Tender, Tender, Uganda, GHG Road Construction, Mechanized
Grading Mechanize Road Opening (MRO)
Scope of Work (SOW)
Background
Karamoja is one of the poorest and least developed regions in Uganda with an estimated
poverty rate of around 84 percent. The region was previously characterized by conflict and
insecurity contributing to widespread food insecurity and high levels of malnutrition, as
cattle raids for the last 20 years frustrated the region’s growth. Though security has greatly
improved in the past two years, partly as a result of the Government of Uganda’s
disarmament campaign, the continued presence of sporadic cattle raids speaks to the need
for a long-term solution that deters would-be raiders and aids in the identification of raided
animals during sale.
Mercy Corps Uganda has been operational in Karamoja since 2009, focusing on support for
food security, infrastructure development, market development and peace building. In
2012, Mercy Corp was awarded a new 5-year USAID-funded program, called, Growth,
Health and Governance (GHG). As part of this program, Mercy Corps, in consultation with
the community, planned to construct a road, so as to ease movement within Karamoja. The
road to be constructed is from Kacheri to Lobalangit, and has a total length of 36 km. The
objective of this Mechanize Road Opening is to link in trade centers, peace building, health
centers, sub-counties and nearby towns to the road network.
This SOW describes the tasks/specifications to be conducted by the contractor.
Specific Tasks and Specifications Include:
Bill 1 Site Preparatory Works
ITEM 1.1 Construction of access roads to quarry sites, including maintenance
throughout the working period
Bill 2 Setting Out and Site Clearing Works
ITEM 2.1 Clear site of all grass, bushes, trees, and boulders (up to 1.5M maximum
girth) and grub all roots of grass and bushes, including excavation of top soil from
the formation
ITEM 2.2 (Re)-Establishment of road alignment and setting out of road work
ITEM 2.3 Cut and removal of trees from site
Bill 3 Earth Works
ITEM 3.1 Construction of new road
ITEM 3.2 Rehabilitating existing road formation
ITEM 3.3 Reshaping of existing road formation, including watering and compaction
ITEM 3.4 Opening of side, mitre, catch water, and specified drains
ITEM 3.5 Provision of fill materials
1
ITEM 3.5.1 Preparation of borrow pit(s), consisting of clearing vegetation
and removal of topsoil
ITEM 3.5.2 Excavation, hauling, placing, watering, and compaction of approved fill
material in embankment and low spots, using gravel to create a level road bench
Bill 4 Drainage Works
ITEM 4:1 Provide and install scour checks
ITEM 4.2 Excavation of foundation for drainage structure
ITEM 4.3 Supply and install concrete culvert pipe rings
ITEM 4.4 Demolish existing structure and cart away debris
ITEM 4.5 Provide materials and build cement-bound masonry work
ITEM 4.6 Provide stone, and build dry-stone masonry work
ITEM 4.7 Provide, erect, and remove formwork for concrete
ITEM 4.8 Provide and fix steel reinforcement
ITEM 4.9 Provide, place, and compact hardcore foundation layer for structure
ITEM 4.10 Provide cast, and cure concrete in class
ITEM 4.11 Provide gabion baskets and stones, place and fill baskets
ITEM 4.12 Provide stone pitching to planned approaches and drift and fill baskets
ITEM 4.13 Provide selected materials and backfill structures
Bill 5 Gravelling and Completion
ITEM 5.1 Preparation of quarry site(s) consisting of clearing vegetation and
removing top soil
ITEM 5.2 Excavate gravel, remove boulder, stockpile, load, haul, offload, spread,
water, and compact
ITEM 5.3 Restoration of site(s), quarries and borrow pits
Bill 6 Preliminary and General Items
ITEM 6.1 Mobilization and demobilization
ITEM 6.2 Insurance and bonds
ITEM 6.3 Traffic accommodation
ITEM 6.4 Bill boards
ITEM 6.5 Maintenance of the whole the Works.
ITEM 6.6 Supervision of the Works
ITEM 6.7 Site meeting.
Deliverables
Time Frame
The primary assignment will take place during months of April 2015 to July 2015, with a
180 day follow-on (guarantee) period to identify additional defects (projected for October
2015). Repair of final defects will then be completed by the contractor within 30 days of
receiving the final defect report (projected November 2015). The final completion report
shall be given to the contractor when all defects are remedied, thereby releasing the final
retention payment.
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Supervision and Reporting
The contractor shall report directly to the GHG Chief of Party through the Program
Engineer on matters of progress and completion of the contract. The District Engineer shall
also be involved in approving the quality of the work.
Responsibilities of Mercy Corps
1. Advertising and awarding of contract to contractor.
2. Routine monitoring and supervision of work according to work schedule and scope
of work.
3. Support contractor to lead them to district technical offices and political office e.g.
RDC, LC 5 CAO etc.
Qualifications and Experience of Company
Mercy Corps will select a contractor with the following qualifications:
 Registered legal company in Uganda with full necessary documentation/licenses
and is tax compliant.
 Company with competent experience.
 Company with knowledge of Karamoja soil and work environment
 Company with relevant office location(s) to conduct specified work in Karamoja
 Company with adequate financial management systems, human resources, and
operational capacity to effectively conduct the specified work within the timeframe
and quality standards stated.
Bill of Quantities
Bill of Quantities (BOQ) for this specified work is provided as Annex 1 of the Tender
Application document that must be prepared and completed by all bidders and submitted
as part of the application.
