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ORIGINATED
This document contains proprietary infonnation developed by and for exclusive use of Saudi
Electricity Company. Your acceptance of the document is an acknowledgement that it must be used
for the identified purpose/application and during the period indicated. It cannot be used or copied for
any other purposes nor released to others without prior written authorization of Saudi Electricity
Company. Saudi Electricity Company will not be responsible for misuse and/or misapplication, and
any hann resulting therefrom. Saudi Electricity Company also reserves the right to take any
necessary actions to protect its interest against unauthorized use.
BY
Engr. Khalaf M. AI-Ma'ashi
Division Manager,
Engineering Support
CERTIFIED
BY
Engr. Abdullah M. AI-Garni
Department Manager,
Transmission Standards &
Specifications
Date of Approval:
APPROVED
Engr.
BY
Saleh N. AI-Sohaibani
Executive Director,
Engineering & Projects
March 11, 2009
PAGE NO. 1 OF 18
78TMSS 12RO/SZA
TRANSMISSION MATERIALS STANDARD SPECIFICATION
78-TMSS-12, Rev. 0
TABLE OF CONTENTS
1.0
SCOPE
2.0
CROSS REFERENCES
3.0
APPLICABLE CODES AND STANDARDS
4.0
CONCRETE EPOXY FLOOR DUST PROOFER AND HARDENER
4.1
4.2
4.3
4.4
5.0
RAISED FLOOR SYSTEM
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
6.0
Use
Composition and general requirements
Specific Requirements
Surface preparation
Use
General Requirements
Specific Requirements
Loads
Other Requirements
Installation
Submittals
Quality Assurance
CERAMIC TILES
6.1
6.2
6.3
Wall and Floor Tiles For Toilets
Wall and Floor Tiles For Battery Room
Installation Of Ceramic Tiles
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 2 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
1.0
78-TMSS-12, Rev. 0
SCOPE
This Transmission Material Standard Specification (TMSS) specifies the minimum
technical requirements for the procurement of the following flooring materials and systems
intended to be used in Saudi Electricity Company (SEC), Saudi Arabia.
2.0
1.
CONCRETE EPOXY FLOOR DUST PROOFER AND HARDENER
2.
RAISED FLOOR SYSTEM
3.
CERAMIC TILES
CROSS REFERENCES
This Material Standard Specification shall be read in conjunction with the latest revision of
SEC General Specification 01-TMSS-01, titled "General Requirements for All
Equipment/Materials" which shall be considered as an integral part of this TMSS.
This TMSS shall also be read in conjunction with SEC Purchase Order or Contract
Schedules for project, as applicable.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 3 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
3.0
78-TMSS-12, Rev. 0
APPLICABLE CODES AND STANDARDS
The latest revision/amendments of the following Codes and Standards shall be applicable
for the materials covered in this TMSS. In case of conflict, the vendor/manufacturer may
propose the materials conforming to one group of Industry Codes and Standards quoted
hereunder without jeopardizing the requirements of this TMSS.
3.1
SSA 1031
Ceramic Tiles
3.2
ASTM E 1907 REV A
Guide to Methods of Evaluating Moisture Conditions
of Concrete Floors to Receive Resilient Floor
Coverings
3.3
BS 6319
Testing of Resin Compositions for Use in Construction
3.4
BS 6431
Ceramic Floor and Wall Tiles
3.5
BS 8203
Code of Practice for Installation of Resilient Floor
Coverings
3.6
NFPA 75
Standard for the Protection of Information Technology
Equipment
3.7
NFPA 99
Standard for Health Care Facilities
3.8
ISO 9001
Quality Management Systems -Requirements
3.9
CISCA/AF
Ceiling and Interior System Construction Association,
Recommended Test Procedures for Access Floors
3.10
ANSI A 10.20
Safety Requirements For Ceramic Tile, Terrazzo, And
Marble Work
3.11
Vaisala Thermohygrometer Type MH 315.
