Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 1 of 73
Engineering Design Basis
(Civil, Structure & Architecture)
ENGINEERING DESIGN BASIS
(CIVIL, STRUCTURE & ARCHITECTURE)
JOB NO
:
B285
PROJECT
:
MONGOL REFINERY PROJECT
OWNER
:
MONGOL REFINERY STATE OWNED LLC
EIL SIGNATURE
OWNER SIGNATURE
CONTENTS
3
13.04.2022
Revised and Issued For Bids
VS/ TS
RKS/AK/ RG
SKN/ AS
2
04.01.2021
Revised and Issued For Bids
RR/ AK / TS
RKS / PM / RG/ AK
AS
1
29.07.2020
Revised and Issued For Bids
RR/ AK / TS
RKS / PM / RG/ AK
AS
0
25.09.2019
Issued for Client’s Approval
NS/ AK / SS
RKS / PM / RG/ AK
RS
C
16.09.2019
Revised and Re-issued Issued For Bids
NS/ AK / SS
RKS / PM / RG/ AK
RS
B
09.08.2019
Issued For Bids
NS/ AK / SS
RKS / PM / RG/ AK
RS
A
19.07.2019
Issued For Owner’s Comments/Approval
NS/ AK / SS
RKS / PM / RG/ AK
RS
Rev no.
Date
Purpose
Prepared by
Reviewed by
Approved by
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Engineering Design Basis
(Civil, Structure & Architecture)
Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 2 of 73
PART-A
(CIVIL)
A.1.0
SCOPE .............................................................................................................................................4
A.2.0
ABBREVIATIONS, CODES & STANDARDS/ PUBLICATIONS ....................................................4
A.2.1
ABBREVIATIONS .........................................................................................................................4
A.2.2
CODES & STANDARDS/ PUBLICATIONS ..................................................................................4
A.3.0
DESIGN DATA .................................................................................................................................4
A.3.1
METEOROLOGICAL DESIGN DATA ..........................................................................................4
A.4.0
CIVIL DESIGN CONSIDERATIONS ................................................................................................5
A.4.1
SITE GRADING ............................................................................................................................5
A.4.2
ROADS .........................................................................................................................................5
A.4.3
RCC PAVEMENTS .......................................................................................................................6
A.4.4
SITE FINISH .................................................................................................................................6
A.4.5
STORM WATER DRAINAGE .......................................................................................................6
A.4.6
WATER SYSTEM .........................................................................................................................7
A.4.7
FIRE WATER PIPING ..................................................................................................................7
A.4.8
PROCESS SEWERS ...................................................................................................................7
A.4.9
STORAGE TANK SAND PAD FOUNDATION & DYKE WALLS ...............................................10
A.4.10
FENCING/ COMPOUND WALL .................................................................................................10
PART-B
(STRUCTURAL)
B.1.0
B.2.0
B.2.1
B.2.2
B.3.0
B.3.1
B.3.2
B.3.3
B.4.0
B.4.1
B.4.2
B.4.3
B.4.4
SCOPE ...........................................................................................................................................12
ABBREVIATIONS, CODES & STANDARDS / PUBLICATIONS ................................................12
ABBREVIATIONS .......................................................................................................................12
CODES & STANDARDS / PUBLICATIONS ...............................................................................12
GENERAL / DESIGN CONSIDERATIONS ...................................................................................16
MATERIAL OF CONSTRUCTION..............................................................................................16
LOADS........................................................................................................................................17
FLOORING DETAILS FOR BUILDINGS & SHEDS ...................................................................21
SPECIFIC DESIGN CONSIDERATIONS.......................................................................................22
FOUNDATION DESIGN .............................................................................................................22
RCC STRUCTURES & FOUNDATIONS ...................................................................................24
STEEL STRUCTURES ..............................................................................................................27
MASONRY WORKS ...................................................................................................................30
PART-C
(ARCHITECTURAL)
C.1.0
C.2.0
C.3.0
C.4.0
C.5.0
C.6.0
C.7.0
C.8.0
C.9.0
C.10.0
C.11.0
C.12.0
C.13.0
C.14.0
C.15.0
SCOPE ...........................................................................................................................................32
DEFINITIONS .................................................................................................................................32
ABBREVIATIONS ..........................................................................................................................32
BUILDING CODE AND REGULATORY AUTHORITIES ..............................................................32
INDUSTRY STANDARDS..............................................................................................................34
DESIGN CRITERIA ........................................................................................................................34
HEALTH, SAFETY AND ENVIRONMENTAL REQUIREMENTS .................................................35
SITE PLANNING & LANDSCAPING .............................................................................................36
BUILDING REQUIREMENTS ........................................................................................................37
BUILDING ELEMENTS..................................................................................................................45
SPECIFIC DESIGN REQUIRMENTS ............................................................................................58
STRUCTURAL AND CONSTRUCTION ELEMENTS ...................................................................59
BUILDING DESCRIPTION.............................................................................................................60
BUILDING CONSTRUCTION .......................................................................................................73
BUILDING FINISHING MATERIAL ...............................................................................................73
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Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 3 of 73
PART-A
(CIVIL)
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Document No.
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Rev No. 3
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A.1.0 SCOPE
This document covers engineering design basis for Civil works such as compound wall, fencing, site
grading, roads, pavements, storm water drainage, water supply, waste collection & disposal system,
tank farm dyke, tank foundations, etc.
Order of Precedence:
i)
ii)
iii)
iv)
Statutory Provisions
P&IDs
Engineering Design Basis
MNS/ BS/ API recommended Practices/ NFPA Standards
A.2.0 ABBREVIATIONS, CODES & STANDARDS/ PUBLICATIONS
A.2.1 ABBREVIATIONS
Code
Description
ASTM
American Society for Testing and Materials
AASHTO
American Association of State Highway & Transport Officials
ABD
Amine Blow Down
ACI
American Concrete Institute
API
American Petroleum Institute
BS
British Standards
CBD
Closed Blow Down
CBR
California Bearing Ration
CRWS
Contaminated Rain Water Sewer
CTB
Cement Treated Sub-base
FGL
Finished Ground Level
HFL
High Flood Level
HPP
Highest Pavement Point
MNS
Mongolia’s National Standards
MSA
Million Standard Axle
MSL
Mean Sea Level
NFPA
National Fire Protection Association
OWS
Oily Water Sewer
PCC
Plain Cement Concrete
PMS
Piping Material Specification
RCC
Reinforced Cement Concrete
STP
Sewage Treatment Plant
WBM
Water Bound Macadam
A.2.2
CODES & STANDARDS/ PUBLICATIONS
S. No.
Description
Standards/ Codes
1
CIVIL WORKS
1.1
Codes for Various civil works
MNS/ BS/ EURO/ ACI
1.2
Codes for roads
AASTHO
2
Process Licensors requirement, if any
Note: Where MNS/ BS/ Euro/ ACI codes are not available, any other suitable Indian code/ EIL guidelines
shall be referred.
A.3.0 DESIGN DATA
A.3.1 METEOROLOGICAL DESIGN DATA
Refer Process BEDP
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Engineering Design Basis
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A.3.1.1 ADDITIONAL METEOROLOGICAL DESIGN DATA
S. No.
Project Philosophy
i.
Design Rainfall Intensity – 25 mm/hr.
A.4.0 CIVIL DESIGN CONSIDERATIONS
A.4.1 SITE GRADING
A.
All the tree roots and vegetation shall be grubbed up and removed from site.
B.
The grading of the area shall be done by cutting and filling with the following:
i.
Cutting area: Thoroughly rolled and compacted.
ii.
Filling area: Compacted in layers not exceeding 30 cm in loose thickness to achieve
minimum 90% of Standard Proctor density as per ASTM D698.
C.
HFL: Not Applicable since the area is not prone to flooding.
D.
Plant FGL: 945 m to 955 m above MSL
E.
Unit HPP: (0.3m-0.5m) above FGL
F.
Slope in Graded Areas:
i.
General Site Grading
1:1000 to 1:1500
ii.
During micro grading after completion of major 1 in 200 to 1 in 500
construction (for road corridors)
iii.
Tank farms
1 in 100 to 1 in 500
A.4.2 ROADS
S. No. Description
A.
Road width
Type
&
Project Philosophy
Location
Main roads for
product movement
Road around unit
and its primary
access
Roads for high lift
crane
Approach Roads for
units/ utilities
Roads around tank
farm
Footpath
B.
C.
D.
E.
F.
G.
Camber
Radius of curve
Design CBR
Design Standard
Road finish
Finished road top
level above FGL
Road
way
9m
Carriag
e way
7m
9m
7m
Type of Road
Flexible with Asphalt concrete
Surfacing
Flexible with Asphalt concrete
Surfacing
As per requirement
7m
7m
7.5m
5.5m
1m
1m
Flexible with Asphalt concrete
Surfacing, Road Berm not
envisaged for approach roads
Flexible with Asphalt concrete
Surfacing
Pre-cast interlocking concrete
paver blocks as per ASTM
C936M
1 in 40
12.0 m for 7.5m & 9.0m wide road&8.0 m for 6.0m wide road
As per Geotechnical Recommendation
AASTHO (using 2msa & design CBR)
Asphalt concrete surfacing(Bitumen Grade 100/130 OR Equivalent)
S. No.
Description
Project Philosophy
TemplateNo.5-0000-0001-T2 Rev.1
i.
When pipe way bridges
for pipe sleepers/ track
are provided
Raised locally as per Pipe way bridge
crossing requirement
ii.
Roads around Process
units
Road level around hazardous area
shall be decided such that no roads
are classified.
iii.
Other areas
0.4m to 0.6m above FGL
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Engineering Design Basis
(Civil, Structure & Architecture)
A.4.3 RCC PAVEMENTS
S. No. Description
Pavement slope
A.
Type
B.
i. Vehicular movement area
ii. Non-vehicular movement areas
a. Unit/ Utility
b. Offsite pump station
c. LPG Bullet area
iii. Truck loading/ unloading gantry
Grade of Concrete
C.
Sub-grade preparation
D.
A.4.4 SITE FINISH
S. No.
Area
Project Philosophy
1 in 100
RCC (Maximum 12.0 Ton Single Axle Load)
RCC (Maximum 6.0 Ton Single Axle Load)
RCC (No load is expected)
RCC (No load is expected)
RCC
C 30/ 37
Sub-grade below RCC pavement shall be
provided as per Geotechnical Recommendation.
Finish
E.
Units/ Utility
RCC
F.
Tank farm
PCCC20 with HDPE film lining
G.
Between unit & roads
Compacted earth
H.
Parking
Pre-cast interlocking paver blocks
I.
Truck loading / unloading area
RCC
J.
Railway gantry area
RCC
K.
Pipe ways
Compacted earth
L.
Open storage (Temporary)
WBM
A.4.5 STORM WATER DRAINAGE
A.4.5.1. Run off co-efficient
S.No.
Type of area
i.
Paved area
i.
Plain/ Reinforced Concrete
ii.
Asphalt concrete
ii.
Compacted area such as offsites
iii.
Unusable open area/ Green Belt area
Run off co-efficient
1.0
0.9
0.7
0.4
A.4.5.2 Storm water drainage system
Type
Rectangular Drain
Material
Cement concrete block with 1:4 (Cement: Sand) mortar, upto 1.0m. depth;
RCC, for drain depth more than 1.0m.
A.4.5.3 Culverts and Road Crossings
S. No. Description
i.
Storm Water culverts under roads/ railway
Philosophy
RCC Box culverts
A.4.5.4 Oil Catcher
Oil catcher shall be provided before discharging storm water into Storm water pond outside refinery complex.
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A.4.6 WATER SYSTEM
A.4.6.1 Raw Water:
i.
Storage
 Type
RCC
 Capacity
As perProcess
ii.
Treatment
As per Process
iii.
For further details of Raw water system i.e. Bore pump station, pipeline etc, refer Design Basis of
Raw water system
A.4.6.2 Drinking Water System:
i.
Rate of water supply
ii.
System
iii.
iv.
Disinfection Method
Storage
A.4.7
-
30 gals/head/day (135 liters per capita per day) (lpcd)
Insulated Above ground ring main with Galvanized Iron
pipes and fittings as per PMS
By Process
In Raw Water treatment plant
FIRE WATER PIPING
The fire water headers of main network shall be laid on sleepers 500mm above FGL, independent of
process lines near to road side. At road crossings/ area where above ground piping may cause
hindrance in movement, it shall be laid in RCC trench with heavy duty Precast cover. . All firewater
headers in RCC paved areas shall be laid directly buried with sand filling all around with removable
pre- cast cover and sealing of joints. Pipes shall be laid on 150mm thick sand bed. Winterisation of
the Fire water piping shall be done as per winterization philosophy.
A.4.8 PROCESS SEWERS
A.4.8.1 General
S. No. Philosophy
i.
Storm water sewer shall not be combined with oily water drains. However within the paved
area of the unit where rain water is likely to get contaminated with oil, the same shall be
discharged in the CRWS.
ii.
OWS/ CRWS from within process unit and tank farm area shall be collected in pits/sumps and
subsequently pumped to EFFLUENT TREATMENT PLANT (ETP).
iii.
Process Unit Area: It is expected that floor wash of identified equipment area of process units
shall have accidental oil contamination. The floor wash of contaminated area shall be collected
through a network of catch basin and pipes of CRWS/ OWS. The same shall be sent to the
offsite OWS/ CRWS network through a battery limit valve.
RCC drain with HDG (Hot Dipped Galvanized) grating shall be provided all around the unit
pavement to collect non-contaminated water. This drain shall be connected to main plant drain.
iv.
a) Multiple OWS/ CRWS pits shall be provided in offsites for a cluster of units. The OWS/
CRWS collected in the pits shall be pumped to ETP for treatment.
b) The clean water/ uncontaminated water collected in the OWS/ CRWS pit shall be
discharged to the storm water drain through an arrangement of dual baffle wall. The OWS/
CRWS pit shall be sized for a holdup capacity of 15 minutes of CRWS and OWS (as per
process requirement).
c) Rotary Lobe pumps with floating suction shall be provided in the pit to ensure earliest
removal of Floating oil.
v.
Tank farm Area drainage shall be provided in such a way that the storm water discharge shall
be either sent to storm water sewer or to the oily water sewer (OWS) by providing triple valve
pit outside the dyke wall depending on its contamination. The contaminated rain water
discharge from tank farm shall be a released through gravity sewer at controlled rate to OWS
by operating the valve system.
vi.
All underground Carbon Steel pipes shall be provided with corrosion resistance protection as
per specificationfor Shop & Field painting.
vii.
Corrosion resistant protection given to underground Carbon Steel pipe shall extend up to
minimum 500 mm above/ beyond grade.
viii.
Transformer oil shall be drained to RCC pit as per electrical Design Basis/ requirement.
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Engineering Design Basis
(Civil, Structure & Architecture)
A.4.8.2 Types of Sewers and Disposal Method
S. No.
Type of Sewer
Disposal
i.
Oily sewer
To ETP
ii.
Acidic and Alkali
As per Process
iii.
Chemical Sewer/ CBD/ ABD
As per Process
iv.
Sanitary Sewer
To STP
A.4.8.3 Design & Other Criteria
S. No.
Project Philosophy
i.
ii.
iii.
iv.
The contaminated rain water and Oily Water Sewer shall be collected to a common sump
and pumped to ETP.
Design of Oily Water Sewer shall be based on the quantities of process waste specified by
process department/Licensor.
Design of contaminated rain water Sewer/ Oily water sewer shall be for the greater of
following combinations:
- Contaminated rain water + OWS, or
- Fire water + OWS,
The quantities of contaminated rain water shall be worked out based on the contaminated
process area in the unit block.
Sanitary sewer shall be designed for 3 times the average flow flowing half full, in case of
lateral sewer and flowing 2/3 full in case of Main Sewers.
A.4.8.4 Cover for Sewer Line
S. No. Project Philosophy
i.
Minimum cover over sewer line in offsite & unit shall be as per winterization philosophy.
ii.
For sewer lines connecting from above-ground to the under-ground, pipe shall be protected from
freezing as per Process design/winterization philosophy.
A.4.8.5 Material of Construction for Manholes
S. No. Description
Project Philosophy
i.
Oily water sewer & contaminated rain water sewer (In unit areas)
RCC leak resistant
ii.
Oily water sewer & contaminated rain water sewer (In Offsite areas)
RCC leak resistant
iii.
Sanitary Sewer
RCC
A.4.8.6 Manhole Seal & Lining
S. No. Project Philosophy
i.
ii.
For trapping of gas or prevention of spread of fire through sewer from one area to another, a liquid
seal of minimum 150 mm shall be provided in Manholes. Location of sealed manholes shall be
decided accordingly.
Manhole for acid/alkali sewer shall be provided with Acid/Alkali proof lining.
iii.
Sealed Manholes shall be provided at the following locations:
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a) In unit oily sewer at battery limit, so that the unit area is cut off from any fire in offsite area or
vice versa.
b) Within the unit area sealed manholes should be provided at locations such that each sub-unit
within the unit is isolated from the other areas. In case this demarcation is difficult, one sealed
manhole for every 25M to 30M length of the main sewer should be provided.
c) At change of direction of the line.
d) At entry of branch line to manhole or mainline.
e) Sealed manhole with bent pipes, seal type, shall be used for CS pipes up to 24 Inch diameter.
For CS pipes greater than 24 Inch diameter, double compartment type sealed manholes shall
be used.
f) All sealed manholes shall have airtight covers and vents.
a) Vents in unit area should be installed on the sealed manholes to maintain atmospheric pressure
in the sewer and to release vapours to safe locations.
b) Vents should be located along pipe rack columns or building columns and shall be taken 3.0m
above the building parapet or last layer of pipes on the pipe rack/ structure within 15 m radius
of the vent.
c) The minimum size of the vent pipe shall be 4 Inch.