Site Visit
All bidders are required to carry out a site visit to the location of intended road work. A
site visit form is provided as Annex 3 of the Tender application document that must be
completed, stamped and signed by local authority of the sites, and submitted along with the
tender application.
Drawings
Drawings relating to this SOW and BOQ are provided as Annex 2 & 2.1 of the Tender
application document.
Abbreviations
MBC: Measured Before Construction
MAP: Measurement in area perimeter
AWD: Actual Work Done
BOQ: Bill of Quantities
3
BILL 1:
SITE PREPARATORY WORKS
ITEM 1.1 Constructing of access roads to quarry sites including maintenance
throughout the working period
DESCRIPTION:
A. Access to roads shall be opened in areas where quarries, approved by Engineer for
materials including surfacing aggregate, selected filled and other are located away
from the road to facilitate the ease of movement for haulage equipment from the site
(s) of the works to the quarry site (s).
B. The access roads their routes and alignment shall be approved by the Engineer.
C. Where such access cross community owned land/ private property, agreement for
the access roads
D. Shall be obtained from the local authorities/ owners by the contractor and confirm
in writing by
E. The Engineer.
F. In the case of supply of required construction materials (gravel, hardcore, culvert
etc) to make the access roads passable, the rate quoted for these items by the
contractor shall be full compensation for all activities performed under this item.
WORK METHOD:
 The contractor may choose Labour, Equipment or a combination of both to carry out
this item depending on the degree of difficulty of the work.
 The item consists of the following activities
 Setting out ( alignment and width)
 Clearing (Bushes, grass, and trees as required )
QUALITY CONTROL
 Allow for easy and undisturbed hauling.
 No test required.
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
1.1
Constructing of access roads to quarry sites
including maintenance throughout the
Working period
Unit of
Measurement
Lump sum
Method of
Measurement
MBC
Payment: The Engineer shall effect payment for these items in proportion to the total
value of the works performed at the time of preparation of the next payment certificate and
following completion of the access roads and upon approval of the works.
BILL 2:
SETTING OUT AND SITE CLEARING WORKS
ITEM 2.1 Clear site of all grass, bushes, trees, and boulder (up to 1.5M maximum
girth) and grub all roots of grass and bushes including excavation of top
soil from the formation
4
DESCRIPTION:
A. This item consist of
 Bush clearing, according to BOQ
 Grubbing, according to BOQ
 Boulder removal up to 1.5 m
 Excavation of top soil including anthills and other unsuitable materials and
depositing in approval location
B. The above material shall be deposited well outside the cleared area approved by the
Engineer.
C. In side- long ground, the above material shall be deposited well outside the cleared
area on the lower (valley) side of the road.
D. Burning of the cut grass and grubs shall only be allowed if approved by the Engineer
in writing (written permission must be sought in advance of any burning
activities).
WORK METHOD:
 The contractor shall apply labour method of work for this item.
 The item consist of cutting the vegetation, digging out the roots, excavating the top
soil, loading in to wheelbarrow all material and other surface litter, hauling and
deposing the same away from drains and the cleared area.
 Boulders with a maximum girth of not more than 1.5 M can be loaded in to wheel
borrow and deposited outside the cleared. In case where structures and scour check
are to be constructed using rubble stone, the contractor is advised to stockpile
boulder neatly so that these stone may be available for use.
QUALITY CONTROL
 Cleared areas to be free of organic materials and boulder as specified and all work to
be checked by the Engineer.
MEASUREMENT AND PAYMENT
Pay Item Description
No.
2.1
Clear site of all grass, bushes, and boulder
(up to 1.5M maximum girth) and grub all
roots of grass and bushes including
excavation of top soil from the formation
Unit of
Measurement
Linear metre
(M) of the
road length
Method of
Measurement
AWD
Payment: The Engineer will effect payment of any cleared road length in the following
payment certificate upon approval of works.
5
BILL 2:
SETTING OUT AND SITE CLEARING WORKS
ITEM 2.2 (Re) Establishment of road alignment and setting out of road work.
DESCRIPTION:
A. This item consists of the setting out of the geometric of the centre line of the road at
10 M intervals, by using appropriate method.
B. Chainage reference pegs shall be placed at 20 metre interval at both edges of the
area to be cleared from bush.
C. This item consists of setting out working and material deposit and disposal areas for
all activities as described in the BOQ.
D. This item consists of setting out of the alignment, dimension, and levels for the
drainage structure.
WORK METHOD:
 The contractor will supply labour method of work for this item,
 Setting out shall be done using simple measuring aids, including tape measure,
ranging rods line and level, strings and pegs, template and profile boards.
 The contractor shall use the drawing provided by the Employer and the reference
points, lines and level provided by the Engineer to determine the location of the
road centre and measures related to structural works.
QUALITY CONTROL
 Centre line pegs set at 10 metre interval – to be approved by the Engineer.
 Chainage reference pegs set and marked at 20 metre intervals on both side of the
road way 1 metre outside the clearing width – to check by the Engineer.
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
2.2
(Re) Establishment of road alignment and
setting out of road work.
Unit of
Measurement
Linear
metre(m) of
the road
length
Method of
Measurement
AWD
Payment: The Engineer shall effect payment for these items in proportion to the total
value of the works performed at the time of preparation of the next payment certificate and
following completion of the access roads and upon approval of the works.