3.12
Tile Council of America (TCA)
78TMSS12R0/SZA
A Handbook for Ceramic Tile Installation
Date of Approval: March 11, 2009
PAGE NO. 4 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
4.0
78-TMSS-12, Rev. 0
CONCRETE EPOXY FLOOR DUST PROOFER AND HARDENER
4.1
Use
This system is to be used for internal flooring in all the SEC Transmission
Substations as specified by SOW/TS which includes switchgear rooms, mechanical
rooms etc.
If this system is specified for external areas exposed to sunlight, such as sidewalks,
platforms etc., it shall be UV (Ultra Violet) resistant and as specified in SOW/TS.
This system shall not be used where raised flooring or Ceramic flooring tiles are
used.
4.2
Composition And General Requirements
The material shall be four-component system consist of binder (epoxy resin),
hardener (magnesium silicoflouride), aggregate and pigment. These components
shall be pre-weighed for site mixing strictly as per the recommendation of the
manufacturer. It shall be acceptable only if the following requirements are satisfied:
4.2.1 It shall chemically react with free lime and calcium salts in hardened
concrete to make it more dense and durable surface.
4.2.2
It shall penetrate concrete surface and make it hard, free from dusting and
high resistant to corrosion and abrasion.
4.2.3
Chemically resistant
Shall resist acids, alkalis, oil and salts.
4.2.4
Durable
Shall have good wear and tear and abrasion resistance.
4.2.5
Hygienic
Shall be Impervious, self-leveling, seamless floor surface which can be easily
cleaned.
4.3
Specific requirements
4.3.1
Nominal thickness shall be 2 mm to 5 mm as specified in SOW/TS. Shall
have smooth and glossy finish and light reflective surface.
4.3.2
Floor hardener shall achieve compressive strength of 50 MPa and flexural
strength of 30 MPa at 7 days when tested to BS6319.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 5 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
78-TMSS-12, Rev. 0
4.3.3 It should be capable of resisting continuous pedestrian traffic and vehicular
traffic including forklifts for 48 hours.
4.4
Surface preparation
4.4.1
General
It is essential that the surface preparation of the concrete is done properly to
obtain optimum performance.
The new concrete shall have completed the curing and drying period as per
TCS-Q-113.03. The moisture content of the concrete should be below 4% by
weight. The factors responsible for the release of surface water like the
thickness of the concrete, the season, the temperate and relative humidity of
the environment and the prevailing ventilation conditions should always be
checked and measured prior to the coating application.
The moisture content at the concrete surface shall be measured using an
instrument called a Protimeter or in accordance with BS 8203 Appendix A or
by a Vaisala thermohygrometer type MHI 31.
The weak top surface layer (laitance) in the concrete floors is to be removed.
4.4.2
Floor Preparation
Proper surface preparation shall be ensured to have good substrate adhesion
and long-term protection of any floor coating.
The following methods to be applied as required;
a.
Removal of chemicals from floor surfaces
The removal of chemicals, oil and grease must be completed before
any other preparation of work commences, such as acid etching,
blasting, etc. Concrete surface that has become contaminated by
chemicals must be neutralized and cleaned as per the manufacturer
before coating. The surface shall be approved prior to application by
the COMPANY REPRESENTATIVE.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 6 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
b.
78-TMSS-12, Rev. 0
Abrasive blast cleaning
Abrasive blast cleaning shall be done for heavy duty flooring
systems, under supervision and approval of COMPANY
REPRESENTATIVE. The work shall be well organised and shall not
affect the adjacent structures or equipments, in case of old/existing
concrete. Blasting shall be done such that it makes the surface of the
floor to the required profile, which will enable the coating to gain a
physical as well as chemical bond to the substrate. Blast cleaning is
the recommended system for large areas.
c.
Scarifying (Scrabbling)
The scarifier uses rotating wheels and brushes to scour the concrete
surface. The scarifier is pushed on the floor and the enclosed rotating
wheels abrade the surface. Care shall be taken not to cause excessive
damage to the substrate. The work shall be done by skilled operator.
This method shall be used for small areas or areas where abrasive
blast cleaning cannot be carried out.
d.
Power grinding
This method can be used to open up holes and voids and to remove
loose materials from the surface of poured concrete and Precast slabs.