d) Vents shall not be combined in any case. For double-compartment manholes also, the vents
shall be provided separately for each compartment.
e) The outlet of vent pipe shall be provided with bird mesh.
Suitable Clean outs shall be provided at the ends and at the change of direction of branch headers
(where manhole is not provided) for cleaning of sewers as and when required.
a) Vents in offsite should be installed on the sealed manholes to maintain atmospheric pressure
in the sewer and to release vapours to safe locations.
b) Vents should be located along pipe rack columns or building columns and should be taken 3.0m
above the building parapet or last layer of pipes on the pipe rack/ structure.
c) The minimum size of the vent pipe shall be 4 Inch.
d) Vents shall not be combined in any case. For double-compartment manholes also, the vents
shall be provided separately for each compartment.
e) In case there is no building/ tech-structure/ pip-rack within 15.0m radius, the vent shall be
located 3.0m above the manhole with flame arrestor.
To protect liquid from freezing inside manholes/ catch basins, suitable arrangement shall be
provided for freeze protection as per Process Design/ winterization philosophy.
iv.
v.
vi.
vii.
A.4.8.7 Material of Construction for Sewers
S. No. Description
i.
Project Philosophy
Oily Sewer
a.
b.
Within process units
tankage areas
Offsite gravity sewer
c.
Offsite pressure main
Carbon Steel Pipes as per PMS
d.
Chemical Sewer
As per Process requirement
ii.
and
hydrocarbon
Carbon Steel Pipes as per PMS
Carbon Steel Pipes as per PMS
Sanitary Sewer
a.
Toilet block upto Inspection chamber
CI Pipes
b.
Gravity main & lateral
RCC Pipes
c.
Pressure main
CI Pipes
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A.4.9 STORAGE TANK SAND PAD FOUNDATION & DYKE WALLS
S. No. Description
Project Philosophy
i.
Sand Pad Tank Foundation
As per Geotechnical Recommendation
ii.
Storage Tank Dyke Walls
RCC
iii.
Fire Walls
Solid cement concrete block masonry in 1: 4
Cement mortar ( 1 cement :4 sand)
A.4.10 FENCING/ COMPOUND WALL
S. No. Description
Project Philosophy
i.
Protection of Land Acquisition Limit
By Client
ii.
Material of construction for Compound Wall
By Client
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PART-B
(STRUCTURAL)
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Engineering Design Basis
(Civil, Structure & Architecture)
B.1.0
SCOPE
This document specifies the design criteria and loads that shall be taken into account for the civilstructural design of all industrial plant and non-plant structures and buildings pertaining to the project.
B.2.0
ABBREVIATIONS, CODES & STANDARDS / PUBLICATIONS
B.2.1
ABBREVIATIONS
Code
EDB
FFL
FGL
FOS
HPP
MOC
NA
PCC
RCC
RRA
SBC
TMT
UOM
B.2.2
Description
Engineering Design Basis
Finished Floor Level
Finished Grade Level
Factor Of Safety
High Point Of Pavement
Material Of Construction
Not Applicable
Plain Cement Concrete
Reinforced Cement Concrete
Rapid Risk Analysis
Safe Bearing Capacity
Thermo-Mechanically Treated
Unit Of Measurement
CODES & STANDARDS / PUBLICATIONS
S. No. Description
BRITISH STANDARDS
1
Carbon Steel Bars for the Reinforcement of Concrete
2
Specification for Steel Fabric for the Reinforcement of Concrete.
3
Industrial Type Metal Flooring, Walkways and Stair Treads.
4
Holding Down Bolts.
5
Concrete: Complementary British Standard to BS EN 206
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Standards/Codes
BS 4449
BS 4483
BS 4592
BS 7419
BS 8500
EURO CODES
Cement. Composition, specifications and conformity criteria for common
cements
Concrete. Specification, performance, production and conformity
Specification for masonry units
Tests for general properties of aggregates
Admixtures for concrete, mortar and grout. Common requirements
Mixing water for concrete. Specification for sampling, testing and
assessing the suitability of water, as mixing water for concrete.
Welding. Recommendations for welding of metallic materials
Eurocode 0: Basis of structural design
Eurocode 1: Action on structures-Part 1-1: General actions-Densities,
self-weight and imposed loads
Eurocode 1: Action on structures-Part 1-2: General actions-Actions on
structures exposed to fire.
Eurocode 1: Action on structures-Part 1-3: General actions-Snow loads
Eurocode 1: Action on structures-Part 1-4: General actions-Wind actions.
Eurocode 1: Action on structures-Part 1-5: General actions-Thermal
actions.
Eurocode 1: Action on structures-Part 1-6: General actions-Actions
during execution.
Eurocode 1: Action on structures-Part 1-7: General actions-Accidental
actions.
S. No. Description
TemplateNo.5-0000-0001-T2 Rev.1
BS EN 197
BS EN 206
BS EN 771
BS EN 932
BS EN 934
BS EN 1008
BS EN 1011
BS EN 1990
BS EN 1991-1-1
BS EN 1991-1-2
BS EN 1991-1-3
BS EN 1991-1-4
BS EN 1991-1-5
BS EN 1991-1-6
BS EN 1991-1-7
Standards/Codes
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21
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Page 13 of 73
Eurocode 1: Action on structures-Part 2: Traffic loads on bridges
Eurocode 1: Action on structures-Part 3: Actions induced by cranes and
22
machinery.
23
Eurocode 1: Action on structures-Part 4: Silos and Tanks
Eurocode 2: Design of Concrete structures-Part-1-1: General-Common
24
rules for buildings
Eurocode 2: Design of Concrete structures-Part-1-2: General-Structural
25
fire design
Eurocode 2: Design of Concrete structures-Part-1-3: General-Precast
26
concrete elements and structures
Eurocode 2: Design of Concrete structures-Part-1-4: General-Light
27
weight aggregate concrete with closed structure
Eurocode 2: Design of Concrete structures-Part-1-5: General-Structures
28
with unbonded and external prestressing tendons
Eurocode 2: Design of Concrete structures-Part-1-6: General-Plain
29
concrete structures
Eurocode 2: Design of Concrete structures-Part-2: Reinforced and
30
prestressed concrete Bridges - Design and detailing rules
Eurocode 2: Design of Concrete structures-Part-3: Liquid retaining and
31
containment structures.
Eurocode 3: Design of Steel structures-Part-1-1: General rules and rules
32
for buildings.
Eurocode 3: Design of Steel structures-Part-1-2: General rules33
Structural fire design.
Eurocode 3: Design of Steel structures-Part-1-3: General rules -Cold
34
formed thin gauge members and sheeting.
Eurocode 3: Design of Steel structures-Part-1-5: General rules -Plated
35
structural elements
Eurocode 3: Design of Steel structures-Part-1-6: General rules -Strength
36
and stability of shell structures
Eurocode 3: Design of Steel structures-Part-1-7: General rules-Design
37
values for plated structures subjected to out of plane loading.
Eurocode 3: Design of Steel structures-Part-1-8: General rules-Design of
38
joints.
39
Eurocode 3: Design of Steel structures-Part-1-8: General rules-Fatigue
Eurocode 3: Design of Steel structures-Part-1-10: General rules-Material
40
toughness and through thickness properties
Eurocode 3: Design of Steel structures-Part-1-11: General rules-Design
41
of structures with tension components
Eurocode 3: Design of Steel structures-Part-1-12: General rules42
Supplementary rules for high strength steels.
43
Eurocode 3: Design of Steel structures-Part-2-1: Steel Bridges
Eurocode 3: Design of Steel structures-Part-3-1: Tower, masts and
44
chimneys-Tower and masts
Eurocode 3: Design of Steel structures-Part-3-2: Tower, masts and
45
chimneys-Chimneys
46
Eurocode 3: Design of steel structures - Part 4-1: Silos
47
Eurocode 3: Design of steel structures - Part 4-2: Tanks
48
Eurocode 3: Design of steel structures - Part 4-3: Pipelines
49
Eurocode 3: Design of steel structures - Part 5: Piling
Eurocode 3: Design of steel structures - Part 6: Crane supporting
50
structures
Eurocode 6: Design of masonry structures - Part 1-1:
51
General rules for reinforced and unreinforced masonry structures
Eurocode 6: Design of masonry structures - Part 1-2:
52
General rules - Structural fire design
Eurocode 6: Design of masonry structures - Part 2:
53
Design considerations, selection of materials and execution of masonry
Eurocode 6: Design of masonry structures - Part 3:
54
Simplified calculation methods for unreinforced masonry structures
S. No. Description
TemplateNo.5-0000-0001-T2 Rev.1
BS EN-1991-2
BS EN-1991-3
BS EN-1991-4
BS EN-1992-1-1
BS EN-1992-1-2
BS EN-1992-1-3
BS EN-1992-1-4
BS EN-1992-1-5
BS EN-1992-1-6
BS EN-1992-2
BS EN-1992-3
BS EN-1993-1-1
BS EN-1993-1-2
BS EN-1993-1-3
BS EN-1993-1-5
BS EN-1993-1-6
BS EN-1993-1-7
BS EN-1993-1-8
BS EN-1993-1-9
BS EN-1993-1-10
BS EN-1993-1-11
BS EN-1993-1-12
BS EN-1993-2
BS EN-1993-3-1
BS EN-1993-3-2
BS EN-1993-4-1
BS EN 1993-4-2
BS EN 1993-4-3
BS EN 1993-5
BS EN 1993-6
BS EN 1996-1-1
BS EN 1996-1-2
BS EN 1996-2
BS EN 1996-3
Standards/Codes
Copyrights EIL– All rights reserved
Engineering Design Basis
(Civil, Structure & Architecture)
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
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Eurocode 7 :Geotechnical design-Part 1:General rules
Eurocode 7 :Geotechnical design-Part 2: Ground investigation and
testing
Eurocode 8: Design of structures for earthquake resistance- Part 1:
General rules seismic actions and rules for buildings.
Eurocode 8: Design of structures for earthquake resistance- Part 2:
Bridges
Eurocode 8: Design of structures for earthquake resistance - Part 3:
Assessment and retrofitting of buildings
Eurocode 8: Design of structures for earthquake resistance- Part 4:
Silos, tanks and pipelines
Eurocode 8: Design of structures for earthquake resistance -Part 5:
Foundations, retaining structures and geotechnical aspects
Eurocode 8: Design of structures for earthquake resistance - Part 6:
Towers, masts and chimneys
Steel for the reinforcement of concrete. Weldable reinforcing steel.
General.
Aggregates for concrete
Free-standing chimney- General requirements
Welding consumables. General product standard for filler metals and
fluxes for fusion welding of metallic materials.
BS EN 1997-1
Welding consumables. Covered electrodes for manual metal arc welding
of non-alloy and fine grain steels. Classification
Fasteners. Hot dip galvanized coatings.
ISO general purpose metric screw threads. Tolerances. Limits of sizes
for internal screw threads to mate with hot-dip galvanized external screw
threads with maximum size of tolerance position h before galvanizing
BS EN ISO 2560
ASTM (American Society for Testing and Materials):
Standard Specification for Structural Steel
Standard Specification for Pipe, Steel, Black and Hot-Dipped Zinc71
Coated Welded and Seamless
Specification for Zinc (Hot-Dip Galvanized) coatings on Iron &
72
Steel products.
Standard Specification for Welded Steel Wire Fabric, Plain, for
73
Concrete Reinforcement.
Standard Specification for Alloy-Steel and Stainless Steel Bolting
74
Material for High Temperature or High Pressure Service and Other
Special Purpose Applications
Carbon & Alloy Steel nuts for Bolts of High Pressure & High Temp.
75
service.
Standard Specification for Carbon Steel Bolts and Studs, 60,000 psi
76
Tensile Strength
Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105
77
ksi Minimum Tensile Strength
Standard Specification for Heat Treated Steel Structural Bolts, 150 ksi
78
Minimum Tensile Strength
Standard Specification for Cold-Formed Welded and Seamless Carbon
79
Steel Structural Tubing in Rounds and Shapes
80
Standard Specification for Carbon and Alloy Steel Nuts
Standard Specification for Steel, Carbon (0.15 Maximum, Percent), Hot81
Rolled Sheet and Strip Commercial Quality
Standard Specification for Deformed and Plain Billet-Steel Bars for
82
Concrete Reinforcement
83
Standard Specification for Epoxy-Coated Reinforcing Steel Bars
84
Standard Specification for Rolled Steel Floor Plates
85
Standard Specification for Rapid Hardening Hydraulic Cement.
86
Standard Specification for Air-Entraining Admixtures for Concrete
87
Standard Specification for Hardened Steel Washers
S. No. Description
70
TemplateNo.5-0000-0001-T2 Rev.1
BS EN 1997-2
BS EN 1998-1
BS EN 1998-2
BS EN 1998-3
BS EN 1998-4
BS EN 1998-5
BS EN 1998-6
BS EN 10080
BS EN 12620
BS EN 13084
BS EN 13479
BS EN ISO 10684
BS ISO 965
A36
A53
A123
A185
A193
A194
A307
A325
A490
A500
A563
A569
A615
A775
A786
C1600
C260
F436
Standards/Codes
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Page 15 of 73
88
AASHTO (American Association of State Highway and Transportation
Officials):
Standard Specification for Highway Bridges
89
90
91
ACI (American Concrete Institute):
Building Code Requirements for Structural Concrete With Commentary
Foundations for Dynamic Equipment
Guide to Cold Weather Concreting
ACI 318M
ACI 351.3
ACI 306
AISC (American Institute of Steel Construction):
The AISC Manual of Steel Construction.
The AISC Specification for the Design, Fabrication and Erection
Structural for Steel Buildings
The AISC Code of Standard Practice for Steel Buildings and Bridges
The AISC Specification for Structural Joints Using ASTM A325 or A490
Bolts
92
93
94
95
96
97
API (American Petroleum Institute):
Welded Steel Tanks for Oil Storage (Seismic Design)
Fireproofing practices in Petroleum and Petrochemical Processing Plants
API 650
API 2218
98
ASCE (American Society of Civil Engineers):
Minimum Design Loads for Buildings and Other Structures
ASCE 7
99
ASNT (American Society for Nondestructive Testing):
Recommended Practice
SNT-TC-1A
100
101
AWS (American Welding Society):
Structural Welding Code
Structural Welding Code - Reinforcing Steel
AWS D1.1
AWS D1.4
BCSA (British Constructional Steel Work Association)
PIP Guidelines (Process Industry Practice)
Note: The above list is suggestive and not exhaustive. Apart from these basic codes any other related
code shall also be followed wherever required. All codes & standards shall be latest revision with all
amendments issued there to.
Order of Preference of applicable Codes shall generally be as follows;
1. British Standard Euro (BS EN) Codes
2. American Codes
3. Any other relevant Codes/Practices
However Codes providing comprehensive guidelines shall be adopted.
TemplateNo.5-0000-0001-T2 Rev.1
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Engineering Design Basis
(Civil, Structure & Architecture)
B.3.0
GENERAL / DESIGN CONSIDERATIONS
B.3.1
MATERIAL OF CONSTRUCTION
S. No.
1.0
1.1
1.2
Name of
Structure
Technological
structures
Supporting
process
equipments,
with air coolers
Supporting
process
equipments,
without air coolers
2.0
Pipe Rack
2.1
Inside
process
unit (without air
cooler)
2.2
2.3
3.0
4.0
Inside
process
unit (with air
cooler)
Offsite area
All Shed type
structures
e.g.
compressor house,
pump house etc.
All plant & nonplant
buildings,
including
blastresistant
buildings
TemplateNo.5-0000-0001-T2 Rev.1
Material of
Construction
Level up to
RCC
0.3m above
HPP
Steel
Above
portion
RCC
0.3m above
HPP
Steel
Above
portion
RCC
Up to 0.3m above
HPP.
Steel
Above
portion
RCC
Up to 0.3m above
HPP.
Steel
Above
portion
RCC
Fire Proofing
up to
Remarks
NA
RCC
Air
cooler
up to top supporting
level. Refer
note-f.
For
blind
floor MOC,
Refer Note-a
NA
RCC
As per API
up to top 2218 or
9.1m above
HPP,
whichever is
higher. Refer
note-f.
NA
RCC
As per API 2218
up to top or 9.1m above
HPP, whichever
is higher. (Refer
note-f)
NA
For blind floor
MOC, refer
Note-a
RCC
Air
cooler
up to top supporting
level. (Refer
note-f)
Up to 0.5m above NA
HPP.
Steel
Above RCC
portionup to top
NA
RCC
Up to 0.3m above
HPP.
NA
Steel
Above
portion
NA
RCC/Steel
Top
RCC
up to top
NA
Ref. Note-b
Ref. Note-c
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Engineering Design Basis
(Civil, Structure & Architecture)
5.0
All
enabling
buildings
e.g.
Warehouse,
cement godown
etc.
6.0
Cable trenches
RCC/Steel
Top
NA
RCC (Precast/
Cast in-situ) /
Bricks)
NA
NA
Ref. Note-d
Notes:
a) Blind floor, to be provided below all air coolers, shall be in RCC over metal decking (left-in/
sacrificial shuttering) or chequered plates with screed.
b) Roofing & side cladding shall be as per Engineering Design Basis Part- C (Architecture).
c) Buildings shall have RCC floors & masonry infill walls, however blast-resistant buildings shall
have RCC walls. Material of construction of masonry shall be as per Engineering Design Basis
Part- C (Architecture).
d) Material of construction for buildings shall be as per Engineering Design Basis Part- C
(Architecture).
e) Electro-forged galvanized grating shall be used for flooring at all operating floors, unless RCC
floor is required from operations considerations (e.g. floors in plant & non-plant buildings, blind
floor below air coolers supported on technological structure & pipe rack), however chequered
plate shall be provided for walkway along crane girders.
f)
Fire-proofing material for steel structures wherever required, shall be as follows:
i) Concrete for structures supporting transfer line & two phase flow line above 6" diameter.
ii) Vermiculite based fire proofing system for all other structures, however fire-proofing up to
minimum 1.8 m from HPP shall be in concrete.
Fire proofing material shall has a proven track record, demonstrating high durability under special
climates such as sub-arctic and arctic etc., without defects or need of excessive maintenance.
B.3.2
LOADS
B.3.2.1 DEAD LOADS
The weight of all permanent construction, including foundation, walls, floors, roofs, partitions, fireproofing, stairways and fixed service and other equipments including all fixtures, platforms, ladders
and attached piping, but excluding their content, shall be considered as Dead Loads. If piping weight
is not indicated separately or not included in the weight of the equipment, the same shall be taken as
10% of operating weight of the equipment. Component of soil backfill weight over foundation slab
shall be considered as foundation dead load.
The unit weight of materials in general, should be in accordance with BS EN 1991-1-1.
B.3.2.2 IMPOSED LOADS
Following may be considered under Imposed Loads:
B.3.2.2.1 LIVE LOADS
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Live loads shall, in general, be as per BS EN 1991-1-1. However, the following minimum live loads
shall be considered in the design of structures to account for maintenance and erection as well:
S. No.
1.0
1.1
1.2
2.0
2.1
2.2
Title/Description
Process Building/ Technological
Structure (open/ closed)
Operating area
Maintenance area
Compressor House/ TG house
Operating area
Value
UOM
5.0
7.5
kN/sqm
kN/sqm
7.5
kN/sqm
7.5
kN/sqm
Maintenance area
Remarks
(or as specified by
machine vendor)
3.0
3.1
3.2
3.3
3.4
4.0
4.1
4.2
5.0
5.1
5.2
5.3
5.4
6.0
6.1
7.0
Platforms
Service platform around/on Vessel/ Tower
3.0
kN/sqm
Isolated platform (for valve operation)
3.0
kN/sqm
Access way
3.0
kN/sqm
Cross over
2.0
kN/sqm
Sub-station/ Control Room floors
Panel floor
10.0
kN/sqm
Light partition
1.0
kN/sqm
Office building
Office area
3.0
kN/sqm
Lobby
5.0
kN/sqm
Exit way
5.0
kN/sqm
Light partition
1.0
kN/sqm
Laboratory
Upper floors
4.0
kN/sqm
Cooling tower
Operating platform/Hot water basin cover
7.1
3.0
kN/sqm
slab
8.0
Staircase
8.1
Process building/ Technological structure
5.0
kN/sqm
8.2
Office
5.0
kN/sqm
8.3
Sub-station/ Control room
5.0
kN/sqm
8.4
Laboratory
3.0
kN/sqm
8.5
Service platforms
2.5
kN/sqm
9.0
Walkway
9.1
Gantry girder
3.0
kN/sqm
Note:
a) Live load on various types of roofs shall be as per requirements given in BS EN 1991-1-1.
B.3.2.2.2 HYDRO-TEST LOAD
All equipment foundations & equipment supporting structures shall be designed for Hydro-test loads.
Hydro-test shall be considered for one equipment at a time. Further, under hydro-test condition the