BILL 2:
SETTING OUT AND SITE CLEARING WORKS
ITEMS 2.3 Cut and remove form site trees (up to 1 m girth), including removal of
stumps and roots
DESCRIPTION:
 The item includes the felling of the trees up to 1 m girth within previously cleared
areas including removal of their stumps.
 The girth measurement shall be taken 1 m above the ground.
 The cut material shall be deposited well outside the cleared area at location
6
approved by the Engineer.
 Burning of the felled trees and tree cutting shall only be allowed if explicitly
approved by the Engineer.
WORK METHOD:

The contractor may choose to use Labour, Equipment or a combination of both to
carry out this item depending on the degree of difficulty of the work.
 Trees may be cut using hand saw, bow saw, axe, or chain saw.
 Care must be taken when felling trees, unauthorized persons shall not be allowed
within the vicinity of the site.
 Timber from trees can be loaded in to wheelbarrow and deposited well outside the
cleared area.
 Timber from the cut trees may be scour check, setting out pegs and for the
construction of water barriers and deviations.
QUALITY CONTROL
 Cleared areas to be free from trees as specified 2.3 above and checked by the
Engineer.
MEASUREMENT AND PAYMENT
Pay Item
No.
2.3
Description
Cut and remove form site trees (up to 1 m
girth), including removal of stamps and
roots
Unit of
Measurement
Number (No.)
of trees
Method of
Measurement
MBC
Payment: The Engineer will effect payment for the actual number of trees felled and
cleared for any cleared road length in the following payment certificate upon approval of
the works.
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BILL 3: EARTH WORKS
Item 3.1 Opening the construction (new roads construction)
Item 3.2 Rehabilitation of existing road formation
Item 3.3 Reshaping of existing road formation including watering and compaction
DESCRIPTION:
A. Item 3.1 shall be applied to new construction of road. Items 3.2 and 3.3 shall be
applied when the existing road requires reshaping only, not to disturb the existing
formation.
B. The cross –section and measurements to be applied shall be in accordance with the
design standard as specified in the Drawings for this this contract and as instructed
by the Engineer.
C. Fill materials required for camber formation shall be taken from the side drains, if
suitable and approved by Engineer. Widening or deepening of the side drains may
be required to obtain sufficient material.
D. Compaction shall be carried out with a self-propelled roller with approved total
weight and dimension. A minimum of 6 (six) passes for compaction shall be applied.
The fill layers to be compacted shall not exceed 15 cm loose and the soil shall be
watered before compaction take place.
E. The camber of the compacted formation shall have a cross fall of no less 8% and
maximum tolerance of +/- 1% when checked with a chamber board.
WORK METHOD:
 The contractor may choose Labour, Equipment or a combination of both. to carry
out this item depending on the degree of difficulty of the works. Compaction,
however, shall be carried out using approved compaction Equipment.
 Using Equipment for opening a new road/ reshaping
 Scarifying of new road formation to a minimum depth of 100cm with grader (
towed or self-propelled)
 Add extra fill material borrow from the side drains as required
 Spreading to require levels and camber cross fall with grader.
 Watering
 Compacting the formation with self-propelled roller.
QUALITY CONTROL
 Visual inspection of all of these works and their approval by the Engineer are
required to ensure full quality standard of carriageway, camber compaction and
side drains and off shoot are in place.
MEASUREMENT AND PAYMENT
Pay Item
Description
Unit of
No.
Measurement
3.1, 3.2,
Opening the construction (new roads
Linear metre
3.3
construction, Rehabilitation of existing road
formation, Reshaping of existing road
formation including watering and
compaction
8
Method of
Measurement
AWD
Payment: The Engineer shall effect payment for these items in proportion to the total
value of the works performed at the time of preparation of the next payment certificate and
following completion of the access roads and upon approval of the works.
BILL 3 EARTH WORKS
ITEM 3.4 Rehabilitation of the existing road formation.
Item 3.5 Opening of side, mitre, catch water and specified drains
DESCRIPTION:
A. This item shall be applied when the existing road formation requires reshaping only,
not new road.
B. The item includes opening and re-excavation of the side drain, mitre drains, catch
water drain and specified drains
C. The measurement to be applied shall be in accordance with the design standards
instructed by the engineer.
WORK METHOD:
 The contractor shall apply labour methed or machine for new road.
 The item consists of the following labour activities.
 Opening / re-excavation of the side drains,
 Shaping of the back slopes
 Opening of mitre drains may as instructed by the Engineer to the correct
dimension and gradient, opening catch water drains.
 All excavation material to be deposited on the lower side drains.
QUALITY CONTROL
 Quality control test for this item shall be carried out together with the test required
for drain dimensions.
 Visual inspection of all of these works and their approved by the Engineer are
required to ensure full construction of the drainage system.
MEASUREMENT AND PAYMENT
Pay Item Description
No.
3.4, 3.5
Opening of side, mitre, catch water and
specified drains
Unit of
Measurement
Linear metre
(M) of drains
Method of
Measurement
AWD
Payment: The Engineer will effect payment of any cleared road length in the following
payment certificate upon approval of works.
9
BILL 3:
EARTH WORKS
ITEMS 3.6 Provision of fill materials.
Items 3.6.1 Preparation of borrow pit(s) consisting of clearing from vegetation and
removing topsoil.