Recommended for small external floor areas only.
e.
Wire brushing
This method can be used to remove loose material from the surface
and open up holes and voids in poured concrete. This can be either
power or hand wire brushing.
f.
Impact tools
Poured concrete surfaces can be roughened using impact tools such as
Needle Guns etc. This method shall be considered for small areas.
Granulating or Hammering machines work quicker but should only
be used if flooring screeds are to be applied.
Impact tools are normally electrically or compressed air driven and
work on principal of a sharpened tool vibrating against the surface.
Work shall be done by skilled operator and sufficient supervision to
be done to avoid damage to concrete as well as physical injury.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 7 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
g.
78-TMSS-12, Rev. 0
Acid Etching
This method of surface preparation is recommended for use on
existing/old concrete floors. It is carried out to remove laitance, and
should only be used in areas where sufficient drainage exists to allow
the water and acid solutions to be easily removed. To carry out acid
etching, the following procedures should be followed;
78TMSS12R0/SZA
i.
Before commencing acid etching, the concrete surface should
be cleaned for all loose concrete.
ii.
Deposits of oil and grease should be removed using an
alkaline cleaner or by steam cleaning.
iii.
The floor shall be thoroughly dampened with water
iv.
Sprinkle uniformly over the floor an 8-10% solution of
phosphoric acid in water. The covering rate shall be 0.66 liter/
sq.m.
v.
The acid solution should remain on the surface for 2-4
minutes and then rinsed thoroughly with clean water. The
rinsing can be done with a water hose and sweeping brush.
vi.
It is important that the rinsing operation is carried out
immediately to prevent the formation of salts on the surface,
which are difficult to remove.
vii.
The concrete surface should be checked for acidity using pH
paper and should have a pH of 7 or greater.
viii.
Depending on the concrete type, more than one operation may
be required to achieve a satisfactory surface profile.
ix.
Thorough rinsing with clean water should be carried out after
each etches application. The surface profile should be similar
to fine sandpaper.
x.
The concrete should be allowed to dry prior to applying the
coating.
Date of Approval: March 11, 2009
PAGE NO. 8 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
5.0
78-TMSS-12, Rev. 0
RAISED FLOOR SYSTEM
5.1
Use
Raised floor system shall be used in the communication room and other locations as
specified in SOW/TS.
5.2
General Requirements
Access flooring shall be portable assembly of modular floor panels on an elevated
support system (under structure) forming a complete under floor cavity to
accommodate electrical cables/ communication cables. Panels shall be gravity held
with bolted stringers under structure system. Depth of raised floor system shall be
900 mm for Control and Relay room and 600 mm for Communication Room.
Access flooring shall comply all the test requirements in accordance with "Ceiling
and Interior System Construction Association", Recommended Test Procedures for
Access Floors", "CISCA/AF".
Access floor system shall consist of the Floor Panels, Floor covering, Understructure
5.3
Specific Requirements
5.3.1
Floor Panels
a.
78TMSS12R0/SZA
Floor Panels shall have the following properties:
Panel thickness
33 mm
Standard Module
600 x 600 mm
Concentrated load
3 – 5 KN
Distributed load
Maximum 30 KN/m²
Electrical conductivity
Less than 107 Ohm
Thermal conductivity
Approximately 1.25 W/m °K
Fire rating
Minimum 3 hours
Date of Approval: March 11, 2009
PAGE NO. 9 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
b.
78-TMSS-12, Rev. 0
Deflection and Handling
Floor Panels including those with cutouts capable of supporting
concentrated design loads of 4500 N (1000 lbs.) magnitude with a top
surface deflection under load and as permanent set not to exceed 2.00
mm and 0.25 mm respectively
The panel shall be all steel panel system with steel minimum
thickness 1 mm, welded steel construction and filled with a noncombustible synthetic anhydrite.
Light weight for ease in handling. Approximate weight shall not
exceed 180 N (18 kg).
5.3.2
Floor Covering
Floor covering shall be conductive grade and factory applied high-pressure
laminate (HPL) with following specifications. The laminate should be
bonded using professional fabricating technique and procedure. Adhesive
shall also be conductive.
a.