partial wind force shall be taken in line with applicable code recommendations. Seismic forces shall
not be considered while hydro-testing.
B.3.2.2.3 OPERATING LOAD OF EQUIPMENT
Operating loads shall include the maximum designed equipment inventory in the operating cycle of
the plant. For silos, the contents shall be considered as operating loads.
B.3.2.2.4 BUNDLE PULL
S. No.
1.0
Project Philosophy
Bundle pull for different types of Exchangers shall be taken as under unless otherwise
specified in the equipment data sheet:
1.1
For Fixed type, no bundle pull shall be considered.
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1.2
2.0
Document No.
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Page 19 of 73
For all other types, bundle pull load shall be considered to be equal to the bundle weight or
10.0KN, whichever is maximum. If the total weight of the exchanger is less than 10.0 kN, the
bundle pull load shall be taken as the total weight of the exchanger.
Total Bundle Pull shall be considered on fixed pedestal alone.
B.3.2.2.5 PIPING LOAD
All Structures shall be designed for actual piping loads. Actual pipe loads on Pipe rack shall be
calculated for most congested cross-section and considering full utilization of available rack space.
B.3.2.2.6 DYNAMIC/VIBRATORY LOADS
Structures subjected to impact or vibratory loads, e. g. Machine foundations, shall be designed to
satisfy the requirements of ACI 351.3 and any other parameter as specified by the machine
manufacturer.
B.3.2.2.7 MAINTENANCE LOADS
All structures shall be designed for loads generated during erections and maintenance. Temporary
maintenance loads (i.e. bundle pull, etc) and are not to be combined with full wind load or seismic
load.
B.3.2.3 WIND LOAD
Wind loads shall generally be as per BS EN 1991-1-4 except for switch yard structures &
transmission towers for which BS EN 1993 shall be applicable.
Parameters required for calculation of wind speed shall be considered as belowS. No. Title/Description
Value UOM Remarks
1.0
Fundamental value of Basic
38
m/sec Characteristic 10 minutes mean wind
wind Speed, Vb,0
velocity at 10m above ground level in
open terrain (Category II) with return
period of 20 years.
2.0
Terrain Category
I
Note: To account for surface area of piping, platforms and other attachments fixed to the equipment
the surface area of the equipment (vessel/ column) exposed to wind shall be increased by 20% or as
specified in the mechanical data sheet of the equipment.
B.3.2.4 SEISMIC LOAD
Seismic forces shall be based on BS EN 1998 considering following parametersS. No.
1.0
Value
0.04g
UOM
m/s2
Remarks
(with return period of 475 years).
2.0
2.1
Title/Description
Reference peak ground
acceleration agr
Other parameters
Ground Type
C
-NA-
Soil Type and other related factors shall
be verified based on the latest geotechnical report.
2.2
2.3
Soil Factor, S
TB
1.50
0.10
-NA-NA-
2.4
TC
0.25
-NA-
TemplateNo.5-0000-0001-T2 Rev.1
Lower limit of the period of the
constant spectral acceleration
Upper limit of the period of the
constant spectral acceleration
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Engineering Design Basis
(Civil, Structure & Architecture)
2.5
TD
1.2
-NA-
Value defining the beginning of
constant displacement response range
of spectrum
B.3.2.5 BLAST FORCES
S. No.
1.0
Project Philosophy
Structures subjected to blast forces generated due to accidental blasts from hydrocarbon
ignitions shall be designed corresponding to Blast Pressure as recommended in Rapid Risk
Analysis (RRA) report.
In absence of RRA report, blast pressure shall be considered as static overpressure of 3psi
(20.7KN/sqm) or as specified in API 752, whichever is more stringent.
B.3.2.6 SNOW LOAD
Snow load shall be based on BS EN 1991-1-3.
The characteristic value of snow load on the ground sk = 30Kg/m2
B.3.2.7 THERMAL LOAD
Structures and structural elements which are exposed to daily/seasonal temperature or operational
changes shall be design for thermal loads. Thermal loads due to temperature variation shall be
based on BS EN 1991-1-5.
Following characteristic temperatures shall be considered as for thermal designAmbient Winter temperature
: -31.5°C
Minimum Winter temperature
: -35.8°C
Ambient Summer temperature : 39.5°C
Maximum Summer temperature : 42.0°C
The elements of load bearing structures shall be checked to ensure that thermal movement will not
cause overstressing of the structure, either by the provision of movement joints or by including the
effects in the design.
B.3.2.8 OTHER LOADS
S. No.
1.0
Project Philosophy
Apart from the specified live loads, any other equipment load or possible overloading during
construction/erection/hydro-test of equipment or piping/maintenance shall also be considered
in the design.
2.0
Design of all structures shall also consider any other relevant and consequential load/stress
imparted to the structure.
All liquid retaining/storage structures shall be designed assuming liquid up to the full height of
wall irrespective of provision of any overflow arrangement.
Pressure relief valves or similar pressure relieving devices for relieving groundwater pressure
shall not be made in underground water retaining/ storage RCC structures.
Hot water basin in cooling tower shall be designed for the weight of water up to top of parapet
wall.
All buildings/structures shall be designed to resist the worst combination of the above loads (in
accordance with BS EN 1990, BS EN 1991 & BS EN 1998).
3.0
4.0
5.0
6.0
TemplateNo.5-0000-0001-T2 Rev.1
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Engineering Design Basis
(Civil, Structure & Architecture)
B.3.3
FLOORING DETAILS FOR BUILDINGS & SHEDS
S. No.
1.0
1.1
Description
Sub Grade
Earth-fill
base
Compacted to 95%
dry density.
Flooring Type I
Flooring Type II
Flooring Type III
To be provided
To be provided
To be provided
1.2
Compacted layer of
sand over thoroughly
compacted Earth fill
(mm)
200 mm thick
200 mm thick
150 mm thick
2.0
Structural Grade
Slab
2.1
Lean concrete C8/10
over sand layer(mm)
50 mm thick
50 mm thick
50 mm thick
2.2
Structural
nonsuspended slab in
C16/20
Grade
concrete (Reinforced
with 8 mm dia bars @
200c/c both ways)
over lean concrete
150mm thick slab
with reinforcement
placed centrally.
150mm thick slab 100mm thick slab
using Vacuum drying without
Flooring process with reinforcement.
reinforcement placed
in two layers (at top &
bottom)
Note:
a) Flooring details as given above shall be adopted for the non-suspended ground floor slabs for
buildings & sheds only as categorized for various flooring types.
b) Flooring Type I shall be considered for Control Rooms, Satellite Rack Rooms, Sub- Stations,
Pump Houses, Utility Compressor Houses, Parking Areas, Stores, Porches.
c) Flooring Type II shall be considered for Ware Houses, Workshops, Cement Godowns, Fire
Stations, Process Compressor Houses.
d) Flooring Type III shall be considered for Administration, Laboratory, Canteen, Time Office, Gate
House, Training Centre, Guest House, Residential buildings.
e) Floor finish for all the above three types of flooring shall be as per Engineering Design BasisPart-C (Architecture).
f)
Reinforcement steel shall be as per clause 4.2.3 of this document.
g) Expansion gap if provided in the building shall be provided in flooring also.
h) Outdoor pavements shall be as per Engineering Design Basis –Part-A (Civil). However 20 mm
gap to be provided between floor slab and equipment foundation/ column and shall be sealed
using joint sealing compound.
i)
Insulating layer shall be provided below ground floor slabs/ pavement as recommended in
Engineering Design Basis- Part-C (Architecture).
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Engineering Design Basis
(Civil, Structure & Architecture)
B.4.0
SPECIFIC DESIGN CONSIDERATIONS
B.4.1
FOUNDATION DESIGN
B.4.1.1 MINIMUM REQUIREMENTS
S. No. Project Philosophy
1.0
Minimum depth of foundation for all structures/ buildings shall be as per Geotechnical
Recommendations.
2.0
Factors of safety against overturning and sliding shall be as per clause 4.1.2 of this document.
3.0
For stability checks the weight of soil as overburden (soil backfill weight over foundation slab)
shall be as per clause 4.1.2 of this document.
The design ground water level shall be as per the Geotechnical Recommendations
and the hydrostatic pressure shall be adequately accounted for in design.
Allowable Net Safe Bearing Capacity(SBC) of soil for isolated/ raft/ pile/ tank Foundations shall
be based on the settlement criteria for dead plus imposed load conditions, as follows:
For foundations in Unit areas, Utility areas and foundations of Plant buildings, settlement shall
be considered as 25mm.
For foundations of Non-plant buildings, settlement shall be considered as 40mm.
For Raft foundations, settlement shall be considered as 40mm.
For foundation of Cone roof/ Dome roof Storage Tanks, settlement shall be considered as
300mm at edge and differential settlement shall be considered as 1-in-300 along periphery.
4.0
5.0
5.1
5.2
5.3
5.4
5.5
For foundations of Floating roof Storage Tanks, settlement to be considered as 150mm at edge
and differential settlement shall be considered as 1-in-500 along periphery.
6.0
Pile capacities (compression, shear and uplift/tension) shall be per Geotechnical
Recommendations.
For transient loadings, e.g. wind/seismic, SBC(safe bearing capacity) shall be considered
based on shear criteria instead of settlement criteria.
Permissible increase in SBC/Pile capacities (for compression, shear and uplift/ tension) shall
be as per the Geotechnical Recommendations.
7.0
8.0
8.1
Under blast (due to hydrocarbon explosion) load combinations, the SBC of soil shall not exceed
1.5 times allowable static bearing pressure of soil.
8.2
Under blast (due to hydrocarbon explosion) load combinations, Pile capacity shall not exceed
1.5 times the permissible capacity under compression, tension and shear modes.
9.0
Foundation for vibrating equipment shall be kept independent of building floors/ foundations
and other adjacent foundations.
10.0
11.0
Foundation for all tanks shall be of RCC ring wall type.
Frost cushion/insulation (Geospan, Ethafoam, UNIPOL, STYROFOAM etc.) shall be provided
below and all sides of foundations including underground portion of RCC columns/pedestals
as per Geo-technical recommendations.
B.4.1.2 FACTORS OF SAFETY IN FOUNDATION DESIGN
S. No.
Type of
Structure
FOS
OT-W/S
(EL)(i)
FOS OTN-W/S
(EL)(ii)
FOS
OT-W/S
(OL) (iii)
1.0
2.0
3.0
4.0
5.0
All
Structures,
Equipments
in
Units & Offsite
1.5
1.5
Overhead tank
Flood Light Mast
Retaining Wall
Flare supporting
structure
1.5
1.5
1.5
-
TemplateNo.5-0000-0001-T2 Rev.1
FOS OTN-W/S
(OL) (iv)
FOS
SLW/S(v)
FOS SLN-W/S (vi)
1.5
2.0
1.5
1.5
2.0
1.5
1.5
1.5
2.0
-
1.5
1.5
1.5
1.5
1.5
-
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Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 23 of 73
Engineering Design Basis
(Civil, Structure & Architecture)
6.0
Blast-resistant
structure
-
-
1.5
2.0 or 1.2*
1.5
1.5 or 1.2*
7.0
Transmission
Tower/
Switch
Yard Structure
1.5
2.0
1.5
2.0
1.5
1.75
Legend:
i)
ii)
iii)
iv)
v)
vi)
OT-W/S (EL) - FOS against Overturning with Wind/ Seismic in Erection condition.
OT-N-W/S (EL) - FOS against Overturning without Wind/ Seismic in Erection condition.
OT-W/S (OL) - FOS against Overturning with Wind/ Seismic in Operating condition.
OT-N-W/S (OL) - FOS against Overturning without Wind/ Seismic in Operating condition.
SL-W/S - FOS against Sliding with Wind/ Seismic.
SL-N-W/S - FOS against Sliding without Wind/ Seismic.
Note:
a) * with blast pressure.
b) Minimum factor of safety against uplift shall be 1.2 for all structures (in case of sumps, lining
weight shall not be included)
c) Percentage weight of overburden due to soil shall be taken as 50% in Offsites and 100% for Unit
areas & to be considered on projected plan area of footing.
B.4.1.3 ANTI-TERMITE TREATMENT
All offsite and utility plant/ non- plant buildings shall be provided with anti-termite treatment if required
as per site conditions. No anti termite treatment shall be provided inside the unit areas.
B.4.1.4 MINIMUM COVER TO FOUNDATION BOLT/ POCKET
S. No.
1.0
1.1
1.2
1.3
2.0
Project Philosophy
Minimum distance from the centerline of foundation bolt/anchor bolt to edge of pedestal shall
be the maximum of the following:
Clear distance from the edge of the base plate/base frame to the outer edge of the pedestal
shall be minimum 50mm.
Clear distance from the face of pocket to the outer edge of the pedestal shall be 100mm.
Clear distance from the edge of the sleeve or anchor plate to the edge of pedestal shall be
100mm.
The anchorage capacities of anchor bolts in tension and shear shall be worked out based on
the bolt to bolt spacing and the distance between anchor bolt to the edge of concrete. If
required, additional reinforcement around anchor bolts shall be provided in the concrete
pedestal.
B.4.1.5 HEIGHT OF PEDESTAL
S. No.
1.0
Project Philosophy
The minimum projection of pedestals supporting any steel structure column bases shall be 300
mm above the high point of pavement/ finished grade/ finished floor level whichever is higher
for outdoor located pedestals.
2.0
The minimum projection of pedestals supporting any steel structure column bases shall be 150
mm above the high point of pavement/ finished grade/ finished floor level whichever is higher
for indoor located pedestals.
3.0
Offsite pipe rack/ pipe bridge/pipe support pedestals shall be of minimum 500mm height above
FGL.
The maximum projection of pedestals for staircase/ladder shall be 200mm.
4.0
TemplateNo.5-0000-0001-T2 Rev.1
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Engineering Design Basis
(Civil, Structure & Architecture)
Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 24 of 73
B.4.1.6 GROUTING & MINIMUM GROUT THICKNESS
S. No.
1.0
1.1
1.2
2.0
3.0
4.0
Project Philosophy
The thickness of grout shall be as follows:
Minimum 50mm for process columns and vertical vessels having Bolt Centre Diameter (BCD)
more than 3.0m unless otherwise required in equipment datasheet.
Minimum 30mm & maximum 50mm for all other foundations/structures, unless otherwise
required in equipment/ vendor data sheet.
All anchor bolt sleeves/pockets and spaces under column bases, shoe plates etc. shall be
grouted with free flow, non-shrink (premix type) grout with 28 day minimum cube crushing
strength of 40N/mm2.
Ordinary cement sand (1:2) grout shall only be used under the base plates of crossovers, short
pipe supports (not exceeding 1.5 m height) and small operating platforms (not exceeding 2.0m
height) not supporting any equipment.
Grouting requirement for machines and equipments are not covered here. The same shall be
governed by vendor's requirement.
5.0
Grout thickness plus 25 mm chamfering shall be provided beyond base plate. Wherever
necessary, grout holes shall be provided in the base plates.
6.0
Grout material shall be selected considering suitability of application in cold climatic
condition of site.
B.4.2
RCC STRUCTURES & FOUNDATIONS
B.4.2.1 GENERAL/ DESIGN METHODS
S. No.
1.0
2.0
3.0
4.0
Project Philosophy
All RCC buildings, structures, foundations, machine/ equipment foundations, liquid retaining/
storage structures, trenches, pits etc. shall be designed based on BS EN 1992 in general and
other relevant BS EN Codes as applicable.
Limit states design method as per BS EN 1992-1-1 shall be followed in the design unless
otherwise specified elsewhere in this document for special structures.
All RCC structures shall be of frame type construction with appropriate detailing in accordance
with the design assumptions.
Where the specified design depth of ground water table so warrants all underground pits,
tunnels, basements etc. (excluding appurtenances of storm water/effluent collection system,
cable trench, pipe trench) shall be of leak-proof RCC construction using approved make of
water-proofing compounds.
5.0
All liquid retaining/storage RCC structures shall be leak-proof and designed as per BS EN
1992-3 corresponding to the relevant water tightness class.
6.0
The walls and base slabs of liquid retaining/storage structures shall be provided with
reinforcement on both faces for thickness greater than or equal to 150mm. In all liquid retaining
structures, PVC water bars (minimum size 230mm wide x 5mm thick) shall be provided at each
construction joint(horizontal and vertical).
7.0
Water basin and other primary framing members of Cooling towers or similar liquid retaining
structures which remain constantly in contact with water (stored/sprayed) shall be designed as
per requirements of BS EN 1992-3.
B.4.2.2 CONCRETE
S. No.
1.0
Project Philosophy
The minimum Compressive Strength Class of reinforced cement concrete (confirming to the
requirements of EN 206-1) to be used for super-structure & sub-structure shall be C30/37 (as
per BS EN 1992) based on XF3 exposure condition. In case otherwise specified in
Geotechnical Recommendations, higher class shall be followed for sub-structure.
TemplateNo.5-0000-0001-T2 Rev.1
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Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 25 of 73
Engineering Design Basis
(Civil, Structure & Architecture)
1.1
1.2
1.3
2.0
2.1
2.2
2.3
2.4
2.5
2.6
3.0
4.0
From durability considerations the minimum cement content and maximum water-cement ratio
shall be 320 Kg/m3 and 0.50 respectively. However, the maximum cement content should not
exceed the limits required to avoid drying shrinkage in thin sections, early thermal cracking and
the increased risk of damage due to alkali silica reactions.
For durability against freeze and thaw, air entraining admixture shall be added in concrete.
Minimum air entrainment shall be 4%.
Freeze-thaw resistant aggregates shall be used conforming to BS EN 12620 & BS EN 1097.
Generally the use of one of the following type of cements shall be considered:
43 grade Ordinary Portland Cement (OPC) conforming to BS EN-197
Rapid Hardening Portland Cement (RHPC) conforming to BS EN-197
Portland Pozzolana Cement (PPC, calcined based) conforming to BS EN-197
Portland Slag Cement (PSC) conforming to BS EN-197
Sulphate Resistant Portland Cement (SRPC) conforming to BS 4027 or ASTM C150 shall
be used only for Sulphur Pit and Sulphur Yard of Sulphur Unit. (and for all foundations, if
required as per soil recommendation for respective site).
Pozzolona cements shall preferably not be used during cold weather concreting due to slow
rate of strength gain.
Minimum cement content for concrete in foundation shall be as per Geotechnical
recommendations document.
75mm thick lean concrete of grade C8/10 shall be provided under all RCC foundations (except
under base slab of liquid retaining structures).The lean concrete shall extend 50mm beyond
the foundation edges on all sides.
5.0
100mm thick lean concrete of grade C16/20 shall be provided under base slab of liquid
retaining structures. The lean concrete shall extend 75mm beyond the foundation edges on all
sides.
6.0
Plain Cement Concrete (PCC) mud mat of grade C16/20 of minimum 150mm thickness shall
be provided under all masonry wall foundations.
Plain cement concrete of grade C16/20 of minimum 40mm thickness shall be provided as
damp proof course at plinth level of all masonry wall not supported on plinth beams and to be
coated with 2 mm thick bitumen emulsion.
7.0
8.0
9.0
10.0
Crystalline water-proofing compound of approved make shall be mixed with concrete for all