DESCRIPTION:
A. The Engineer shall approve quarries and their extent of exploitation.
B. The contractor shall carry out respective negotiations with the land owners and
communities.
C. Before gravel can be excavated, quarry areas and adjacent where topsoils will be
stockpiled have to cleared from all vegetation. Topsoil has to removed and
deposited in order to use it again to reinstate the quarry at the end of work.
D. The items consist of removing vegetation, crops, roots, stumps, trees boulder etc.
from the gravel excavation area and topsoil (overburden) to deposit area as shown
in the drawing and/or as directed by the Engineer. Waste materials shall be dumped
at places approved by the Engineer.
E. The item also consists of excavation of top soil (overburden) including loading,
hauling and stockpiling at approved location(s).
WORK METHOD:
 The contractor may choose Labour, Equipment or combination of both to carry out
this item depending on the degree of difficulty of the works.
 The work for this item may be carried out consisting of the following: Remove fences and structures from quarry and topsoil deposit areas.
 Cut grasses and bushes
 Cut trees and remove stamps
 Grub roots
 Haul deposit cut vegetation and debris outside the cleared areas at approved
locations.
 Burn deposit materials if approved by the Engineer, excavated topsoil layer
 Load topsoil and haul to approved stockpile locations
 Stockpile neatly so that it can be reused for reinstatement of the quarry.
QUALITY CONTROL
Test
Dimensions (cleared quarry
area)
Method
Tape
Frequency
All
MEASUREMENT AND PAYMENT
Pay Item Description
No.
3.6.1
Excavation, hauling, Placing, Watering and
compaction in layers not exceeding 150mm
thick.
Tolerance
+200/- 200 mm
Unit of
Measurement
Square Metre
(M2) – of
clearing
quarry.
Method of
Measurement
AWD
Payment: The Engineer will effect payment of any cleared road length in the following
10
payment certificate upon approval of works.
BILL 3:
EARTH WORKS
ITEMS 3.6 Provision of fill materials.
Items 3.6.2 Excavation, hauling, placing, watering, and compaction of approved fill
material in embankment, and low spots gravel to create a level road bench.
DESCRIPTION:
A. This shall be applied where an embankment, spot gravel has to be constructed to
achieved the desired road formation level. The works shall be carried out to detailed
B. The item include the excavation of the fill material from approved borrow areas.
Loading and hauling, filling, gravelling in layer not exceeding 15 cm (150mm) loose,
watering and compacting
C. The measurement to be applied shall be in accordance with the design standard as
specified in the drawing.
WORK METHOD:
 The contractor may choose Labour, Equipment or combination of both to carry out
this item depending on the degree of difficulty of the works.
 The work for this item may be carried out consisting of the following: Remove fences and structures from quarry and topsoil deposit areas.
 Cut grasses and bushes
 Cut trees and remove stamps
 Grub roots
 Haul deposit cut vegetation and debris outside the cleared areas at approved
locations.
 Burn deposit materials if approved by the Engineer, excavated topsoil layer
 Load topsoil and haul to approved stockpile locations
 Stockpile neatly so that it can be reused for reinstatement of the quarry.
QUALITY CONTROL
Test
Dimensions (cleared quarry
area)
Method
Tape
Frequency
All
MEASUREMENT AND PAYMENT
Pay Item Description
No.
3.6.2
Preparation of quarry site consisting of
clearing vegetation and removing topsoil.
Tolerance
+200/- 200 mm
Unit of
Measurement
Square Metre
(M2) – of
clearing
quarry.
Method of
Measurement
AWD
Payment: The Engineer will effect payment of any cleared road length in the following
payment certificate upon approval of works.
11
Bill 4:
DRAINAGE WORK
ITEM 4:1 Provide and install scour checks
ITEM 4:1.1 Using stone
ITEM 4.1.2 Using sticks
DESCRIPTION:
A. Where longitudinal drain gradient exceed 4%, what flow at a speed that can cause
erosion. Scour check are small dams or step in the drain, which reduce the velocity
of the water flow.
B. The work shall be carriage out as detail in the Boqs.
C. Scour check are built using either stone or stick as instructed by the Engineer.
D. Intervals at which scour check are constructed depends on the gradient of the drain.
Gradient of road
4% or less
5%
6% 7% 8%
9% 10% >10%
Scour check spacing
No required 20m 15m 10m 7.5m 6m 6m
4m
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 Constructing the scours check using stone consist of:- Collect stone od adequate size and haul to site,
- Stone to be minimum of 20kg weight
- Excavate foundation trench and apron bottom
- Place stones backfill and compact with hand rammer or sledgehammer using
scour check template for correct shape.
 Constructing of scour check using sticks consist of:
- Cut stick of adequate size and timber quality and haul to site
- Sticks to have minimum diameter of 5 cm and minimum 40 cm length,
- Excavate apron bottom
- Ram sticks in to ground using a sledgehammer. Using scour check template for
correct shape.
QUALITY CONTROL
Test
Method
Spacing of scour Tape
checks
Shape
Template
Frequency
All
Tolerance
+/- 20 cm
All
-
MEASUREMENT AND PAYMENT
Pay Item
Description
Unit of
Method of
No.
Measurement Measurement
4.1.1
Provide and install scour check using
Number (No)- AWD
4.1.2
stones
of checks
Provide and install scour checks using
sticks
Payment: The Engineer shall effect payment for number of scour check installed in the
following payment certificate upon approval of the works.