Dimensions
Floor covering shall have the following requirements:
b.
Nominal minimum thickness
3.2 mm
Nominal size
610 mm x 610 mm
Durability
Floor covering shall be clean, with ease of maintenance, long and
high wear, dust free environment and rigid and with washable
surface.
c.
Electrical Conductivity
The floor shall be conductive for control of static electricity.
Conductive laminate flooring must be properly grounded by utilizing
a variety of terminals and grounded cords properly attached to the
laminate and a suitable earth ground.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 10 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
5.3.3
78-TMSS-12, Rev. 0
Trim
Edge trim shall be used to protect the panel and covering against mechanical
damage and humidity. Trim shall be mechanically attached to perimeter of
each panel to eliminate any potential separation of edge trim with the panel.
Edging will be interlocked with top sheet and fixed by up turned edge of
bottom steel sheet.
5.3.4
Understructure
The under structure shall be bolted stringer system. It consists of pedestal
assembly and stringer system.
Following are the details given about the pedestal assembly and the stringer
system:
Pedestal Assembly: Includes base, column with provision Galvanized and yellow
steel
for height adjustment and head cap made either of steel or passivated
construction
aluminum or aluminum or a combination of both.
Pedestal Assembly shall provide vibration proof mechanism for making and holding
fine adjustments in height for levelling purposes over a range of not less than 2 in.
include means of locking levelling mechanism at a selected height which requires
deliberate action to change height setting and prevents vibratory displacement.
Fixing of pedestal to subfloor
Dowelling
Axial load without as permanent deformation as per
pedestal without panels or other supports
36.30 KN
Overturning moment without as permanent deformation
as per pedestal without panels or other supports
113 N-m
Pedestal head to accept bolted stringer.
Pedestal adjusting rod of minimum 22 mm solid steel threaded stud.
a.
Pedestal Head
Die formed galvanized pedestal head and projection welded stud with
adjustment nut. Head and installed stringers shall provide full as
perimeter edge support.
Stringers to be attached with 1/4" - 20 flat head screws.
Pedestal head shall be tapped for engagement of stringer screws
Gantry lock collar to provide anti-vibration displacement.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 11 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
78-TMSS-12, Rev. 0
Vibration proof leveling nut shall be 22 mm.
Pedestal head shall have gasket for fixing of panels and sound
insulation and electrical conductivity
As perimeter pedestals shall provide support for panels around
columns at walls, and provide details for complete information.
b.
Gasket
The gasket shall be Conductive synthetic with the following
requirements:
Electrical resistance
Approximate 104 Ohm
Gasket shall also serve as a high frequency safety
c.
Pedestal Base
The requirements are as follows:
d.
i.
Base to be at least 400 mm2 and hot-dip galvanized steel
ii.
Pedestal tube shall be 25 mm diameter, galvanized tubing.
Stringers
Stringers should be used with floor height of greater than 500 mm.
These shall be as specified below:
Heavy-duty roll formed, steel stringer shall withstand 2 KN (200
Kgs). mid span Load.
Hot-dip Galvanized stringer construction to prevent corrosion
Stringer shall have factory applied conductive gasket to provide quiet
sound absorbing seal
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 12 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
e.
78-TMSS-12, Rev. 0
Accessories
The various accessories as required are given below:
Cutouts
Ramps
Steps
Railings
Fabricate cutouts in floor panels to accommodate cable penetrations
and source outlets, comply with requirements indicated for size,
shape, number and locations. Provide reinforcement or additional
support, if needed, to make panels with cutouts comply with
standard as performance requirements.
Manufacturer's standard ramp construction of width and slope
indicated, but not steeper than 1 in 12, with non-slip raised disc
rubber or vinyl floor covering and of same materials, as performance
and construction requirements as the access flooring.
Provide steps of size and arrangement indicated with floor covering
to match access flooring. Apply non-slip aluminum nosing to treads
unless otherwise noted.