liquid retaining/leak-proof structures, RCC Roof, damp proof course.
Minimum grade of concrete for General Civil work shall be as specified in Engineering Design
Basis–Part-A (Civil).
All necessary precautions recommended for cold weather concreting shall be taken to ensure
proper strength development and durability of concrete.
B.4.2.3 REINFORCEMENT BARS
S. No.
1.0
2.0
3.0
4.0
5.0
5.1
5.2
5.3
5.4
5.5
Project Philosophy
High strength deformed TMT bars of characteristic strength 500N/mm², Grade B500C
conforming to BS 4449 (or equivalent international specification) shall be used as
reinforcement for all structures.
18 gauge black soft annealed SWG wire shall be used for binding of reinforcement bars.
All necessary precautions required for reinforcement bending, straightening, insulation etc.
recommended for cold weather concreting shall be taken to ensure good quality and durable
concrete.
Minimum and maximum bar spacing for foundations, slabs, stirrups for beams, ties for
columns, pedestals, walls etc. should be 100mm and 300mm respectively. Bar spacing
should be provided in multiples of 5mm.
Minimum bar diameter shall be as follows:
Piles: Main Bars
: 12 mm
Piles: Tie Bars
: 8
mm
Major & Minor Foundations
Block Foundations: Main Bars & Tie Bars
Pedestals, Columns: Main Bars
TemplateNo.5-0000-0001-T2 Rev.1
8 mm
: 12 mm
: 12 mm
: 12 mm
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Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 26 of 73
Engineering Design Basis
(Civil, Structure & Architecture)
5.6
5.7
5.8
Pedestals, Columns: Tie Bars
Beams: Main Bars
Beams: Anchor Bars
5.9
5.10
5.11
Beams: Stirrups
Slabs & Walls: Main Bars
Slabs & Walls: Distribution Bars
5.12
5.13
Minor Elements(e.g. chajja, parapet, lintel, etc.)
Slabs & Walls (blast-resistant buildings)
: 8 mm
: 12 mm
: 10
mm
10 mm
: 8 mm
: 10 mm
: 8
mm
8 mm
: 8 mm
: 12 mm
B.4.2.4 MINIMUM COVER TO MAIN REINFORCEMENT
Clear cover shall be considered over links/ stirrups/ ties. Unless otherwise specified in Geotechnical
Recommendations, minimum clear cover to RCC elements shall be provided as follows:
S. No. Title/Description
Value
UOM
1.0
Foundation slab, base slab, pedestal, plinth beam
50
mm
2.0
Pile Cap:
2.1
Bottom face
100
mm
2.2
Top & Side faces
50
mm
3.0
Retaining Wall, Basement and Pit Wall:
3.1
Face in contact with earth
50
mm
3.2
Free face
40
mm
4.0
Column
50
mm
5.0
Tie beam, Floor beam, Roof beam
40
mm
6.0
Floor slab, Roof slab, Canopy, Lintel
40
mm
7.0
Liquid retaining structure:
7.1
Face in contact with liquid
40
mm
7.2
Face away from liquid but in contact with earth
50
mm
7.3
Free face
40
mm
B.4.2.5 MINIMUM THICKNESS OF STRUCTURAL CONCRETE ELEMENT
The following minimum thickness shall be followed:
S. No. Title/Description
1.0
Footings (all types, with or without beams)
2.0
3.0
3.1
3.2
4.0
5.0
6.0
7.0
8.0
9.0
Pile Cap
Liquid retaining/ Leak-proof structure/ Basement/
Underground Pit:
Base slab
Walls
Floor/ Roof Slab, Walkway, Canopy slab
Cable/Pipe Trench/Launder Walls & Base Slab
Parapet
Louver/Fin
Louver(in contact with liquid)
Precast Trench Cover/ Precast Floor Slab
TemplateNo.5-0000-0001-T2 Rev.1
Value
400
UOM
mm
500
mm
300
150
150
150
125
125
125
150
mm
mm
mm
mm
mm
mm
mm
mm
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Engineering Design Basis
(Civil, Structure & Architecture)
B.4.3
Document No.
B285-000-81-41-EDB-1001
Rev No. 3
Page 27 of 73
STEEL STRUCTURES
B.4.3.1 GENERAL/ DESIGN METHODS
S. No.
1.0
1.1
2.0
3.0
4.0
5.0
5.1
5.2
6.0
7.0
8.0
9.0
10.0
11.0
Project Philosophy
Design, fabrication and erection of the Structural steel work shall be carried out in accordance
with BS EN 1993, in general, and other BS EN Codes as applicable to the specific structures.
Basic consideration of structural frame work shall primarily be stability, ease of
fabrication/erection and overall economy satisfying relevant British Standard Codes of
Practice. Simple and fully rigid design as per BS EN 1993 shall be used. Where fully rigid joints
are adopted they shall generally be confined to the major axis of the column member.
All bolted connections shall be of Bearing type.
All Structural Steel elements continuously exposed to high temperatures shall be designed for
reduced allowable stresses as per BS EN 1993-2.
Crane gantry girders shall generally be of welded construction and of single span lengths.
Steel staircases for main approaches to operating platforms shall have channels provided as
stringers with minimum clear width of 1000mm and slope of approximately 41degree. The
vertical height between successive landings shall not be less than 2.6m nor exceed 4.0m.
Treads shall be minimum 230mm wide made of electro-forged galvanized grating (with suitable
nosing) spaced equally so as to restrict the rise to maximum 200mm.
Galvanized hand rails 1000mm high (from top of grating/top of chequered plate/FFL), shall be
provided to all walkways, platforms, staircases. Toe plate (100mm x 5mm) shall be provided
for all horizontal hand railing (except for hand railing in inclined portion of staircases &
platforms around circular vessels). Spacing of vertical posts shall be 1,500mm (maximum).
Two types of hand railing shall be provided as follows:
For technological structures, walkways, platforms (except platform around/ on circular/
horizontal vessels), staircases: Top rail, mid-rail and vertical post shall be NB 32mm diameter
medium grade MS tubes.
For platforms around circular/horizontal vessels: Top rail shall be NB 32mm diameter medium
grade MS tubes, mid rail shall be 50x6MS flat and vertical post shall be of angle section
L50x50x6.
Electro-forged hot-dipped galvanized MS Gratings shall be as per EIL Standard No. B285-768-0697 (With No Subsequent Painting).
Welded connections shall be adopted during shop fabrication, except where only bolted
connections are required (viz. removable members, galvanized electrical Switch yard
structures and transmission towers). Field/site connections shall be bolted.
Structural connections shall have minimum two bolts of 16mm diameter, unless otherwise
limited by the size of members.
Minimum two nuts shall be used for all anchor bolts except for crossovers & platforms on
grade.
Anchor bolts shall also be checked against concrete break out and pull out. Supplementary
reinforcement around anchor bolts shall be provided wherever required.
Bolted Connections shall be designed as per Job specification no. B285-000-81-41-JS-8123.
B.4.3.2 GRADE OF STEEL
S. No.
1.0
1.1
1.2
2.0
3.0
3.1
3.1.1
3.1.2
3.1.3
3.2
3.2.1
Project Philosophy
Grade of structural steel shall be as followsStructural steel members utilizing hot rolled sections and plates shall be of Grade S355NL or
S355ML steel conforming to BS EN 10025 with a minimum guaranteed Charpy V notch impact
value of 27J at -50°C. Impact test shall be performed on longitudinal test pieces.
Structural steel members utilizing hot finished tubular hollow sections (square, rectangular or
circular) shall be of Grade S355NLH steel conforming to BS EN 10210 with a minimum
guaranteed Charpy V notch impact value of 27J at -50°C.
Steel material used shall be fully killed and must not be aged or subjected to cold deformation.
Dimensions and geometric properties of steel sections shall be as follows:
Rolled Section properties shall be as perBS EN 10365 : Hot rolled steel Channels, I and H sections. Dimensions and masses
BS EN 10056-1 : Structural steel equal and unequal leg angles. Dimensions
BS EN 10055 : Hot rolled steel equal flange tees with radiused root and toes. Dimensions
Hollow Section properties shall be as perEN 10210-2
: Hot finished steel structural hollow sections. Dimensions and sectional
TemplateNo.5-0000-0001-T2 Rev.1
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Page 28 of 73
Engineering Design Basis
(Civil, Structure & Architecture)
3.3
4.0
4.1
4.1.1
4.1.2
4.1.3
5.0
5.1
5.2
5.3
5.4
5.5
6.0
properties
Built up sections/plate girders made out of rolled section and/or plates shall not be used
without written permission of Consultant.
Tolerances on shape and dimensions shall be as follows:
BS EN 10029 : Hot rolled plate. Tolerances on shape and dimensions
BS EN 10034 : Hot rolled I and H section. Tolerance on shape and dimensions
BS EN 10056-2 : Structural steel equal and unequal angle section. Tolerances on shape and
dimensions
BS EN 10210-2 : Hot finished tubular hollow sections. Tolerances on shape and dimensions
All non-preloaded structural bolting assemblies shall be in conformation with BS EN 15048.
Connection Bolts shall be High Strength Structural Steel (Hot Dip Galvanized) Bolts of Property
Class 8.8 (minimum) conforming to BS EN ISO 898-1 & BS EN ISO 4014. Hexagonal Nuts
shall be high nuts (style 2) with property class 8 (minimum) conforming to BS EN ISO 898-2
& BS EN ISO 4033. Both the bolts and nuts shall have a minimum guaranteed Charpy V-notch
impact value of 30J at -50°C. Washers shall conform to BS EN ISO 898-3 & BS EN ISO 7091
and shall have 100HV minimum hardness. All bolting assemblies shall be course pitch as
defined in BS ISO 262. Black bolts shall not be used for structural connections.
Nuts for galvanized bolts must be tapped oversize, tolerance class 6AZ as per BS ISO 965-5,
to accommodate the thickness of galvanizing. Re-tapping shall not be permitted. This overtapping reduces the strength of the nut and therefore a nut that has a proof load higher than
the minimum ultimate tensile load of the assembly must be used. Nuts for galvanized class
8.8 bolts shall be property class 10 and nuts for galvanized class 10.9 bolts shall be property
class 12 to BS EN ISO 4033.
All bolting assemblies including nuts, bolts and flat washers shall be hot dip galvanized as per
BS EN ISO 10684. However for galvanization of bolt assemblies of class 10.9 onwards special
care shall be taken to avoid hydrogen embrittlement.
Anchor bolts of Class 4.6 or higher as per requirement shall be used conforming to BS 7419.
The nuts shall be high nuts (style 2) with property class 5 or higher to BS EN ISO 4032. Bolt
and nuts shall have a minimum guaranteed Charpy V-notch impact value of 30J at -50°C. The
flat washers conforming to BS EN ISO 7091 having 100HV minimum hardness shall be used.
Projected part of anchor bolt shall be painted as per main structure.
Welding electrodes and other welding consumables shall confirm to BS EN 13479 or
equivalent AWS standard and have a better or equivalent Charpy-V notch impact value than
that of parent material.
B.4.3.3 LIMITING PERMISSIBLE STRESSES
S. No.
1.0
1.1
1.2
2.0
2.1
2.2
3.0
3.1
3.2
Project Philosophy
Permissible stresses in structural members shall be as follows:
Hot rolled sections and Tubular sections as specified in BS EN 1993-1-1.
Cold formed light gauge sections as specified in BS EN 1993-1-3.
Permissible stresses in bolts shall be as follows:
Hot rolled sections & tubular sections as specified in BS EN 1993-1-8.
Cold formed light gauge sections as specified in BS EN 1993-1-3.
Permissible stresses in welds shall be as follows:
Hot rolled sections & Tubular sections as specified in BS EN 1993-1-8.
Cold formed light gauge sections as specified in BS EN 1993-1-3
B.4.3.4 LIMITING DEFLECTION
The limiting permissible vertical and horizontal deflections for structural steel members such as
gantry girder for electric overhead crane, manually operated crane, purlin supporting any type of
roofing material under dead + live load or dead + wind load conditions shall be as specified as
specified in Table belowStructure
Pipe Rack
Deflection
Member
Vertical
Beam
Horizontal
TemplateNo.5-0000-0001-T2 Rev.1
Column
Condition
-
Maximum
deflection
Span/150
With Air Cooler
Without Air Cooler
Height/200
Height/100
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Engineering Design Basis
(Civil, Structure & Architecture)
Technological
Structure
Horizontal
Vertical
Sheds
Beam
Vertical
Horizontal (For
sheds without
Crane)
Grating/
Chequered plate
Column
Gantry girder
Column/ Frame
Column/ Frame
Horizontal (For
sheds with Crane)
Gantry girder
Flare Stack
supporting
Structure
Monorail
Horizontal
Overall
structure
Vertical
Girder/ beam
Vertical
Floor and roof
beams and
slab
RCC
Buildings
Horizontal
Columns
Inter storey Drift
Columns
With Equipment load
Without equipment load
Manually Operated
Crane
Electric Operated crane
up to 50T
Electric Operated crane
over 50T
with elastic cladding
with brittle cladding
With Manually Operated
crane
Electric Operated crane
Absolute displacement
Relative displacement
between rails supporting
crane
Span/250
Span/200
Span/200
(Max. 6mm)
Height/200
Span/500
Span/750
Span/1000
Height/150
Height/240
Height /200
Height /400
Span/400
10mm
-
Height/200
Flooring elements not
susceptible to cracking
Flooring elements
susceptible to cracking
Elastic cladding
Brittle cladding
-
Span/450
Span/300
Span/360
Height/300
Height/500
Floor Height/300
B.4.3.5 MINIMUM THICKNESS
S. No.
1.0
2.0
3.0
3.1
3.2
4.0
5.0
6.0
7.0
The minimum thickness of various structural components (hot rolled sections) shall be as given:
Title/Description
Value
UOM
Remarks
Trusses, purlins, side girts & bracings
6
mm
Columns, beams
7
mm
Gussets in trusses & girders
Up to and
including 12m span
above 12m span
Stiffeners
Base plates
Chequered plate
Grating
8
10
8
10
6
3
mm
mm
mm
mm
mm
mm
(on plain)
Notes:
a) The minimum thickness for rolled beams and channels shall be mean flange thickness regardless
of the web thickness.
b) The minimum thickness of structural components (except gratings & chequered plates) which
are directly exposed to weather and inaccessible for repainting shall be 8 mm.
c) The minimum thickness of tubes shall be as specified in BS EN 10210.
d) Structural members exposed to marked corrosive action shall be increased in thickness or
otherwise suitably protected against corrosion.
e) The minimum thickness of structural components (except gratings) which are directly exposed to
weather and inaccessible for repainting shall be 8mm. Chequered plates shall be avoided on
structures exposed to atmosphere.
TemplateNo.5-0000-0001-T2 Rev.1
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(Civil, Structure & Architecture)
Document No.
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Rev No. 3
Page 30 of 73
B.4.3.6 ELECTRICAL SWITCHYARD STRUCTURE & TRANSMISSION TOWER (IF APPLICABLE)
S. No.
1.0
Project Philosophy
All electrical switchyard structure and transmission tower shall be of structural steel with
bolted connections and designed as per of BS EN 1993-3-1 and other BS EN codes as
applicable.
2.0
Structural steel members including bolts, nuts and washers shall be hot dip galvanized in
accordance with relevant BS EN Codes. The Zinc coating on tower members shall not be less
than 900g/m2 of the surface area.
B.4.3.7 PROTECTIVE COATING
Protective Coating (including surface preparation, shop primer, field primer & finish coat) to
Concrete, Structural Steel, Ladders, Spiral Stairways & Hand Rails shall be as per
Specification No. B285-000-02-42-PCS-0001. Protective Coating (including surface preparation,
shop primer, field primer & finish coat) to Gratings shall be as per Standard No B285-7-68-0697.
B.4.4
MASONRY WORKS
B.4.4.1 GENERAL
S. No.
1.0
2.0
3.0
4.0
Project Philosophy
All masonry works shall be designed in accordance with BS EN 1996-1-1 and other relevant
BS EN Codes as applicable.
Masonry units used shall be in conformation with respective BS EN codesEN 771-1, Specification for masonry units -Part 1: Clay masonry units;
EN 771-2, Specification for masonry units -Part 2: Calcium silicate masonry units;
EN 771-3, Specification for masonry units - Part 3: Aggregate concrete masonry units (Dense
and light-weight aggregates)
771-4, Specification for masonry units; Part 4: Autoclaved aerated concrete masonry
EN 771-5, Specification for masonry units -Part 5: Manufactured stone masonry units
EN 771-6, Specification for masonry units -Part 6: Natural stone masonry unit.
Brick masonry shall be of minimum average compressive strength of 7.5 N/mm2.
Minimum compressive strength of Concrete block masonry (solid/hollow) shall be 7.5N/mm 2.
Thickness of external and internal brick masonry walls, except for fire walls, shall be as per
Engineering Design Basis Part-C (Architecture).
B.4.4.2 CEMENT MORTAR
All masonry work shall be constructed in cement sand mortar 1:4 for load bearing walls and1:6
cement sand mortar for non-load bearing walls except half brick partition walls which shall be
constructed in 1:4 cement sand mortar with two numbers of 6 mm diameter MS bars provided at
every fourth course properly anchored with cross walls or pillars.
B.4.4.3 FIRE WALLS
Thickness of all masonry firewalls shall 345 mm or as recommended by applicable API standard.
Wherever required, RCC fire walls shall be provided.
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PART-C
(ARCHITECTURAL)
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Engineering Design Basis
(Civil, Structure & Architecture)
C.1.0
SCOPE
The intend of this document is to establish the minimum criterion to be followed for the design of
various Plant, Non-Plant Buildings & Sheds. Architectural design shall be in accordance with the
Reference documents and Industry standards as specified below.
C.2.0
DEFINITIONS
For the purpose of this document the following definitions apply:
COMPANY/OWNER :
Mongol Refinery
PMC/EIL
Project Management Consultant/Engineers India Limited
CONTRACTOR
:
:
The engineering, procurement, construction and Commissioning
performing agency.
DESIGNER:
The Engineering Division of the CONTRACTOR or the
Consultant, which performs the design of the element in question.
DRAWINGS:
Drawings provided by the CONTRACTOR.
MANUFACTURER:
The service organization which actually manufactures the
material/ product in question.
SUB-CONTRACTOR:
An
organization
providing
specific
services
to
the
CONTRACTOR.
SUPPLIER:
The organization which supplies the material/ product to the
CONTRACTOR/ SUB-CONTRACTOR.
SHALL:
Indicates a mandatory requirement.
SHOULD:
Indicates a strongly recommended requirement.
BUILDING:
The word “Building” shall be understood to include all buildings,
shelters, enclosures, etc. required by this project.
C.3.0
ABBREVIATIONS
A.R.L. - Approach road level
F.F.L. - Finished floor level
F.G.L. – Finished ground level
H.P.P. – Highest pitch point
ACC
-- Autoclaved Aerated Concrete
RCC
-- Reinforced Cement Concrete
C.4.0 BUILDING CODE AND REGULATORY AUTHORITIES
C.4.1 The following building codes and National/International publications shall be referenced and shall form
part of the design basis for building designs.
1. Construction Law of Mongolia
2. Construction Codes of Mongolia
3. Mongolia Building codes (BNbD)
4 . Mongolia National standards (MNS)
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Engineering Design Basis
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5. International Building Code (IBC)
6. Uniform Mechanical Code
7. Uniform Plumbing code
8. International Energy Conservation Code (IECC)
9. National Electrical Code (NEC)
10. National Fire protection association (NFPA)
11. International standard organization (ISO)
12. Occupational safety and health administration (OSHA)
13. American Petroleum institute (API)
14. Other applicable Law, Norms, Rules, codes & Standard.
Note:
a. The latest editions of the standards, codes, guides and specifications, in effect and available at
the time of the award of this project, shall be considered as part of the design criteria.
b. In case of conflict between these documents the more stringent shall take precedence.