12
Bill 4:
DRAINAGE WORK
ITEM 4:2 Excavation of foundation for the drainage structure.
Item 4.2.1 In soil not more than 1 m deep
ITEM 4.2.2
In soil more than 1 m deep
DESCRIPTION:
A. This item consist of excavating foundation trenches for culvert head and wing walls
other minor structure, retaining walling and gabion
B. The depth and with of the excavation shall be carried out as specified in the drawing
or as directed by the Engineer.
C. The bottom of the excavation shall be hand finished to provide a uniform and
smooth footing.
D. The excavated material shall be deposited well outside the trenches and spoil
material shall be deposit as and were directed by the Engineer. The excavated
material may, where suitable, be utilized for backfilling as approved by the
Engineer.
E. Suitable and effective drainage shall be provided for foundation trenches to prevent
ingress of water in the excavations and to keep the trenches dry.
F. No work shall be paid before the excavation dimension, depth and finishing has
been approved by Engineer.
G. The contractor shall take necessary precaution to safe guard the stability and safety
of excavation
WORK METHOD:
 The Contractor shall apply Labour, equipment or combination of both to carry out
item depending on the degree of difficulty of the work.
 The work for this item may be carried out consisting of the following activities.
- Set out trenches width and length
- Excavated using labour or equipment and deposited material well out side
- In case of spoil, haul material, to approve dumping location.
- Hand finished excavation to the required levels dimension.
- Provide drainage for trenches if required to keep the dry.
QUALITY CONTROL
Test
Dimensions
Trench bottom level
uniformity
Method
Tape
Line level straight edge spirit
level
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
Excavation of foundation for drainage
4.2.1
structure
4.2.2
In soil not more than 1 M deep
In soil more than 1 M
13
Frequency
all
all
Unit of
Measurement
Cubic metre
(m3)- - of
excavation
Tolerance
+/-50 mm
+/-10 mm
Method of
Measurement
AWD
Bill 4:
DRAINAGE WORK
ITEM 4:3
Supplies and install steel culvert pipe rings.
ITEM 4:3.1 600 mm diameter
ITEM 4.3.2 900 mm diameters.
ITEM 4.3.3 1200 mm diameter
ITEM 4.3.4 > 1200 mm diameter
DESCRIPTION:
A. The culvert is the cross drain built under the road and it function is to lead water
from upper to the lower side of the road.
B. This item consists of supply the concrete/steel culvert pipe rings, excavating the
trench including inlet and outlet, laying and joining the rings, backfilling the
trenches and if required, constructing a ramp over the culvert.
C. Culvert head and wing walls out apron are not included in this item but are covered
in items 4.5 and 4.6
D. The culvert pipe shall be of concrete/steel. The Engineer shall approve the type of
concrete/steel culvert pipe rings and supplies. A sample culvert may be provided
prior to the commencement of work for approval by the engineer.
E. The culvert gradient including the outlet shall be minimum of 2%.
F. Backfilling shall be down with the approved materials and compacting of layer not
exceeding 15 cm loose.
G. The ramp shall be shape to achieve a minimum over fill of 3/4of the pipe diameter.
H. The disposal of the surplus material shall be done at locations approved by the
Engineer.
I. On the high traffic road, excavation of trench and lying of pipe ring shall be carried
out in stage to allow vehicle to pass. Installation work has to start from the outlet
side, adequate signs shall be provided.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item
 The work for item may be carried out consisting of the following activities.
- Supply concrete culvert pipe rings
- Excavated inlet and out with minimum 2% gradient-establish level,
- Shape culvert bed
- Place pipe rings and join them.
- Build head, wing wall and apron 4.5 and 4.6 as specified in the drawing
- Backfill and compact in layer not exceeding 15 cm loose
- Shape ramp over culvert.
QUALITY CONTROL
Test
Method
Frequency
Tolerance
Culvert length
Tape
all
+/- 10 mm
Inlet level
Line level, bonding rod
all
+/-10mm
Gradient
Line Level, bonding rods
all
+/-1%
Concrete pipe ringVisual
all
assembly including
correct use ring.
14
MEASUREMENT AND PAYMENT
Pay Item
Description
Unit of
Method of
No.
Measurement Measurement
4.3.1
Supply and install concrete culvert pipe
Linear metre AWD
4.3.2
rings:
(m)- of
4.3.3
600 mm diameter
culvert pipe
4.3.4
900 mm diameter
1200 mm diameter
>1200 mm diameter
Payment: The Engineer will effect payment of completed culvert lines in the following
payment certificate upon approval of the works.
Bill 4:
DRAINAGE WORK
ITEM 4:4 Demolish existing structure and cart away debris
DESCRIPTION:
A. This item consist of demolishing existing structures or part of structures as directed
by the Engineer, and carting away the debris.
B. Stone or concrete block of good quality from the demolished structures may be reused for new structure work.
C. The debris shall be dump at a place approved by the Engineer.
WORK METHOD:
 The Contractor may choose Labour, Equipment or combination of both to carry out
this item depending on the degree of difficulty of work.
 This item consisting of:
- Demolish the existing structure. Either using labour or equipment
- separating the good stone or concrete block from the debris to be re used on the
new structure work
- Loading of debris and hauling to approve dumping location.