Manufacturer's standard stain finish extruded aluminum post and rail
system at ramps and open sided as perimeter of access flooring
where indicated, including handrail, intermediate rails, posts,
brackets, end caps, wall returns, wall and floor flanges, plates and
anchorage’s where required. Provide railing that complies with
structural as performance requirements for railing.
Manufacturer’s standard portable lifting device at least two (2)
single and double suction cup type.
Panel
Lifting
Device
Vertical
When under floor cavity is not enclosed by abutting walls, column,
Closures beams or downward slabs, provide manufacturer's standard plates
(Fascia)
with factory-applied finish.
Fit cutouts with manufacturer's standard grommets in sizes indicated or where
size of cutouts exceeds maximum grommet size available, trip edge of cutouts
with manufacturer's standard plastic molding having tapered top flange. Furnish
removable covers for grommets.
Provide foam rubber pads for sealing annular space formed in cutouts by cables
and trim edge of cutout with molding having flanged and edge for capturing and
supporting pads.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 13 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
5.4
78-TMSS-12, Rev. 0
Loads
The loading system shall be as under:
TYPE OF LOAD
Ultimate
Concentrated Load
without Failure
Ultimate Uniform
Loads without Failure
Rolling loads
Impact Load:
5.5
DESCRIPTION
Ultimate concentrated load shall not be less than the value
obtained from multiplying the factor indicated below by the
specified concentrated design load on floor panels. Failure is
defined as the point at which access- flooring system will not
take any additional load.
Factor:
3.0
Design Concentrated Load: 5 KN
Ultimate Uniform Loads without Failure: Ultimate uniform
load shall not be less than the value obtained from
multiplying the factor indicated below by the specified
uniform design load on floor panels. Failure is defined as the
point at which access-flooring system will not take any
additional level.
Factor: 3.0
Design Uniform Load: 25 KN/m2
Rolling loads as noted below applied to panels through
CISCA/FA wheel with combination of local and overall
deformation not to exceed 1mm measured across panels 610
mm span and an as permanent set not to exceed 1mm after
exposure to rolling load as per CISCA/AF path A or B
whichever path produces the greatest top surface
deformation.
10 Passes of Wheel Load for path A: 4500 N (1,000 lbs)
10,000 Passes of Wheel Load for path B: 4500 N (1,000 lbs)
A load of 670 N (150 lbs) shall be dropped 915 mm into an
inch square indenter, there shall be no system failure.
Other requirements
Electrical Resistance of Systems
Provide access-flooring system with the following electrical resistance
characteristics: Less than 1 ohm measured across surface of bare panel to under
structure by test method as specified in NFPA 99.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 14 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
5.6
78-TMSS-12, Rev. 0
Installation
Installation shall be done by highly skilled personnel. The following steps shall act
as guide for installation. The installation shall be done carefully and approval shall
be obtained from COMPANY REPRESENTATIVE.
5.7
5.6.1
Install access floor system and accessories under supervision of the access
flooring manufacturer's authorized representative to ensure rigid, firm
installation free of vibration, rocking, rattle, squeaks and other unacceptable
as performance.
5.6.2
Set pedestals in adhesives to provide full bearing of the pedestal base on the
sub-floor
5.6.3
Layout floor panel installation to keep the number of cut panels at the floor
as perimeter to a minimum. Scribe panel assemblies at as perimeter to
provide a close fit with no voids greater than 3.2 mm where panels abut
vertical surfaces.
5.6.4
Secure grid members to pedestal heads in accordance with access floor
manufacturer's instructions.
5.6.5
Thoroughly clean up dust, dirt and construction debris caused by floor
installations including vacuuming the sub-floor area as installation of floor
panels proceeds. Extend cleaning under installed panel as far as possible.
5.6.6
Cutting and trimming or other dirt or debris producing operations will not be
as permitted in the rooms where the floor is being installed.
5.6.7
Level installed access floor to within 1.5 mm of true level over the entire area
and within 2.5 mm in 3.0 m length.
Submittals
Following details shall be submitted to the SEC for approval. No work shall be
started prior to approval.
5.7.1
Product data for each type of access flooring.