c. Reference shall be made to above building codes and National/International publications for
meanings of terminologies and definition.
d. All other relevant latest edition of Mongolian building codes ,norms, laws and regulations of
Ministry of Infrastructure & Ministry of Construction & Urban Development of Mongolia and its
necessary amendment shall also form the part of design basis.
e. Following local Mongolian building codes (BNbD) shall be referred and adhered ,but not be
limited to :
S.NO.
01.
02.
03.
04.
BNbD CODE
БНбД 21-01-02
БНбД 21-02-02
БНбД 21-05-10
БНБД 21-101-12
05.
06.
07.
08.
09.
10.
11.
12.
13.
14.
БНбД 23-02-08
БНбД 23-01-09
БНбД 23-02-09
БНбД 23-05-10
БНбД 31-03-03
БНбД 31-04-03
БНбД 31-07-05
БНбД 31-08-05
БНбД 31-10-05
БНбД 31-14-07
15.
16.
17.
18.
19.
БНбД 31-12-08
БНбД 31-11-09
БНбД 31-19-10
БНбД 31-04-12
БД 31-101-04
20.
21.
БД 31-108-08
БД 31-109-08
БД 31-112-11
22.
23.
БД 31-117-15
БД 31-118-15
TemplateNo.5-0000-0001-T2 Rev.1
TITLE
Fire safety of buildings and facilities
Fire safety code for buildings and structures design work
Parking
Determination of categories of rooms, buildings on
explosion and fire hazard
Day lighting and artificial lighting
Climatic and geophysical parameters for construction
Building thermal performance
Sound protection
Public and civil buildings
Building for administration and utility premises
Roofing work
Sound, heat insulation
Finishing work
Warehouse for chemicals and dry mineral fertilizer for
plant maintenance
Flooring
Industrial buildings
Storage building
Public office buildings
Handbook for barrier-free construction planning for
handicapped
Planning and constructing of bitumen polymer roof
Flooring
Design of living environment which meet the
requirements of the disabled and wheelchair populations
Design and complete roofing
Architecture planning for Public building
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Engineering Design Basis
(Civil, Structure & Architecture)
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
C.5.0
БД 31-119-18
БНбД 51-02-05
БНбД 53-02-05
СНиП III-18-75
БД 55-102-12
БНбД 81-15-06
БНбД 81-11-06
SNIP 11.12.77
SNIP ll 11.12.77
BNbd 12-01-03
EPDM ROOFING HANDBOOK
Masonry structures
Steel structure
Metal structure
Structures of gypsum-fiber boards
Finishing work
Flooring work
Design Protection from noise
Protection from noise
Building code of Mongolia
INDUSTRY STANDARDS
The following Industry standards are referenced and shall form part of the design basis :
American society for Civil Engineers (ASCE)
American Society for Testing Materials (ASTM).
American Architectural Manufacturers Association (AAMA)
Steel Door Institute (SDI)
American Hardboard Association (AHA)
Ceiling & Interior Systems Construction Association (CISCA)
Builder’s Hardware Manufacturers Association (BHMA)
National Electrical Manufacturer’s Association (NEMA)
National Fire Protection Association (NFPA)
National Particle Board Association
Underwriters Laboratories (UL)
National Woodwork Manufacturer’s Association (NWMA)
Architectural Woodwork Institute (AWI)
US Department of Commerce, Bureau of Standards, Product Standards (PS)
British Standards (BS)
International Organization For Standardization (ISO)
National Concrete Masonry Association (NCMA)
Oil industry Safety Directorate (OISD)
C.6.0
DESIGN CRITERIA
C.6.1
General
Unless local codes take precedence, the building design shall comply with applicable provisions of
the International Building Code and the building systems’ design shall comply with applicable
provisions of the Uniform Mechanical, Plumbing, Fire Codes and energy conservation code (IECC).
All analysis and design shall be in accordance with applicable laws, ordinances, codes and
regulations of every authority having jurisdiction shall be applied as a first precedence.
Alternate standards and codes meeting the requirements of the referenced documents and codes
may be used with approval of COMPANY.
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C.6.2
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Building code design parameters
Unless local codes take precedence, the basic standards for building design including architectural,
structural, mechanical, electrical, plumbing and fire protection shall comply with relevant American
standards, codes and practice.
The building design shall be based on established architectural standard practices, which provide
adesign that is functional and economical for its intended use. Functional requirements shall establish
the architectural design for all buildings.
C.6.3
EIL Standards
Architectural design incorporates codes and standards as referred in the design philosophy of
respective engineering disciplines as well as applicable engineering standards and specifications of
Engineers India Limited (EIL).
C.6.4
ARCHITECTURAL DESIGN REQUIREMENTS
The final design of the buildings shall use the highest standards of professional architectural design
to create aesthetically pleasing and functional facility. The design of the buildings shall give
consideration to and incorporate environmental factors into the design solutions to the fullest
practical extent, including climate and noise levels.
Architectural design for buildings shall follow:
o
Energy conservation criteria.
o
High wind/storm resistant building design.
o
Design shall able to resist the severe climate with extreme cold conditions that prevail in the
Mongolia.
o
Overall conditions consist of a severe and hostile environment for people, equipment and
material. Particular consideration shall be given when selecting materials and equipment.
o
Appropriate considerations for passive energy conservation and personnel comfort from the
aggressive climate and environment.
o
Consideration for future expansion.
C.7.0 HEALTH, SAFETY AND ENVIRONMENTAL REQUIREMENTS
C.7.1
BNbD 2.09.12-87code should be observed in design works for hygiene requirement for industrial
buildings.
C.7.2 The following materials should not be used:
a. lead based or lead containing paint
b. asbestos containing product
c. solder containing lead
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C.7.3
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Building design shall be based on the use of non-combustible materials for all structural elements,
exterior walls, floor(s), roof and interior partitioning.
C.7.4
Buildings or sheds housing process related equipment shall be adequately ventilated in accordance
with the requirements of API RP500. For non-process related buildings and rooms, reference to Static
Machine Equipment design basis shall be made.
C.7.5
Buildings shall maintain a positive pressure with relation to exterior conditions to prevent infiltration
of gases, etc. into the building.
C.7.6
All Control room Building to be designed based on the requirements and recommendations relating
to ergonomic and human factors in designing control centers as per applicable provisions of
ISO11064.It shall be provided for human comfort for eliminating or minimizing the potential for human
errors.
C.7.7 Use construction materials with low or zero VOCs to minimize off-gassing, which leads to a healthier
indoor environment.
C.8.0
SITE PLANNING & LANDSCAPING
Site planning of building shall take into account aspects like inter-relationship of the buildings with
the whole system, movement pattern, traffic and road net-work, safety regulations, service network,
fire safety, climatic and environmental aspects, site conditions like site dimension, contour, drainage,
noise level, view, future expansion, visual aspects, Natural Light and Ventilation etc.
BNbD 31-113-11 shall be followed in designing of green spaces surrounding the Non Plant buildings
(No less than 50% tenure land area shall be green). If the building is located in park surroundings,
the amount of green areas will be reduced by 30%).Select native, hardy, and drought-tolerant plant
species that require low maintenance.
Suitable Landscaping treatment shall also be done around the important buildings suiting the local
condition and horticultural practices. Such treatment shall generally consist of road side plantation
and beautification of building entrance areas. Landscape shall be low in maintenance, low water
demand and high in aesthetic and environmental value. Necessary water supply, piping/sprinklers
shall also be provided. Generally following elements shall be part of landscaping.
o
Tree plantation
o
Hedges, shrubs, ground covers, creepers and climbers
o
Flowering, ornamental plants
o
Lawns
o
Paving
o
Earth-forms
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o
Landscape lighting
o
Landscaping furniture
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C.9.0 BUILDING REQUIREMENTS
C.9.1 SPATIAL REQUIREMENTS
a. Building design shall be based on materials and construction methods best suited for the project.
Various spaces/rooms shall be judiciously sized and shall be integrated logically to generate the total
building plan taking into account the following parameters.
b.
o
Climate and Geophysical parameters
o
Location and Orientation
o
Locality codes
o
Seismic
o
Cultural background
o
Construction time
o
Maintenance
o
Material availability
o
Performance and life
o
Construction cost
o
Statutory requirements
o
Any specific requirement pertaining to particular buildings
The circulation spaces shall be provided for integrating various types of spaces like staircase,
elevators, corridors, entrance foyer, corridor, passage ways, ramps, loading /unloading areas and
emergency exits as means of access/exits.
c.
Toilet & Drinking water facilities (hot and cold water) facility shall be mandatory requirement for all
buildings with human occupancy. Other requirements like locker & change room, pantry ,dining room
, first aid room shall be provided as specified.
d.
The requirements of Utility spaces are generated due to provision of services like Air-conditioning,
pressurization, fire fighting, electrical, UPS, Battery , telephone exchange room etc. These spaces
shall be provided as per specified building services and statuary requirement of building codes .
e.
Sizing of rooms/spaces:
In case of plant buildings, sizing shall be decided based on equipment/ panel/ machinery lay-out
considering operation, maintenance, clearances, HSE requirement etc. obtained from originating
discipline of the facility.
For non-plant buildings, sizing shall be done based on guidelines of Mongolian Codes and Owner’s
specific requirements. In absence of guidelines in local codes and IBC publications such as “Time
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saver standard”, “Neufert – Architects data” shall be followed.
f.
Minimum dimensions of rooms/ spaces
Unless otherwise local codes take precedence minimum ceiling height shall be as follows:
i. Public buildings : 2.75 m measured from the floor to bottom of slab. Minimum clear head room
under beam shall be 2.4 m. In case of air conditioned rooms, height shall not be less than 2.4 m
measured from floor to the lowest point of AC duct or the false ceiling or as per applicable
Mongolian building codes.
ii. Industrial buildings : 3.6 m or as per applicable Mongolian building codes.
iii. Utility buildings : Established as per functional requirement following equipment layout, licensor
recommendations, process related requirements but not less than as specified for industrial buildings.
Unless otherwise defined in local codes, for this project following building categories shall be
followed:
a. Public buildings shall includes the following : Administration building, Training center, Gate
house Lab buildings, Control room, Satellite control room ,fire station, medical center, Canteen
and other buildings of similar nature.
b. Utility building shall includes the following : Sub-station ,process related building, Pump
house, DG Shed , Compressor shed , STG shed ,GTG shed and other buildings of similar
nature.
c. Industrial buildings shall include the following : Warehouse , Storage shed, Workshops
(electrical/mechanical) , Chemical and catalyst storage shed and other buildings of similar
nature.
g.
Accessibility
These requirements deal with barrier free access to, movement within and around buildings. In
industrial complexes, which are normally not open to public, requirement of accessibility shall be
applicable to following building occupancy types where occupancy of differently able staff/ visitor is
expected.
o
Gate house
o
Administration and training Building
o
Laboratory
o
Canteen
o
Medical centre
o
Main Control Rooms
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At least one entrance, preferably main entrance per building shall be accessible to persons with
disabilities. All common area open to public and staff and all facilities such as lobby, toilets, lifts,
parking etc. shall be accessible to all persons with disabilities.
h.
Parking
Necessary Vehicular Parking space requirement for staff ,visitor and handicapped persons for the
following buildings shall be provided as per the guidelines specified in parking norms БНбД 21-0510: Автозогсоол (BNbD 21-05-10):
o
Gate house
o
Administration and training Building
o
Laboratory
o
Canteen
o
Medical centre
o
Main Control Room
C.9.2 FIRE SAFETY REQUIREMENTS
a. Every building having human occupancy shall be provided with exits sufficient to permit safe egress
of occupants in case of fire or other emergency.
b. Provisions for life safety in relation to fire prevention and fire protection of buildings shall be as per
applicable norms and standards specified in BNbD 21-01-02 and BNbD 21-02-02 (БНбД 21-01-02
:
Барилга,
байгууламжийнгалынаюулгүйнбайдал
&БНбД
21-02-02
Барилга,
байгууламжийнзурагтөсөлзохиохгалынаюулгүйннорм ).
c. Safety from fire and like emergencies shall be taken into account in building design as per applicable
provisions of codes and standards. The buildings shall be provided with RESCUE and EMERGENCY
exits sufficient to permit safe escape of occupants in case of emergency. The exits shall be in terms
of direct exit, doorway, lobby, corridors, stairwells (Internal/ external) etc or to areas having safe
access to the outside.
d. Building materials, structures, rooms and parts of building are classified by their fire hazard and fire
resistance. Fire hazard classification of buildings, rooms, structures and building parts are used in
determination of requirements necessary for protection of them form fire depending on fire hazard
and their fire resistance.
e. The number of rescue exits and their width shall be designed depending on maximum number of
people which shall go through, the distance between most remote point of location of people and the
closest rescue exit. Parts of different function buildings isolated with fire wall shall have independent
rescue exits.
f. Fire protecting barrier is designed to halt fire spread and the products of burning to other rooms or
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places except from fire burning point. Fire protecting barriers include the fire wall, partition, and
flooring, fire door , windows , tambour-sluice. Buildings and it’s parts isolated with fire wall are divided
into fire categories based on their fire resistance grade, structural and functional fire hazard as per
applicable norms specified in Building code.
g. Fire resistant walls, partition walls, flooring, structures of fire prevention zone, filling the light aperture
shall be made of fire resistant materials.
h. Building structures are classified by their fire resistance and fire hazard. Fire resistance index is the
limit of fire resistance of the structure and fire hazard of structure is the category of fire hazard. Limit
of fire resistance and there is legend fixed by UST 3839-85 standard. Limit of fire resistance for
windows is determined by duration for loss of integrity.
i. Building materials are classified by their fire hazard. Fire hazard of building materials is determined
by their fire technical indices. These are combustibility, inflammability, flame spreading over the
surface, smoke generation and toxicity.
j. Exits shall be so located that the travel distance (The distance to be travelled from any point in a
building to a protected exit or external escape route or final exit measured along the line of travel) on
the floor shall not exceed the distance given below.
k. Emergency exit should not be designed close to each other, e.g. they should be scattered in different
parts of building. The minimum distance -L between the scattered exits is determined by following
formula: L>1,5 P
(where P = perimeter of room)
l. Unless local code take precedence following travel distance shall be considered :
Occupancy group
Maximum travel distance (M)
Public building
30.00
Industrial building
30.00
Hazardous building
22.50
Other buildings not listed above
30.00
Note: For fully sprinkled building, travel distance may be increased by 50 percent. Travel distance
shall be measured from the most remote point within a storey along the natural run obstructed path
of horizontal or vertical egress travel to the door to the exit.
C.9.2
NATURAL VENTILATION AND DAYLIGHTING
a. Established level of ventilation in terms of air changes per hour shall be maintained for all spaces as
per
applicable
norms
and
standardsgiven
in
БНбД
41-01-11:
Халаалт,
агаарсэлгэлтбакондиционер (Heating, ventilation and conditioning). Natural ventilation shall also
be supplemented by mechanical or electrical means of ventilation in all human occupied areas.
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b. Established level of illumination shall be maintained for all parts of the buildings by means of windows,
ventilators , artificial lighting etc. shall be as per the norms and standards of БНбД 23-02-08:
Байгалийнбазохиомолгэрэлтүүлэг (Day lighting and artificial lighting) . For the purpose of
illumination, day lighting shall also be supplemented by artificial illumination particularly at fire-exit.
Established level of illumination by artificial lighting shall be as specified in electrical design basis.
c. Requirements of lighting (day lighting, artificial, emergency and combined ) in industrial, residential,
public, administrative premises in terms of KEO, CDL, acceptable combination of meanings of
blindness and light pulsation co-efficient, cylindrical lighting, discomfort indexes ,applicable lighting
norms etc shall be govern by the principles and provisions of SNIP 23-05-95 .
d. Reflectance values for room surfaces will significantly impact daylight performance and should be
kept as high as possible. It is desirable to keep ceiling reflectance over 80%, walls over 50%, and
floors around 20%. Of the various room surfaces, floor reflectance has the least impact on daylight
penetration.
C.9.3
ACOUSTICS
C.9.3.1 Specified acceptable noise level and reverberation time shall be maintained inside a building/shed
as
per
applicable
provision
of
norms
and
standards
of
БНбД
23-05-10:
Дуучимээтусгаарлалт (Sound protection).
C.9.3.2 The SNIP 11-12-17 norms and rules should be observed in noise protection design with a purpose
of providing an allowable level of noise pressure and level of sound in working places in production
and supplementary buildings, industrial enterprise halls, indoors of residential and public buildings
as well as land development in cities and other settlements.
C.9.3.3 Unless otherwise local code take precedence following references shall be referred to for the
purpose.
a. Reverberation