QUALITY CONTROL
 Demolishing work and dumping as instructed.
 Were the structure is to be place with new structure, the equivalent volume of
excavation perform in this item shall be taken in to account when determine the
unit rate for 4.3 and 4.4.
 Where the demolished structure is not to be replaced, the equivalent volume of
excavation performed in this item shall be filled in accordance with item 3.3.
MEASUREMENT AND PAYMENT
Pay Item
Description
Unit of
Method of
No.
Measurement Measurement
4.4
Demolishing of the existing structures and
Lump sum
MBC
cart away debris
Payment: The Engineer shall effect payment of demolished structure or structures part as
Lump sum in the following payment certificate upon approval of the works.
15
Bill 4:
DRAINAGE WORK
ITEM 4:5 Provide material and build cement bound masonry work in:
ITEM 4:5.1 Stones
ITEM 4.5.2 Concrete block
DESCRIPTION:
A. This item consists of providing all required material, including cement, sand, stones,
or concrete block, and building cement bound masonry wall and apron as specified
in the drawing and directed by the Engineer;
B. The workmanship shall be in accordance with 4.3
C. The mortar mix shall be 1:4.
D. Joints do not required pointing but must be trowel off flush the surface.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 The work for this item may be carried out consisting of the following activities.
- Supply sand and cement,
- Collect stone of minimum of 20kg weight and of good quality or concrete block
as required by the drawing or as directed by the Engineer.
- Mix mortar of mix 1:4
- Build masonry wall or apron as per the drawing and or as directed by the
Engineer.
- Protect completed work from the direct sunshine for at least 14 days and keep
wall crowns and apron wet for 7 days.
QUALITY CONTROL
Test
Dimension
Level
Mortared joints to be
fully filled
Method
Tape
Line level, straight edge and
spirit level
Visual
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.5.1
Provide material and built cement bound
4.5.2
masonry work in stones and concretes
block
Frequency
All
All
Tolerance
+/- 0 mm
+/-10 mm
All
-
Unit of
Measurement
Cubic metre
(m3)- of
masonry
work
Method of
Measurement
AWD/MAP
Payment: The Engineer shall effect payment of completed masonry work of any completed
structure in the following payment certificate upon approval of the works.
16
Bill 4:
DRAINAGE WORK
ITEM 4:6 Provide stone and build dry stone masonry work
DESCRIPTION:
A. This item consist of providing good quality stone and building dry stone masonry
wall as specified in the drawing and directed by the Engineer.
B. The workmanship for head and wing wall and aprons shall be in accordance 4.3
C. The workmanship for retaining wall shall be in accordance the drawing and as
directed by the Engineer.
D. The bonding shall allow a minimum overlap of ¼ stone lengths. The biggest stone
shall be in the bottom layer of the wall.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 The work for this item may be carried out consisting of the following activities.
- Collect stones of minimum 20kg weight and of good quality as required by the
drawing or as directed by the Engineer.
- Build masonry wall as per the drawing and/ or as directed by the Engineer.
- Backfill in layer where never one course of stone has been placed.
- If instructed provide the wall with a cement mortar crown.
- Protect completed work from the direct sunshine for at least 14 days and keep
wall crowns and apron wet for 7 days.
QUALITY CONTROL
Test
Dimension
Level
Method
Tape
Line level, straight edge and
spirit level
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.6
Provide stone and build dry masonry wall.
Frequency
all
all
Unit of
Measurement
Cubic metre
(m3)- of
masonry
work
Tolerance
+/- 0 mm
+/-10 mm
Method of
Measurement
AWD/MAP
Payment: The Engineer shall effect payment of completed masonry work of any completed
structure in the following payment certificate upon approval of the works.
17
Bill 4:
DRAINAGE WORK
ITEM 4:7 Provide, erect and remove formwork for concrete
DESCRIPTION:
A. Formwork will be requiring for concrete work of structures as specified in the
drawings. False work shall be part of the formwork in case were this is required e.g.
box culvert slab or decks for small bridges.
B. The term consists of providing all materials for formwork and false work, erecting
the false work and formwork and after curing of concrete, removing it.
C. False work shall be constructed as specified in the drawing and as directed by the
Engineer.
D. Formwork shall b sufficiently rigid to maintain in their correct position, shape and
profile and shall be such tight construction the concrete can be paced and
compacted without undue leakage of the mortar component of concrete.
E. The formwork construction shall permit accurate erection and easy stripping
without shock or damage to the cast concrete.
F. All external corners shall chamfered by fillet strips being fixed in to corner of the
formwork.
G. Formwork for wall, vertical sides of slab, and pillars can be removed after 24 hours.
H. False work and formwork for soft of beam and slab shall not be removed until after
28 days of curing.
I. The formwork shall be provided with a thin film of oil to allow easy stripping to
provide a smooth concrete surface.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 The work for this item may be carried out consisting of the following activities.
- Supply all materials for form work and formwork.
- For form work, establish well compacted strips if necessary provide lean
concrete strip
- Erect form work and formwork in accordance with the drawing and directions of
the Engineer
- Apply a thin oil film on the surface of the formwork,
- Fix reinforcement ( included in item 4.8)
- Cast concrete (included in item 4.10)
- Clean formwork from spoiled concrete and cement mortar immediately after
casting.
- Remove form work and formwork after the specified duration, clean and cart
away (false and formwork material may be re-used for other structures where
approved by the Engineer).