5.7.2
Shop drawings indicating complete layout of access flooring based on the
field verified dimensions, including details with descriptive notes indicating
materials, finishes, fasteners, typical and special edge conditions, accessories,
under structure and other data to as permit a full evaluation of entire access
flooring system.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 15 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
5.8
78-TMSS-12, Rev. 0
5.7.3
Samples for initial selection purposes in the form of manufacturer charts
consisting of actual units or sections of units showing full range of colors,
textures and patterns available for each type of floor covering and exposed
finish indicated.
5.7.4
Samples (2 sets) for verification purposes in full size units of each type of
floor covering and exposed finish indicated.
Quality Assurance
To ensure good Quality control/Quality assurance, following guidelines shall be
followed:
5.8.1
Engage an experience installation that is approved by the access-flooring
manufacturer for installation of the types of access flooring required for the
project.
5.8.2
Provide access flooring complying with NFPA 75 requirements for raised
flooring.
5.8.3
Flooring shall be obtained from a single manufacturer once the system is
approved.
5.8.4
Coordinate location of electrical WORK in under floor cavity to prevent
interference with access flooring pedestals.
5.8.5
Access floor system shall be guaranteed by a quality management system
according to ISO 9001.
5.8.6
Environmental Condition: do not proceed with installation of access flooring
until installation area is enclosed and has an ambient temperature of between
55°F and 90°F and a relative humidity of not more than 70%.
5.8.7
Deliver access-flooring components in original unopened packages, clearly
labeled with manufacturer's name and item description.
5.8.8
Handle and store packages containing access flooring in a manner that avoids
overloading building structure.
5.8.9 Do not proceed with installation of access flooring until after substantial
completion of other as performable construction within affected spaces.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 16 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
6.0
78-TMSS-12, Rev. 0
CERAMIC TILES
This section of the Transmission Material Specification Standard (TMSS) specifies the
minimum technical requirements for the procurement of the Ceramic flooring materials and
systems intended to be used in Saudi Electricity Company (SEC), Saudi Arabia.
6.1
Wall and Floor Tiles for Toilet
6.1.1
Wall tiles
These tiles shall be glazed and shall have the following requirements
6.1.2
Size:
150 mm x 150 mm
Thickness:
7 mm
Color:
Off-White
Floor tiles
These shall be unglazed and shall have the following requirements
6.2
Size:
150 mm x 150 mm
Thickness:
9 mm
Color:
Off-White
Wall and Floor Tiles for Battery room
6.2.1
Wall tiles
These shall be glazed, and shall have the following requirements
78TMSS12R0/SZA
Size:
150 mm x 150 mm
Thickness
7 mm thick
Color
Ivory
Date of Approval: March 11, 2009
PAGE NO. 17 OF 18
TRANSMISSION MATERIALS STANDARD SPECIFICATION
6.2.2
78-TMSS-12, Rev. 0
Floor tiles
These shall be unglazed and shall have the following requirements:
Size
150 mm x 150 mm
Thickness
9 mm
Color
Dove Gray.
The tiles shall comply with SSA 1031, BS6431& ANSI with following
technical specifications:
Typical Value
Property
Wall
Floor
Flatness Deviation
±0.50%
±0.50%
Water absorption
Coefficient of linear
thermal expansion
14%-16%
3% –6%
Less than 9 x 10-6 / K
Less than 9 x 10-6 / K
Hardness –Mohs scale
Less than 3
5 – 8
Modulus of Rupture
Greater than 20 MPa
Greater than 30 MPa
Acid/Alkali resistance
Resistant
Resistant
Crazing Resistance
Resistant
Resistant
Size Deviation
±0.50%
±0.50%
Thickness Deviation
±5%
±5%
Abrasion resistance
Not required
Class 2-5
Inside angle bead, inside elephant, inside corner, inside cover tile shall be provided
for complete tile installation.
6.3
Installation of Ceramic Tiles
Ceramic tile installation shall be as per TCA Handbook for Ceramic Tile Installation
and drawings as specified in SOW/TS.
78TMSS12R0/SZA
Date of Approval: March 11, 2009
PAGE NO. 18 OF 18