The reverberation time (for definition see ISO 31/VII) in empty rooms, with finished floors
as indicated in the Finish Schedule, shall not exceed the following values:
 Office rooms, training rooms, laboratories, conference
1.0 second
Rooms, control rooms, instrument and electrical shops
 Tea rooms, corridors and other circulation spaces
1.25 second
b. Noise limits
 Noise levels in buildings shall not exceed the following limits:
Area Description
Areas in workshops and machinery where
Maximum Acceptable Noise Limit
70 dB(A)
communication is required
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Workshop offices, computer rooms
Open plant offices
60 dB(A)
50 dB(A)
Offices and conference rooms
45 dB (A)
c. Protection against noise should be executed in accordance with the GOST 12.1003-76.Protection
against noise by acoustic construction methods should be done on the basis of acoustic calculations
and aim at reduction of noise level. Required noise level in any space shall be maintained by means
of :

Segregating noise sources by buffer zones

Dampening of noise levels by damping devices

Providing Acoustic treatment with acoustic material (on walls, ceilings, floors, as required).
C.9.4 SAFETY/SECURITY
The building design shall incorporate security and safety to meet the project requirements, design
criteria, and the building codes.
The designs shall incorporate:
o
Required exits at proper locations.
o
Required security alarm devices.
o
Audible and visual fire and smoke alarms.
o
Appropriate fire rated assemblies and materials.
o
Code required door hardware.
o
Appropriate signage and graphics both for building identification and interiors in Mongolian and
English.
C.9.5
BUILDING SERVICES
Following services shall be provided for all buildings as essential services.
C.9.5.1 Plumbing Services
All human occupied buildings shall have toilet and drinking water facility. Accordingly plumbing
system consisting of water supply, distribution, plumbing and sanitary fittings and fixtures, drains,
sewer disposal etc. shall be provided in all buildings.
Note: Reference shall be made to Engineering Design Basis (Part A of this design basis) for supply,
distribution and disposal system including piping and other required accessories, devices, drains,
rain water harvesting etc. This design basis covers roof drainage, plumbing and sanitary fixtures only.
Roof drainage
a) Flat roof
Rain water drainage of flat roof shall be through rain water pipes. For small areas, drainage may be
by means of spouts. Slope of finished roof shall not be less than 1 : 25 .Roof gutters shall be provided
in case of large drainage area of roof.
b) Pitched roof
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Slope of finished roof shall not be less than 1:10. Rain water drainage of pitched roof shall be through
valley/ eaves gutter and rain water pipes. For small roof drainage area and lesser roof height, free
fall of roof water shall be considered.
C.9.5.2 Electrical Services
Necessary space, rooms, provisions such as Electrical Room, Building/ BMS Control Room, Battery
Room, UPS Room etc. required for electrical system shall be provided in buildings. For detail
requirement reference shall be made to Engineering Design Basis (Electrical).
C.9.5.3 Air Conditioning, Heating& Cooling services
Necessary space, rooms, provisions such as AC plant, AHU, Blower room etc. required for HVAC
system and hot water heating system, shall be provided in buildings. For detailed requirement,
reference shall be made to Engineering Design Basis (SME).
C.9.5.4 ICT Services (Information and communication technology)
Necessary space, rooms, provisions such as Server Room, IT Hubs, security and surveillance,
Control Room & UPS Room etc. required for ICT system shall be provided in buildings. The following
communications systems may be required within a building:
a. Public address system shall be a one-way announcement type system. The system shall be capable
of addressing each floor individually, as well as the entire building. There shall be a central location
for system control.
b. Provisions for a video system installation shall include outlet boxes, conduits, and necessary fittings.
The design shall include provisions for video locations as determined by Owner's requirements.
c. Provisions for a telephone system installation shall include outlet boxes, conduits, and necessary
fittings. The design shall include provisions for telephone locations as determined by Owner's
requirements.
d. Provisions for a data distribution system installation shall include outlet boxes, conduits, and
necessary fittings. The design shall include provisions for data locations as determined by Owner's
requirements.
e. Provisions for a CCTV Cameras for security and surveillance of important building like Gate house
and Administration building for installation shall include outlet boxes, conduits, and necessary
fittings. The complete monitoring of operation shall be executed in separate control and monitoring
room .The design shall include provisions for data locations as determined by Owner's
requirements.
C.9.5.6
Fire fighting services
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Reference shall be made to Engineering Design Basis (Civil).Necessary space, rooms, provisions
such as equipment Room, safety room , clean agent room. required for firefighting system shall be
provided in buildings.
C.9.7
BUILDING THERMAL PERFORMANCE
a. The level of thermal protection of the buildings shall be determined in accordance with the applicable
norms and standards specified in building thermal performance code (БНбД 23-02-09:
Барилгындулаанхамгаалалт ).
b. The building is designed to meet the demands of living and working environment in human occupancy
buildings, ensuring long-term structural reliability and durability, and building heating and air
circulation during the heating season. to meet the heat requirements of the building to ensure the
working conditions and equipment of the minimum heat required.
c. The energy efficiency buildings shall be determined in accordance with the classification. The specific
consumption of heat heating of buildings is determined by measurement according to MNS 58272007.The public buildings meet the requirements of "a" and "b" or "b" and "c", the construction heat
protection requirements shall be met. Industrial buildings must meet the requirements of "a", and "b".
d.
The air leakage resistance of the building windows, doors, industrial building windows, shall not be
less than the resistance of the air leakage requirements specified in code.
e.
Provide wind barrier at entrance to minimize infiltration of outdoor air into a space such as airlock
or vestibule etc. Seal around the exterior doors/windows to be provided to avoid infiltration of air.
f.
Insulation shall be provided for the entire building envelope to archive . Exterior walls shall be
insulated. If additional insulation is required, blanket or rigid insulation shall be provided in furred
space between exterior wall surface and interior drywall finish surface.
g.
The following maximum thermal transmittance values (U-value) are required where practical and in
accordance with norms and standards provided in BNbD 23-02-09 (БНбД 23-02-09).
C.9.7
o
Roof - 0.18 W/m²K
o
Walls- 0.25 W/m²K
o
Ground Floor slab - 0.19 W/m²K
o
Windows(frame and glazing)- 2.2 W/m²K
AESTHETICS
Architectural scheme shall be based on general principles of Aesthetics. Building facades shall reflect
such principles like symmetry, balance, proportion, rhythm, light and shade etc. Building Elements
like canopies, overhangs & shading devices, gutters, roof projections, parapets, door; window/
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ventilator composition, External wall/ facade shall be considered as contributory elements to
aesthetics. Local Climatic conditions and architectural practices shall be considered while designing
the buildings including local Heritage, Architecture, and Art& Culture in design.
Architectural scheme including design of above mentioned elements shall be subjected to OWNER/
PMC approval.
C.10.0 BUILDING ELEMENTS
C.10.1 Plinth Protection
The building shall be provided with minimum 1000 mm wide (100mm high from top of Approach Road
Level) plinth protection with building drain around the building.
C.10.2 Finished Floor Level (FFL)
In general, FFL of the Building shall be determined with respect to top of approach road or pavement.
Following schedule shall be adhered to for FFL of the building:

Control Room Building/ Satellite Rack Room Building(Building having false flooring):
Top Road level of Approach road + 150 mm + Height of false flooring

Sub Station Buildings:
(i)
Top of approach Road level + 300 mm (Cable Cellar floor)
(ii)
Top of approach Road level +150 mm (Transformer bays) with pebbles.
(iii)
In case, there is no cellar, the FFL shall be F.G.L. + 150mm + depth of the trench as
per electrical requirement.

Other Buildings/ Sheds:
Top of approach Road level +300 mm to 450 mm and or as per functional requirement.

Plant Buildings (Unit area) floors (HPP) shall be maintained as per Design Basis of Civil.

FFL of Loading/ Unloading bays of Warehouses, Godowns, and stores shall be maintained
as loading platform level of trucks with outward slope to avoid ingress of rain water splash.
Notes:

In case of approaches with different top levels, the highest top level of approach road/
pavement shall be considered.

FFL shall be same throughout in a building.

FFL of toilet, pantry, and kitchen shall be 10-15 mm lower than that of the building FFL to
check ingress/spillage of water.

FFL of Warehouses, Stores may be kept same as loading/unloading bays/ platforms where
Forklifts etc. are used for internal movement of items.
C.10.3 Building Access
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Engineering Design Basis
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Vehicular access shall be provided for buildings. Buildings shall be accessible through building
entrance from the approach road/ paving by means of steps/ ramps .
For Barrier free accessibility requirement for handicapped person :
(Refer clause C.9.1.g for applicability and other details)
C.10.4 Steps/ Ramps
a. Steps/ ramps shall be provided for access to the Building for pedestrian/ vehicular, equipment entry
as per relevant code. Minimum 1000 mm wide platform shall be provided in between entrance door
and steps/ramps. This extended platform and floor near the entrance shall have outward slope to
avoid ingress of rain water splash. Following dimensions of the steps/ ramps shall be adhered to.

Stairs width
1500 mm minimum clear

Tread
300 mm minimum clear

Riser
150 mm maximum clear

Maximum no. of risers per flight
12 Nos.

Landing width
1500 mm minimum clear

Width of step/ ramp
1500 mm minimum clear
b. Designing of Ramp shall consider the following:
o
Ramp shall not be curved.
o
Single row of tactile warning block (TGSI) shall be placed at 300mm before the beginning and
300mm after the end of each ramp.
o
Internal ramps should be avoided. Where required, internal ramps should not rise more than
2000mm. Maximum gradient shall be 1:15.
o
End landing shall be provided both at bottom and top of the sloped path and also
run changes direction. Length of end and intermediate landing shall not be less
1500mm. Where the ramp run changes direction, minimum landing dimension
1500mm x 1500mm.
o
Width, slope and other requirements of ramps shall be as per following table :
Level
difference
Other
requirement
1200mm
Handrail
on both
side
Yes
1:12
1500mm
Yes
751 to
3000mm
1:15
1800mm
Yes
More than
3000mm
1:20
1800mm
Yes
Landing after
every 5m
ramp run
Landing after
every 9m
ramp run
Landing after
every 9m
ramp run
150 to
300mm
301 to
750mm
Maximu
m
gradient
1:12
Ramp
width
where the
than
shall
be
-
For equipment entry :
Minimum width
: 1500 mm
Slope
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c. Ramp access for physically challenged shall be provided for important buildings such as admin,
Canteen, control room etc or else specified. Design of ramps shall be as following:

Width
1500mm minimum

Slope of Ramp
Greater than 1 in 20 or maximum of 1
in 12 for short distance up to 9000 mm.

Railing
Ramp shall have handrails on at least
one side, and preferably two sides,
that are 1000 mm high, measured
from the surface of the ramp, that are
smooth, and that extend 300 mm
beyond the top and bottom of the
ramp.

Ramp surface
Non-slip

Level Platform
Ramp shall have a level platform at the
top which is at least 1800 mm long, if
a door swings out onto the platform or
toward the ramp. This platform shall
extend at least 300 mm beyond each
side of the doorway.

Level Platform intervals
Ramp shall have level platforms at 10
m to 12 m intervals for purposes of rest
and safety, and shall have platforms
minimum 1.5 m length wherever they
turn.

Straight clearance at the
Ramp shall have at least 1800 mm of
bottom
straight clearance at the bottom.
C.10.5 Building Entrance
Building entrance shall consist of steps, ramps, building access platform, entrance door, canopies/
overhangs/ portico and entrance lobby.
C.10.6 Access Platform
Minimum 1000 mm wide platform shall be provided in between entrance door and steps/ramps.
o
A clear, firm and level landing of at least 1800mm x 1800mm shall be provided on either
side of the entrance door.
o
Appropriate tactile ground surface indicator (TGSI) should be provided for leading to
entrance.
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C.10.7
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Canopy/Overhangs
Canopy/ Overhangs (projected outwards to access road/ pavement) shall be provided in all building
entrance.
In place of projected Canopy/ Overhang covered space, recessed inside the building may also be
provided depending on building design.
Canopy/ Overhang shall be of pleasant aesthetic design contributing to the building aesthetics.
C.10.8
Entrance Lobby
Buildings having multiple rooms/ spaces connected by corridor/ passage shall be provided and
connected with Entrance lobby located immediately after entrance door.
Space provision for security check, waiting lounge, reception etc. shall be kept in Entrance lobby
as required.
Air-lock Lobby/ Vestibules :
Air lock lobby/vestibules shall be provided at all entry exits to reduce the heating & air-conditioned
loads.
C.10.9
Corridors and Passageways
Corridors and passageways shall be provided as a part of circulation system to connect individual
rooms/ spaces of the buildings for smooth circulation within the building and as means of egress.
Width of corridors and passageways shall be finalized based on requirements of Fire and Life
safety, accessibility and packing size of equipment (if equipment movement is envisaged) subjected
to minimum width of 2400 mm.
Requirements for fire and life safety :
Width of Corridors and passageways shall not be less than calculated width of exit doorways
leading from them in the direction of travel to the exit. Dead end corridor length in exit access shall
not exceed:
o
Educational, Institutional, assembly occupancy
: 06 m
o
Others
:15 m
Requirements for accessibility :
o
Minimum unobstructed width of corridor shall be 1500mm, preferably 1800mm.
o
For wheel chair turning (90 degree), width shall be 1500mm, 1500mm long in the direction
of travel.
o
For wheel chair turning (180 degree), width shall be 1800mm, 2000mm long in the direction
of travel.
C.10.10 Service Entry
Separate service entry shall be provided for service areas such as Kitchen, Air-condition/
Pressurization plant, Electrical Rooms Battery & UPS Room etc. A common service entry may be
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provided depending on spatial arrangement.
C.10.11 Emergency Exits
Emergency exits shall be provided for the building as per fire safety codes and for individual
functional spaces such as Console area, Electrical room etc. Emergency exits shall be located in
such a manner that escape route is direct, unobstructed & without passing through any other
functional areas to safe area. Corridors/staircases shall be provided as escape route to the
emergency exits.
C.10.12 Stairs
Staircases shall be provided for vertical circulation system, Exits and roof access.
Staircases shall be provided in required numbers with requisite components such as Treads,
Risers, Landings, Handrails etc as below :
Minimum width of tread
(without nosing)
Maximum height of riser
Maximum no. of risers per flight
Minimum width of flight
300 mm
150 mm (Public buildings )
190 mm (Other buildings)
12
Min 1500 mm
Requirements for Fire & Life safety :
Requirements of stairs for fire and life safety are tabulated below :
Internal staircase
External staircase
Curved staircase
Spiral staircase
Number of staircases
Discharge through
staircase
Minimum width of tread
(without nosing)
Maximum height of riser
Maximum no. of risers per
flight
-
Types of staircases :
Internal staircases are located inside the
building and may be with an external wall.
These are the staircases provided on the
external wall/façade. These shall be open on atleast one side.
Curved stairs shall not treated as part of means
of egress. These may be used as part of exit
access, provided depth of tread is not less than
280 mm.
Shall be limited to low occupant load and to a
building not exceeding 9 meter in height.
Diameter shall not be less than 1500mm
Minimum 2 numbers
Actual numbers shall be based on
occupant load and travel distance.
Discharge from stairs to exit discharge shall be
a) directly, or b) through exit passageway, or c)
through lobby.
At least 50 % of the staircases shall discharge
as per a) and/ or b)
250 mm (other buildings)
300 mm (public buildings)
190 mm (other buildings)
150 mm (public buildings)
12
Internal staircases :
Internal staircases shall meet following requirements :
Shall have minimum 120 minute fire rating
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Shall not be arranged around lift shaft
Access to staircase shall be through minimum 120 minutes fire rated door.
Shall terminate at the level of exit discharge. Access to basement shall be by
separate staircase
Minimum width of flight
1500 mm
Handrail
Handrail shall be provided on one side for
width less than 1500mm and on both sides for
width 1500mm and more
Projections of handrails in the staircase
width shall not be more than 115mm
External staircases :
External staircases shall meet following requirements :
Discharge
External stairs shall be directly connected to the
ground.
Door to external staircase
Any doorway leading to external staircase shall
be minimum 120 minutes fire rated door
Inclination of staircase
Inclination shall not be more than 45 degree
Width
Not less than 1500mm
Handrails
1000mm high, on both sides with provisions of
balusters with maximum gap of 150 mm.
Stairs for roof access :
o
In case of buildings of more than one story, where staircases are already provided for
vertical circulation, minimum one stair case shall be continued for roof access.
o
In case of single storied buildings having provision for future expansion, minimum one
staircase shall be provided for roof access.
o
In case of other single storied buildings, steel ladder or staircase shall be provided for
roof access.
o
If there are equipment placed on roof of such buildings, staircase on shall be provided
for operation / maintenance of the equipments.
o
Also if, the height of the building is more than 4.5 metre, staircase shall be provided.
o
For very small single storied buildings of normal height like security cabin, scale room,
small pump houses etc. ladder or staircase may be avoided as roof of such buildings
can be accessed by normal maintenance ladders.
C.10.13 Lifts
Lifts shall be provided for vertical circulation in multi storied buildings or as per OWNER specific
requirements.
Capacity and number of lifts :
Capacity and numbers of lift shall be decided in accordance with the IBC.
Requirements for accessibility :
o
It is recommended that in multi-storied buildings there be at least one lift accessible to
transport persons with disabilities at all usable levels. This requirement shall be finalised in
consultation with the owner.
o
The minimum size of the lift shall be 1500mm x 1500mm
o
Handrails shall be placed at height of 900 mm from the floor level and shall be fixed on
both sides and at the rear of the lift.
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C.10.14
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Wall System
Walls shall be of clay brick/ light weight concrete/ AAC masonry. For blast resistance, walls shall
be of RCC. Following schedule shall be adhered to for wall material and thickness shall be finalized
during detail engineering phase based on required thermal performance of each elements:
Wall Type
External wall
Thickness
o
Minimum 380 mm thick ACC block Masonry
wall with outside minimum 150 mm thick
Insulation.
o
Other wall configuration with Insulation as
per thermal performance criteria.
Internal partition wall
o
Fire rating as per fire safety code.
o
250 mm thick Single layer ACC masonry
wall .
o
Minimum 75 mm thick. Gypsum board
partition.
Walls abutting Transformers
Blast resistant wall
o
Fire rating as per fire safety code.
o
380 mm ACC block masonry wall .
o
Fire rating as per Electrical design basis.
RCC wall as per structural design basis.
Notes:

Internal wall for toilets shall be of 250 mm thick Single layer ACC masonry wall .
 For internal partition of toilet cubical, high pressure laminate system shall be used.
 Nominal steel requirement as per structure design shall be provided Masonry wall pillars for
stability.

Wherever conduits or pipes are required to be concealed within partition wall, the wall
thickness shall be increased suitably.

Wherever, bricks are not commonly available, suitable alternative material shall be used after
obtaining owner’s approval.
Fire rated walls:

Fire rated walls of required rating (minimum 2 hours) shall be provided in following
areas
of applicable buildings.

Enclosure of internal staircase: 2 hours fire rating.

Exit passageway/ corridor : 2 hours fire rating

Walls separating various fire zones and separation walls between protected and nonprotected areas of Process Control Rooms / Satellite Rack Rooms shall also be of 2 hours
fire rating.
C.10.15
Doors
Doors shall be provided for access, security and safety at all entry & exits of rooms, functional
areas & the buildings. Air tight door shall be provided in pressurized area and in gaseous
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protection area. Fire check doors shall be provided with minimum two hours rating as per
statuary requirement. Sizes of the doors shall be determined on the basis of the following
schedule:

Equipment, Panel area

Other areas
Volume of movement through door.