18
Bill 4:
DRAINAGE WORK
ITEM 4:8 Provide and fix steel reinforcement:
ITEM 4.8.1 Steel bar 12 mm.
ITEM 4.8.2 Weld mesh.
DESCRIPTION:
A. Reinforcement for any concrete work shall be as specified in the drawing and as
directed by the Engineer.
B. The item includes supplying the reinforcement of specified strength and quality
shown on the bending schedule and in fixing the reinforcement.
C. Reinforcement shall be cut and or bent to the dimension shown on the bend
schedule and in accordance with the drawing or as directed by Engineer.
D. Reinforcement shall be position as shown on the drawing and shall be firmly
secured in the position by trying with annealed.
E. Reinforcement shall be clean from dirt and oil.
F. No concrete shall be cast unless the reinforcement including formwork has been
checked and approved by Engineer.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 The work for this item may be carried out consisting of the following activities.
- Supply reinforcement of the specified quality and quantity
- Cut and bend reinforcement as specified in bending schedule.
- Ensure all reinforcement is clean from dirt and oil before fixing it.
- Fix the reinforcement as specified in the drawing and tie with wire. Including
cover and distance block.
QUALITY CONTROL
Test
Class and type
Spacing and tying
Cover
Method
Compare with drawing
Visual and tape
Visual and tape
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.8.1
Provide, and fix steel reinforcement
Frequency
all
all
all
Tolerance
0
+/-10 mm
+/-5 mm
Unit of
Method of
Measurement Measurement
Cubic metre AWD/MAP
(m3)of
masonry
work
4.8.2
Provide, and fix steel reinforcement
Square metre MAP/AWD
Weld mesh
(m2)-of weld
mesh
Payment: The Engineer shall effect payment of completed fixed reinforcement in the
following payment certificate upon approval of the works.
19
Bill 4:
DRAINAGE WORK
ITEM 4:9 Provide, place and compact approved hard core foundation layer for
structures.
DESCRIPTION:
A. Hardcore beds required for structure work shall be as specified in the drawing and
direct by the Engineer.
B. The item includes supply approved hard materials, placing and compacting
C. The longer dimension of the hardcore stone shall not be less than 20cm and smaller
dimension not less than 10cm.
D. The stones shall be placed up right and packed as close as possible. Voids shall be
filled with smaller stones.
E. The hardcore layer shall be compacted using a hand operated vibrating roller.
F. No concrete shall be cast unless the hardcore bed has been checked and approved
by the Engineer.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item. However,
compaction shall be carried out using a vibrating pedestrian roller.
 The work for this item may be carried out consisting of the following activities.
- Supply hard core stones.
- Place the stone up right and wedge them with smaller stones,
- Compact with pedestrian vibrating roller – fill additional void with smaller
stones
- Ensure a uniform and level surface is achieved.
QUALITY CONTROL
Test
Dimension and level
Compaction
Method
Tape, line level and straight
edge
Visual
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.9
Provide, place and compact hardcore
foundation layer for structures.
Frequency
all
Tolerance
+/- 20 mm
all
-
Unit of
Measurement
Cubic metre
(m3)- of
hardcore
compacted
Method of
Measurement
AWD/MAP
Payment: The Engineer shall effect payment of compacted hardcore layer(s) in the
following payment certificate upon approval of the works.
20
Bill 4:
DRAINAGE WORK
ITEM 4:10 Provide cast and cure concrete in class.
ITEM 4.10.1 Class Lean (1:4:8)
ITEM 4.10.2 Class 15 (1:3:6)
ITEM 4.10.3 Class 20 (1:2:4)
DESCRIPTION:
A. This item consist of providing concrete materials, mixing, placing and curing
concrete for structural work as specified in the drawing and as directed by the
Engineer.
B. Class lean (1:4:8) is concrete used for building.
C. Class 15 (1:3:6) is mass concrete usually without reinforcement.
D. Class 20 (1:2:4) is structural concrete with reinforcement.
E. Structural concrete will be sampled, tested, and approved by the Engineer.
F. Sand for concrete mixing shall be clean river sand, free from dust, lump. Soft or flaky
particles, organic matter.
G. Aggregate shall be well graded and free from organic materials.
H. Water shall be clean and free from oil and shall not contain any impurities that may
affect concrete durability.
I. The water/cement ratio shall not be more than 0.5
J. Concrete work for large structure shall be carried out as specified in the drawing and
as directed by the Engineer.
K. Cast concrete shall be protected from sunshine for 14 days, and properly rested.
L. Concrete slab and wall crown shall be kept for 7days.
M. No concrete shall be cast unless the formwork, reinforcement and hard core
bed have been checked and approved by the Engineer.
WORK METHED
 The contractor shall apply Labour method of work for this item. Mixing shall be
done using a mechanical mixer and compacting using vibrating poker.
 The work for this may be carried out consisting of the following activities:- Supply approve cement, sand and aggregate
- Mix concrete using labour or mechanical poker
- Cast concrete in equal layer not exceeding 30 cm.
- Compact or vibrate concrete
- Protect concrete from direct sunshine for 14 days and
- Keep slab and wall crowns wet for 7 days
MEASUREMENT AND PAYMENT
Pay item
No.
4.10
Description
Provide cast and cure concrete in class.