Minimum Entrance door size
1500 mm x 2100 mm (wall opening size)

W.C., Bath Cubicle Door
800 mm x 2100mm (wall opening size)

Minimum size of other doors
1100mm x 2100mm (wall opening)
Size of max. Equipment including packing.*
Emergency door shall be opened outwards.
Notes:

Motor operated sliding roll up doors shall be provided in the main equipment entry door and
for opening sizes exceeding 9 sq.m.
* not applicable in case of the door where the maximum certified size of fire door shall be
provided.

Blast resistant Control room entry door shall be provided with blast Resistant baffle wall in
front of entry door and shall have 45 degree/ 90 degree overlap on both sides as per
applicable codes.

Doors provided in exit passageway (from exit to exit discharge) shall be fire rated doors of
120 minutes rating.

Fire doors with 120 min fire resistance rating shall be provided particularly at the entrance to
lift lobby and stair well where a funnel of flue effect may be created, including and upward
spread of fire, to prevent spread of fire and smoke.

Any doorway leading to external staircase shall be minimum 120 minutes fire rated door.

Access door to internal staircase shall be minimum 120 minutes fire rated door.

In case of central corridor which is part of exit access of the building, doors of rooms (except
for rooms having assembly occupancy) shall open inwards.

Width of Doors shall not be less than 1000 mm .
C.10.16 Windows/ ventilators
Windows/ ventilators shall be provided in all areas of building, shed for natural lighting, ventilation
and visibility at working level in accordance with following Principle:
Sr.No.
A
Parameter
EIL Guidelines
Area of windows, ventilators
For the purposes of ventilation, total openable
area of the windows/ventilators shall be as
required for necessary air changes as per
applicable norms and standards or other relevant
stipulations subjected to a minimum of 10 % of
the floor area to be ventilated.
B
Design
Windows/ ventilators are also elements of
building aesthetics and shall be provided in
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accordance with approved Architectural control
scheme. Increased window/ ventilator area shall
be provided, if required for this purpose.
C
Window/ ventilator level
Windows shall be provided at working levels.
Ventilators shall be provided below roof beam.
Areas accommodating panels/equipments shall
be normally provided with ventilators at high level
for unobstructed distributed lighting.
D
Window/ ventilators in high
Rooms, spaces, sheds having height more than
rooms/ areas
4 metre shall have windows and ventilators at
multiple levels to ensure required natural lighting
and ventilation at all levels. Such windows &
ventilators must be provided at all intermediate
working levels of such high rooms, spaces,
sheds.
F
Window/ ventilators in Control
Windows/ ventilators/ openings of Control Room
Rooms, satellite Rack Rooms
shall be provided in accordance with applicable
etc.
codes.
Note: Transparent roof light sheeting shall be provided in roofing of shed type structures for day
lighting.
C.10.17 Roof Air extractors
In case of for non- mechanical ventilated process related Sheds/ storage and warehouse sheds,
water tight & leak proof, Roof mounted air driven extractors shall be provided to ensure required air
changes in accordance with applicable norms and standards.
Roof Air Extractors shall be Wind Driven/operated type and shall be factory made. The size and
numbers shall be as required for required ventilation.
Suggested calculation of size and numbers :
Number of Air extractors =
Volume of the Room X Required airchangeperhour
Exhaust capacity of one extractor (considering throat size, height etc.)
They shall be suitably designed and detailed to ensure that the leakage of rain water is prevented.
C.10.18 Ridge Ventilator
In case of Non mechanically process related Sheds, water tight & leak proof, Roof mounted air driven
extractors shall be provided to ensure required air changes in accordance with applicable norms and
standards.
Ridge ventilators shall be wind driven/operated type and shall be factory made. The size shall be
as required for required ventilation.
Suggested calculation of size / numbers :
Qv = (VxN)/ (Rx3600)
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Qv = Quantity of Ridge Ventilators required.
V = Volume of the building
N = Number of air changes
R = Exhaust capacity of ridge vent @ stack height (considering available throat size, length of ridge
ventilator etc.)
The Ridge ventilators shall be suitably designed and detailed to ensure that the leakage of rain water
is prevented. If required for necessary ventilation, wind driven/ operated Roof Air Extractors shall
also be provided.
C.10.19 Shading Devices
Shading devices may be provided over windows for rain & sun protection .
These devices may be avoided if the thickness of wall is more than 450 mm .
C.10.20 Parapet
For non-accessible roof Maximum of 600 mm high and 1000 mm high for accessible roof.
Parapets shall be of RCC for all buildings with minimum 300 mm high at ridge line.
C.10.21 Roof Gutter:
Gutter with rain water pipes shall be provided for all the building for roof water drainage. Sizing of the
gutter shall be based on area to be drained and number of outlets. For Workshop/ Warehouse or
shed steel sheets gutter shall be provided and for big size of workshops/warehouse RCC shaft shall
be provided at the end of gutter.
RCC Roof Gutters shall be provided for large RCC roof areas and where providing necessary slope
of finished roof is difficult.
Metal sheet Eaves & Valley Gutters shall be provided for metal sheet roof.
Suggested calculation of Gutter sizing :
A = Roof area to be drained in Sq. M
B = Rainfall Intensity (mm/Hr) of the place
C = Runoff coefficient for roof surface (Concrete -0.8 to 0.95, Metal sheet -0.95)
D = Runoff in Cubic m / hr (D = A x B x C)
E = Total rain water coming from roof = D / No. of gutters
V = Velocity of water to be discharged by gutter drain (as per Manning’s formula)
𝟏
𝟐
𝟏
V = [ ] 𝒙 [𝑹𝟑 𝒙𝑺𝟐 ]
𝒏
Where:
V= Velocity in meter per second
R= Hydraulic radius in M [For gutter R= (d x w)/ 2 x d +w), where d=effective depth of gutter & w =
width of gutter]
n = Manning Coefficient of Roughness
S= Slope of Hydraulic gradient
Q = d x w x V (discharge)
If Q> D, gutter size is correct. If Q<D then d and w of the gutter need to be resized.
Roof water accumulated in gutters shall be drained through Rain Water Pipes
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C.10.22 Rain Water Pipes
Rain water pipes shall be provided in adequate numbers ensuring roof water drainage. The Rain
Water Pipes if visible on facades of important buildings shall be suitably concealed.
If feasible, the pipes shall be located at the back-side of the buildings, which, in cases of unimportant buildings (visually) may be kept exposed. Suggested Rain Water Pipe sizing and numbers
:
Diameter
Roof Area (Flat roof, sq. metre)
Rain
water
Rainfall rate (mm/hour)
25
50
75
100
125
150
50
260
130
85
65
50
40
75
800
400
260
200
160
130
100
1650
800
550
400
330
275
125
3100
1550
1030
780
620
510
150
4850
2400
1600
1200
970
800
Pipe
(mm)
The pipes shall be located at suitable spacing considering slope of finished roof etc..
C.10.23
Railings
Railings of 1000 mm high shall be provided in stairs and in all unprotected openings in slabs as a
safety device. Steel railings in loading/ unloading bay of shall be of removable type.
C.10.24 Toilet
Toilet shall consist of Gents Toilet, Ladies Toilet (as per OWNER requirement) and separate
drinking water enclosure. Requirement of fittings & fixtures shall be as per International building
code(IBC).Toilet shall be provided in all buildings /sheds having human occupancy in accordance
with following principle.
Parameter
EIL Guidelines.
Gents Toilet
Gents Toilet shall be provided in all buildings /sheds having
human occupancy as per requirement.
Ladies Toilet
Ladies Toilet shall be provided in buildings having human
occupancy as per requirement.
Toilet for physically
At least one number toilet for physically challenged shall be
challenged
provided in each floor of Admin building, Canteen, Training
Centre, Laboratory, Office buildings and in other human
occupied buildings where physically challenged personnel
can be deployed.
Janitor
Each Toilet block shall be provided with suitable janitor facility.
Toilet plumbing, piping
Toilet plumbing, piping, etc. visible on external facade of
building shall be visually concealed by means of shafts etc
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considering building aesthetics.
Note: Drinking water facility (as required) shall be provided in all buildings /sheds having
human occupancy. Provision of Drinking water facility may be provided in Pantry also.
Number of fixtures :
Unless otherwise specified in local codes, the number of fixtures shall be in accordance with
applicable requirements as tabulated below :
Building Type : Public building
User
Male
WC
1 no per 25
Female
1 no per 15
Building Type :Industrial buildings or other buildings
User
WC
Male
1 no for upto
15
2 nos for 16
to 35
3 nos for 36
to 65
4 nos for 66
to 100
Female
1 no for upto
12
2 nos for 13
to 25
3 nos for 26
to 40
4 nos for 41
to 57
Number of fixtures
Urinals
1 no for 7 to 20
1
nos for
21 to 45
2
nos for
46 to 70
3
nos for
71 to 100
-
Number of fixtures
Urinals
1 no for upto
20
2 nos for 21
to 45
3 nos for 46
to 70
4 nos for 71
to 100
-
Wash Basin
1 no per 25
1 no per 25
Wash Basin
1 no per 25 or
part of thereof
1 no per 25 or
part of thereof
Toilets for persons with disability :
o
Minimum one number Unisex Toilet for persons with disability shall be provided in each
floor fulfilling following requirements:
o
Suitable arrangement of fixtures, grab rails (horizontal, vertical) and manoeuvring space
for both wheel chair users and Ambulant Disabled People.
o
Toilet door shall be outward opening door with clear opening width of 900mm. The door
shall be provided with minimum 600 mm long horizontal pull bar at a height of 900 mm
and horizontal pull handle at 700 mm height, both on the inside of the door.
C.10.25 Drinking Water
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Drinking water facility shall be provided in all buildings having human occupancy. The facility shall
either be provided inside the pantry or in some convenient area having provisions of water supply
(Hot and cold) and water disposal.
Requirement of drinking water fountain/ taps :
Unless otherwise specified in local codes ,the number of fixtures shall be in accordance with following
provision .
Generally 1 per every 100 or part there of shall be used as guiding principle for providing required
no. of drinking water fountain tap.
C.10.26 Pantry
Pantry (for tea/ coffee preparation, drinking water, snacks distribution etc.) shall be provided
in all buildings having considerable human occupancy. In case of low occupancy, provisions
for Tea/ Coffee dispenser/ preparation facility etc. shall be kept in some convenient area
having provisions of water supply, washing facilities, water disposal etc.
C.10.27 Electrical Room
Electrical Room may be provided to accommodate electrical/telephone main distribution box.
However, depending on size, space requirement, the same may be mounted in wall recess.
C.10.28 Partitions
Partitions shall be provided for flexible space arrangement in Office spaces if specified, Control Room
etc. The partitions shall be of removable type. Glazed panels shall be provided for visibility in the
partitions as per requirement.
C10.29 False Ceiling
False ceilings shall be provided in all human occupancy areas having air-conditioned for the purpose
of reducing room volume and to hide air conditioned ducting etc. and also to maintain acoustic level
inside any space.
C.10.30 False/Cavity flooring
False/ cavity flooring shall be provided to accommodate under floor cabling in Instrumentation areas
like Rack Room, UPS Room etc. Extent of false/ cavity flooring shall be as per Instrumentation
requirements.
C.10.31 Transformer Gate
Steel gate of suitable size in front of transformer bays in substations building may be provided as per
electrical requirement.
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C.11.0 SPECIFIC DESIGN REQUIREMENTS
a. Openings in masonry or concrete walls for piping shall be provided with sleeves and weather guards
for the required size.
b. Provisions shall be made in the design for access and servicing equipment located in, on or around
the building in an ergonomically correct manner.
c. Rooftop penetrations should be avoided. Equipment should be located at grade rather than on
rooftop for ease of service. If serviceable equipment is located on the roof, ease of access shall be
considered (such as installation of a permanent ladder).
d. Air locks shall be considered in occupied buildings for frequently used entrances.
e. Air in toilets, locker rooms, janitor closets, lunchroom, battery rooms, and laboratories shall be once
through (no recirculating) 100% exhausted to outside. Toilet, lockerand smoker's rooms shall have
a continuous exhaust system based on applicable codes.
f. Intake air stacks and louvers shall be designed to prevent rain, air borne debris and birds from
entering the duct system. Air shall enter the building at a maximum rate as per applicable codes.
g. Utility services will normally be routed below the depth of frost line outside of a building wall. The
following services may be required:
1. Domestic water
2. Fire water
3. Instrument air
4. Low pressure steam and condensate
5. Sanitary sewer
6. Storm drain
h. Toilet fixtures, electric drinking fountains, service sinks, floor drains and cleanouts shall be
provided as per required.
j. Piping and plumbing within laboratories shall be easily accessible and flexible in arrangement by
use of chases, tunnels, and service corridors. Wastewater piping for laboratories shall be corrosion
resistant material and compatible with the chemicals being handled. Cleanouts shall be plentiful
and easily accessible.
k. Emergency showers and eyewashes are required within the lab space or adjacent corridors.
l. Rooms or buildings containing equipment shall have at least one door or opening large enough to
bring in or take out the largest piece of equipment including the packing material. The space above
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Engineering Design Basis
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process type equipment such as compressors, pumps, large motors, etc. shall be sufficient for
mobile handling equipment if required.
m. All exterior doors will swing out. The active leaf of double doors, where required for equipment, will
also serve as exit doors.
q. Interior partitions shall be gypsum board on metal studs applying fire resistant drywall or moisture
resistant drywall where required. Concrete block may be used as interior partitions where greater
protection, occupancy separation, noise control or durability is required. Wood framing shall not be
used for interior partitions.
r. Ground floor slab to be provided with required insulation as per applicable codes to avoid ingress of
freezing from the soil below the ground.
s. Roof shall be sufficiently insulated to provide thermal protection to the building envelope as per
applicable codes to avoid heat loss and prevent ingress of freezing from outside.
t. Insulation requirement for structural element including substructure , superstructure , floor slab
reference shall be made to job specification for architectural works.
C.12.0 STRUCTURAL AND CONSTRUCTION ELEMENTS
Following type of structural system to be considered for respective building. The list is not limited
and shall be updated and finalized during detail engineering.
S. No.
Buildings Name
Types of Structure
PLANT BUILDINGS
1.
Main Control Room
Blast resistant (refer note-01)
2.
Control Room- 1 (CPP)
RCC frame + Masonry wall (refer Note-3)
3.
Control Room-02 & OMS
Blast Resistant (refer note-1)
4.
Control Room-03
RCC frame + Masonry wall (refer Note-3)
5.
Satellite Rack Room--01 & 02
Blast Resistant ( refer note-1)
6.
Substation -01,02,03,04,05 &06
RCC frame + Masonry wall( refer Note-3)
NON-PLANT BUILDINGS
7.
Administration +Training Center
RCC frame + Masonry wall( refer Note-3)
8.
Canteen Building
RCC frame + Masonry wall( refer Note-3)
9.
Lab Building
RCC frame + Masonry wall( refer Note-3)
10.
Medical Centre
RCC frame + Masonry wall( refer Note-3)
11.
Fire Station
RCC frame + Masonry wall ( refer Note-3) and
Metal structure over fire tender bay (refer note-02)
12.
Workshop Building
Metal structure (refer note -02)
13.
Ware House
Metal structure (refer note -02)
14.
Gate House-1
RCC frame + Masonry wall (refer note-03)
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Metal structure over driveway (refer note-02)
15.
Gate House-2
RCC frame + Masonry wall (refer note-03)
Metal structure over driveway(refer note-02)
UTILITY BUILDINGS
16.
Compressor shed
Metal structure (refer note -02)
17.
Pump house
RCC frame + Masonry wall (refer Note-3) and
Metal structure over pump house (refer note-02)
18.
DG shed
Metal structure (refer note -02)
19.
Chemical House
RCC frame + Masonry wall (refer Note-3)
20
STG Building
RCC frame + Masonry wall (refer Note-3)
Note:
1. Blast Resistant building -Reinforced concrete frame with reinforced concrete exterior wall.(Final
determination of building blast resistance shall be based upon Risk Assessment)
2. Steel framed with metal roofing and siding.
3. Reinforced concrete frame with light weight concrete masonry infill exterior/interior walls.
C.13.0 BUILDING DESCRIPTION
Building design shall be based on established standard architectural practices, selection of materials
and construction methods specified for the project. Detailed specific requirements are outlined in the
building layout drawings. Building designs shall provide adequate space for electrical, mechanical,
telecommunication, and fire protection equipment. Separate male and female rest room facilities,
showers, locker rooms, and change rooms shall be provided where specified.
The DESIGNER shall be required to provide a complete written building code analysis for each
structure to ensure that all the requirements of the IBC, Uniform Building Code, Uniform Fire Code
and Local Regulatory Authorities have been reviewed and the project is in compliance with the most
stringent code. The CONTRACTOR shall review all the building code analysis to verify that there are
NO errors or emissions from the codes and that all DRAWINGS reflect these code requirements.
(a)
GENERAL
(i)
Location shall be as per Overall Plot Plan.
(ii) The sizes and designs described here and shown on the CONCEPTUAL DRAWINGS, are overall
minimum requirements for each building.
(iii) The final building sizes, configurations and partitions will depend upon the actual requirements,
mainly the electrical and instrumentation equipment requirements, including space around
equipment needed for servicing, removal and replacement of equipment per manufacturer’s
standard and various codes.
(iv) Barrier free design for buildings like Administration Building, Canteen, Laboratory, maintenance
Workshop, Gate house ,Control room etc. shall be designed as per codes.
C.13.1 PLANT BUILDINGS
(A)
MAIN CONTROL ROOM (MCR)
(i)
Concept
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Construct New building as Main control room, Size and configuration are shown in
CONCEPTUAL DRAWING no. B285-000-81-41-02101.
(ii)
Description of the Facility
o
Blast resistant, Single storey reinforced concrete frame structure, with RCC column,
beams ,roof etc.
o
The building shall be structurally designed to withstand the blast pressure as
elaborated in Structural Design Basis.
o
Console area, Rack room & Engineering room shall have provision for future panels
to be housed based on instrumentation requirement .
o
In absence of any special design requirement for control room, National or
International design code for control room, OISD -163 shall be used.
o
Fire risk zoning as per relevant fire protection codes and standards.
Building space shall be provided for the following:
o
Central Console Room
o
Rack room
o
Engineering room
o
Clean agent room
o
Tele Communication Room
o
Equipment Instrument Room
o
Lobby / Vestibules
o
Director’s offices
o
Control Room Offices
o
Chief Shift Coordinator for control room with private toilet
o
Process Supervisors Offices
o
Approx. 30 office cubicles
o
Visitor Office
o
Conference Rooms for 25 persons .
o
Shift Men and Women Toilet Facilities w/ showers and lockers
o
Staff Men and Women Toilet Facilities
o
Switchgear room
o
Battery room
o
Mechanical and Electrical Room
o
PPE / Safety Equipment
o
Parking facility as per norms
Access (computer) flooring shall be provided in the Console Room and adjoining support
areas. The Console Room shall have indirect lighting and be designed to comply with
ergonomically standards.
(B)
CONTROL ROOM -01,02,03& OMS
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(i)
Concept
Construct New building Control room building. Size and configuration are shown in
CONCEPTUAL DRAWING no. B285-000-81-41-02111, B285-000-81-41-12121 , B285-00081-41-02131 , B285-000-81-41-02141.
(ii)
Description of the Facility
o
Single storey reinforced concrete frame structure, with RCC column, beams ,roof etc.
o
Final determination of buildings' blast resistance shall be based upon Risk Assessment
.
o
Blast resistant to be The building shall be structurally designed to withstand the blast
pressure as elaborated in Structural Design Basis.
o
In absence of any National or International design code for control room, OISD -163
shall be used.
o
There are two structure types: Blast resistance building structure consists of a concrete
frame, concrete roof and reinforced concrete exterior walls. Interior walls shall be
made out of plastered and reinforced concrete block.
o
Non-blast resistance building structure consists of concrete frame with concrete roof
and reinforced, Plastered Insulated cavity masonry exterior walls. Interior walls shall
be constructed of plastered and reinforced masonry.
o
Console area, Rack room & Engineering room shall have provision for future panels
to be housed based on Instrumentation requirements.
o
Fire risk zoning as per relevant fire protection codes and standards.
Building space shall be provided for the following :
o
Control Room,
o
Rack Room,
o
Electrical Room,
o
Computer Room,
o
Battery room,
o
Mechanical Room,(AC Plant room & AHU room)
o
Conference room,
o
Supervisor’s offices
o
Dining Room
o
Unit operations personnel cubicles
o
Inspectors’ cubicles or Shift IN charge
o
Custom agent officials’ cubicles,
o
Pantry
o
Men and Women toilets, lockers and showers.
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Access (computer) flooring shall be provided in the Console Room and adjoining support
areas. The Console Room shall have indirect lighting and be designed to comply with
ergonomically standards.
(C)
SATELLITE CONTROL ROOM -01 & 02
(i)
Concept
Construct New building Control room buildings. Size and configuration are shown in
CONCEPTUAL DRAWING No. B285-000-81-41-02201, B285-000-81-41-02211.
(ii)
Description of the Facility
o
Blast resistant, reinforced concrete frame structure, with RCC column, beams ,roof
etc.
o
The building shall be structurally designed to withstand the blast pressure as
elaborated in Structural Design Basis.
o
The SRR shall be elevated from ground with clear headspace of 2.5 m for Cables.
o
Blast resistance building structure consists of a concrete frame, concrete roof and
reinforced concrete exterior walls. Interior walls shall be made out of plastered and
reinforced concrete block.
o
In absence of any National or International design code for control room OISD -163
shall be used.
o
Rack room & Engineering room shall have provision for future panels to be housed
based on instrumentation requirement .
o
Fire risk zoning as per relevant fire protection codes and standards.
Building space shall be provided for the following :
(D)
o
Instrumentation Rack Room,
o
Engineering room
o
Electrical Room,
o
UPS room
o
Battery room,
o
Mechanical Room, (AC plant room & AHU room)
o
Unit operations personnel cubicles
o
Inspectors’ cubicles or shift in charge room
o
Pantry
o
Men and Women toilets, lockers and showers etc.
SUB STATION- 01,02,03,04,05& 06
(i) Concept
Construct New Sub Stations buildings. Size and configuration are shown in
CONCEPTUAL DRAWING no B285-000-81-41-12401, B285-000-81-41-02411,
B285-000-81-41-02421, B285-000-81-41-02431, ,B285-000-81-41-02451.
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(ii) Description of the Facility
o
Sub-stations are unmanned buildings that house electrical equipment.
o
RCC framed structure building with RCC columns, beams, roof and masonry
filler walls etc.
o
The Switchgear Room elevated from ground for crawl space for Cables below
that. The Transformer bays as shown in the drawing shall be provided.
o
Spaces shall be provided for Switchgear room ,cable cellar, Battery room, and
Mechanical room, documentation room etc.
o
The building should comply with standards for dimensions for Transformer bays.
o
Transformers shall be positioned outside the building and separated by a Fourhour fire wall.
C.13.2 NON- PLANT BUILDINGS
(A)
ADMINISTRATION BUILDING & TRAINING CENTER
(i) Concept
Construct New Administration building & training center Size and configuration are
shown in CONCEPTUAL DRAWING no. B285-000-81-41-02701 & B285-000-8141-02702.
(ii) Description of the Facility
o
The building shall be designed to accommodate administrative and contingency
management personnel.
o
The two storied building structure shall be constructed of reinforced concrete or
steel columns and beams, with plastered reinforced concrete masonry and glass
exterior walls.
o
Building to be designed for additional one floor for office expansion in future.
o
For office areas and cubicles ,Interior walls shall be constructed of plastered
concrete block or gypsum board on metal studs assemblies.
o
Two Number elevator w/1300 lbs. capacity (min.) shall be provided.
o
Double glass unit for window/ventilators and Structural glazing in exterior walls.
o
Access and egress of personnel will be monitoring by security system.
Building space shall be provided for the following:
GROUND FLOOR;
o
Entrance lobby & Reception with Waiting Area,
o
Security room & CCTV room.
o
01 nos. Training room- 64 person seating capacity.
o
01 nos. Conference room-26 person seating capacity.
o
98 nos. office cubicles (approx.)
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Engineering Design Basis
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o
05 nos. HOD cabins with PA cubicle
o
15 nos. cabins of other officers
o
IT department
o
Planning department
o
Human resource department
o
Administration department
o
Public and community relation office
o
Network operation center
o
Data / Telecom room
o
Battery room
o
Mail room
o
Document control center
o
Mechanical/electrical room
o
Disaster management room
o
Documentation room
o
Printer/Xerox/server room
o
Record room
o
Store
o
Pantries for office
o
Dining area with pantry
o
Gents & Ladies toilets with drinking water facilities
o
Janitor closets
o
Other Support Facilities
FIRST FLOOR;
o
Lift lobby
o
02 nos. Director room with attached toilet and PA cubicle
o
01 nos. Training room- 64 person seating capacity.
o
01 nos. Conference room-26 person seating capacity
o
01 nos. Conference room-14 person seating capacity
o
116 nos. office cubicles (approx.)
o
05 nos. HOD cabins with PA cubicle
o
18 nos. cabins of other officers
o
HSE & CED department
o
Material control and purchase department
o
Accounts & Finance department
o
Commercial department
o
Projects
o
Mechanical room/electrical room.
o
Disaster management room
o
Documentation room
o
Printer/Xerox/server room
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o
Pantries for office
o
Dining area with pantry
o
Gents & Ladies toilets with drinking water facilities
o
Janitor closets
o
Other Support Facilities
(B) FIRE STATION
(i)
Concept
Construct New Sub Stations buildings. Size and configuration are shown in
CONCEPTUAL DRAWING no. B285-000-81-41-02811.
(ii)
Description of the Facility
o
Single-story building with reinforced concrete columns, beams and slab/ roof
and infill block work.
o
Non-blast resistance building structure consists of concrete frame with
concrete roof and reinforced, Plastered Insulated cavity masonry exterior
walls. Interior walls shall be constructed of plastered and reinforced
masonry/ Interior walls shall be constructed of gypsum board on metal studs
frame.
o
The five bays fire tender area & one bay Trailer powder jeep shall be a steel
frame with enclosed double skin insulated walls and roof panels.
The Building Houses the following functional areas:
o
Foam Storage Area
o
Training room
o
Fire Marshal Room
o
Fire Personal Waiting room,
o
2 nos. cabins
o
Conference room
o
Record Room
o
First Aid Room
o
Disaster room
o
PPE Rooms
o
Storage Rooms for Fire equipments.
o
Parking Area for fire fighting vehicles.
o
Locker/ Change Room & Toilets
o
Dining room and pantry room
o
Electrical/Mechanical Rooms
o
Control room
o
Data processing room
o
Battery room
o
UPS room
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Engineering Design Basis
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Special Considerations:
o
The Parking Area for fire fighting vehicles & Dry Powder Filling Station shall be
designed for full height of the building.
(C) CANTEEN BUILDING
(i)
Concept
Construct New Canteen building. Size and configuration are shown in CONCEPTUAL
DRAWING No. B285-000-81-41-12781.
(ii)
Description of the Facility
o Single-story building with reinforced concrete frame structure columns, beams and
slab/ roof and plastered masonry exterior walls.
o The entire building shall be air conditioned with separate systems for Kitchen and
Dining areas.
o The Canteen (Cafeteria) Building consists of two (2) parts: an Executive Dining Area
with a capacity to serve 72 diners and an Employee Dining Room with a capacity to
serve approximately 264 diners in TWO shifts.
o The Kitchen capacity shall be capable of producing 2 meals, breakfast and lunch, for
approx. 250 diners per meal, plus delivering meals for shift employees in other
buildings.
o The Covered Parking Shed for vehicles shall be designed for the building as per
parking norms and standards.
o The Kitchen area shall be equipped with an exhaust system including all required
openings and air duct extensions to accomplish the segregated systems. Kitchen
shall also be equipped with fire protection as required.
The Building Houses the following functional areas:
o Janitor Closets
o Dining area with capacity for 132 people per meal
o VIP Dining Room with capacity for 36 person per meal.
o Salads and food serving area
o Hot and cold drinks area dispenser
o Dirty dishes, washing and waste disposal areas
o Loading docks and entries for receiving /delivery
o Storages for dry food, pots/pans, and dishes
o Meat and vegetable preparation areas
o Hot food preparation area
o Bakery and pastry areas
o Kitchen Staff men and women toilet facilities w/ showers and lockers
o Laundry room
o Manager and catering offices
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o Preliminary food cleaning and preparation areas
o Thaw room
o Walk-in cooler
o Walk-in freezers
o Dry Goods Storage
o Catering preparation area
o Washing station w/ waste disposal
o Loading dock for services
o Electrical /Mechanical rooms
(D) LABORATORY BUILDING
(i)
Concept
Construct New Lab building. Size and configuration are shown on CONCEPTUAL
DRAWING no. B285-000-81-41-12761.
(ii)
Description of the Facility
o Single-story building with reinforced concrete frame structure columns, beams and
slab/ roof.
o Plastered Insulated cavity masonry exterior walls. Interior walls shall be constructed
of plastered and reinforced masonry./Interior walls shall be constructed of plastered
masonry or gypsum board on metal studs.
o Laboratory hoods and gas chromatograph hoods shall be provided where required.
Adequate mechanical ventilation system shall be defined in the detail engineering
phase.
o Laboratory design shall be finalized upon receipt of laboratory equipment cut sheets
and processes to be used within the building lab areas.
The Building shall Houses the following functional areas:
o Reception
o Manager’s office
o 3 nos. Cabin & 8 nos. Cubicles
o Men and Women Toilets facilities
o Service room
o Pantry
o Water testing lab
o Gas Chromatography lab
o CFR Engine Room
o Crude oil evaluation lab
o Bottle washer room
o Petroleum test lab
o Spectro and furnace lab
o Gas bottle storage
o Sample receiving area
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o Library/raw data storage area
o Chemical room
o Conference room
o Instrument room
o Electrical /mechanical room
o UPS room
o Battery room
(E) GATE HOUSE -01 & 02
(i)
Concept
Construct New Gate House Buildings. Size and configuration of Gate House-1 & 2
are shown on CONCEPTUAL DRAWING No. B285-000-81-41-12731 & B285-00081-41-12751 respectively.
(ii)
Description of the Facility
o Single-story building with reinforced concrete frame structure columns, beams and
slab/roof.
o Plastered Insulated cavity masonry exterior walls. Interior walls shall be constructed
of plastered and reinforced masonry./Interior walls shall be constructed of plastered
masonry or gypsum board on metal studs.
o This facility will serve as the main entry/exit point to the refinery for visitors, vendors,
and contractors.
o Design the facility to provide 180 degree line-of-sight visibility from inside the Security
Guard House.
o
It shall be completely air-conditioned.
o The drive bays shall be a steel frame with enclosed metal siding walls and roof
panels.
The Building shall houses the following functional areas:
o Security guards room,
o Vestibule area,
o Men’s and Women’s toilets w/ lockers and showers,
o Storage and Janitorial room,
o Pantry
o Offices
o Pass section
o Visitor waiting area
o Luggage management area
o Visitor’s Pantry
o CCTV room,
o
File room,
o Mechanical/electrical room,
o Arms Room
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o Punching area
o Checking area
(F) MEDICAL CENTRE
(i)
Concept
Construct New Medical Centre. Size and configuration are shown on CONCEPTUAL
DRAWING B285-000-81-41-12771.
(ii)
Description of the Facility
o Single-story building with reinforced concrete frame structure columns, beams and
slab/roof.
o Plastered Insulated cavity masonry exterior walls. Interior walls shall be constructed
of plastered and reinforced masonry./Interior walls shall be constructed of plastered
masonry or gypsum board on metal studs.
o It shall be completely air-conditioned.
The Building shall houses the following functional areas :
o Sick room with two beds,
o Emergency exam room,
o Reception/Waiting area,
o 2 nos.- Doctor’s room,
o Dentist room,
o Nurse’s room,
o Pharmacy room,
o Recovery room with two beds,
o Medical supply storage room,
o Men’s and Women’s toilets with lockers and showers,
o Janitor closet,
o Cloth supply room,
o Sheltered emergency access to the treatment room accessible for the ambulance
service.
(G) WAREHOUSE
(i)
Concept
Construct New Warehouse building. Size and configuration are shown in
CONCEPTUAL DRAWING on B285-000-81-41-02841.
(ii)
Description of the Facility
o The primary structure of the buildings shall be designed and constructed as a single
span steel frame assembly with insulated metal wall and roof panels.
o office area shall be provided and shall be constructed with a reinforced steel frame
including beams, columns and concrete floor.
o The wall separating warehouse shall be plastered reinforced concrete blocks and
interior walls shall be gypsum board on metal studs assemblies.
o Chemical storage spaces shall be mechanical exhausted.
The Building shall houses the following functional areas:
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o Lobby / Waiting with Reception,
o 4 nos. cubicle office spaces,
o Men and Women’s Toilet Facilities,
o Locker and change room
o Storage and Janitor closet,
o Mechanical / Electrical room,
o Freezer / Storage area,
o PPE / Storage area,
o Chemical Storage,
o Outdoor Covered Tire Storage & Shelving (fenced)
o Outdoor Covered Oxygen, Acetylene & Miscellaneous Storage (fenced).
o 2 nos. Offices,
o Document/Record room
o Conference room,
o Pantry,
o Print Area,
o Storage,
o Janitor closet,
o Warehouse space with steel racks and pallet racks
o Floor storage area
(H) WORKSHOP BUILDING
(i)
Concept
Construct New Workshop building. Size and configuration are shown in
CONCEPTUAL DRAWING no. B285-000-81-41-02831.
(ii)
Description of the Facility
o The primary structure of the buildings shall be designed and constructed as a
single span steel frame assembly with insulated metal wall and roof panels.
o Office area shall be provided and shall be constructed with a reinforced steel
frame including beams, columns and concrete floor.
The wall separating warehouse shall be plastered reinforced concrete blocks
and interior walls shall be gypsum board on metal studs assemblies.
The Building shall houses the following functional areas :
o Men and Women Toilet facilities,
o Locker and change room
o Electrical/Mechanical Room,
o Instrument, Inspection, Metering and Electronic Workshop areas,
o 4 nos. Manager’s room,
o Offices
o Men’s and Women’s toilets w/ lockers and showers,
o File and Storage Rooms,
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Engineering Design Basis
(Civil, Structure & Architecture)
o Pantry/Dining room
o Preparation room
o Document/record room
o Meeting room
(I)
COMPRESSOR SHED
(i)
Concept
Construct Compressor/equipment sheds. Size and configuration shall be as per
respective equipment layout.
(ii)
Description of the Facility
o
The primary structure of the buildings shall be designed and constructed as a
single span steel frame assembly with insulated metal wall and roof panels.
o
A office area shall be provided and shall be constructed with a reinforced steel
frame including beams, columns and concrete floor.
o
An overhead bridge crane shall be provided in each Compressor shed with
lifting capacity to be defined during detail engineering.
(J)
DG SHED
(i) Concept
Construct DGSHED . Size and configuration shall be as per respective equipment
layout.
(ii)
Description of the Facility
o
The primary structure of the buildings shall be designed and constructed as a
single span steel frame assembly with insulated metal wall and roof panels.
o
A Switch gear, control room, battery ,ups room shall be constructed with a
reinforced steel frame including beams, columns and concrete floor.
o
An overhead bridge crane to be provided in building shall be defined during
detail engineering.
Utility Building shall house space and required facilities for:
o
DG area
o
Switch gear room
o
Control room
o
UPS & battery room
o
All service lines/ pipes/ ducts etc. from Utility Building to Terminal Building shall
be through utility tunnel.
o
(K)
Adequate mechanical heating and ventilation system shall be provided.
PUMP HOUSES
(i)
Concept
Construct Compressor/equipment sheds. Size and configuration shall be as per
CONCEPTUAL DRAWING no. B285-000-81-41-12871 & B285-000-81-41-12876.
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Engineering Design Basis
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(ii)
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B285-000-81-41-EDB-1001
Rev No. 3
Page 73 of 73
Description of the Facility
o
The Pump area of the buildings shall be designed and constructed as a single
span steel frame assembly with insulated metal wall and roof panels.
o
Electrical panel room, HVAC room, Battery room, operator room shall be
provided and shall be constructed with a reinforced steel frame including
beams, columns and concrete floor.
o
An overhead bridge crane shall be provided in pump house with lifting capacity
to be defined during detail engineering.
C.14.0 BUILDING CONSTRUCTION
The CCM 23-01-09 shall be complied and adhered to when drafting or preparing the general or partial
engineering plans for construction. Design of building shall consider the climatic and Geophysical
parameter in construction .Adherence to the Construction Law of Mongolia shall be made for the
Construction Related activities, Production of construction material, supervision and commissioning.
C.15.0 BUILDING FINISHING MATERIAL
a.
All finishes shall be best suited to the industrial environment of a refinery process plant in Mongolia.
Use of finish material that may be easily damaged is to be avoided. Select materials that are nontoxic in nature.
b.
The local climate and natural conditions, required performance, construction period, construction
costs, supply volume, maintenance and management requirements and other such factors will be
taken into consideration when selecting the construction methods and materials used in each part of
the building.
c.
For architecture finishes of all buildings (INTERNAL/EXTERNAL) Refer document no: B285-000-8141-JS-2001&2002 .Colour Scheme for all Architectural items shall be as approved by the
Owner/PMC.
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