21
Unit of
Method of
measurement measurement
Cubic metre AWD
(m3)
Payment: The Engineer shall effect payment of completed formwork and cast concrete
work in the following payment certificate upon approval of the works.
Bill 4:
DRAINAGE WORK
ITEM 4.11 Provide gabion baskets and stones place and fill baskets.
DESCRIPTION:
A. Gabions are welded-wire boxes filled with stone, and may be used as components of
structure, to be used as retaining walls and for erosion protection.
B. The item includes supplying the gabion baskets, placing, and filling the basket with
stones as specified and approved by the Engineer.
C. Gabion baskets are supplied in different sizes. The correct size to be used shall be
specified in the drawing and/or, as directed by the Engineer.
D. Gabion baskets shall be tied together with 3 mm galvanized wire securing all edges
at 15 cm interval.
E. Filling shall be done with stones of similar size and shape as used for dry stone
masonry. The stones have to be packed as constructing a dry stone masonry wall
ensuring adequate bonding.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 The work for this item may be carried out consisting of the following activities.
- Supply gabion baskets of the specified size.
- Collect stones of size and shape which allows dry stone masonry
- Place the gabion basket in excavated foundation trench (item4.2)
- Assemble the gabion basket 4.4.1
- Fill gabion basket with dry stone masonry.
- Close gabion and secure lid – continue with next gabion course.
- Backfill the gabion after each course (item 4.14).
QUALITY CONTROL
Test
Dimension and level
Workmanship, placing,
tying, filling
Method
Tape
Visual
Frequency
all
all
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.11
Provide, gabion basket and stones, place
and fill basket
Tolerance
+/-10 0 mm
-
Unit of
Measurement
Cubic metre
(m3)- of place
and filled
gabion
Method of
Measurement
AWD
Payment: The Engineer shall effect payment of completed gabion work in the following
22
payment certificate upon approval of the works.
23
Bill 4:
DRAINAGE WORK
ITEM 4.12 Provide material and build grouted stone pitching 150 mm thickness.
DESCRIPTION:
A. Stone pitching is required to protect soil surface from erosion. This may be in drain
on slopes or river bank.
B. The item consists of leveling the area to be covered with stone pitching, collecting
stones, laying stones, mortaring the joint and constructing weep holes.
C. The area to be covered with stone pitching shall be trimmed to level and slope
indicated on the drawing, and as directed by the Engineer. The prepared surface
shall be firm and well compacted.
D. Stone shall be put in full contact with the surface and bedded in to mortar (grout) of
mix 1:4 and at a minimum thickness of 150 mm.
E. The mortar shall be troweled off flush with the surface of the stones.
F. Weep holes shall be provided to stone pitching on slope at an average frequency of
one per square meter, unless otherwise directed by the Engineer.
G. The surface of the stone pitching shall be protected from direct sunshine and kept
moist for 7 days.
WORK METHOD:
 The Contractor shall apply Labour method of work for this item.
 The work for this item may be carried out consisting of the following activities.
- Supply cement and sand for grouting and mix mortar (water/ cement ratio =1.4),
- Trim and level area to be covered and compact where necessary,
- Place stones in mortar and trowel surface flush with stone,
- Construct weep holes (use stacks or banana stem of min. 10 cm diameter,
- Cover stone pitching area to protect from direct sunshine and keep for 7 days.
QUALITY CONTROL
Test
Dimension and level
Workmanship, placing,
tying, filling
Method
Tape
Visual
Frequency
all
all
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.12
Provide, material and build grouted stone
pitching 150 mm thickness
Tolerance
+/-10 0 mm
-
Unit of
Method of
Measurement Measurement
Cubic metre
AWD
(m3)- of stone
pitching.
Payment: The Engineer shall effect payment of completed stone pitching work in the
following payment certificate upon approval of the works.
24
Bill 4:
DRAINAGE WORK
ITEM 4.13 Provide selected material and back fill structures.
DESCRIPTION:
A. Backfilling is required for structures including approaches, retaining walls and wing
wall on structures, gabion, etc. Note; backfilling of culvert lines is included in the
items for culvert installation, Items 4.3 and 4.4, respectively
B. This item consists of excavation, loading and hauling of approved selected material,
backfilling, watering and compacting.
C. Material for backfilling has to be approved by the Engineer. Where materials from
the excavation (Item 4.2) meet the specifications, this may be used as backfill
material provided it has been approved by the Engineer.
D. The backfill material shall be filled in layer not exceeding 15 cm
E. Each layer shall be compacted with hand rammers for backfill of retaining wall and
wing walls, gabion, etc, and equipment for approached to structures, the material to
be all compacted shall watered where necessary
F. Backfilling shall not be done until after 14 days from the date when the cement
bound masonry of concrete walls were constructed/cast.
G. Stone filter behind wall be placed as specified in the drawing and as directed by the
Engineer.
WORK METHOD:
 The Contractor shall apply Labour, Equipment or a combination of both to carry out
this item. Depending on the degree of difficulty of the work.
 This item consists of.
- Excavate approved materials and stockpile.
- Load and haul
- Off load and spread in layers not exceeding 15 cm loose
- Water if material is too dry until approximate optimum moisture content is
reached.
- Compact with hand rammer all fills behind retaining wall, compact with
pedestrian vibrating roller all fill on approaches of structures.
- Care to be taken during compaction so as to not damage the structure.
QUALITY CONTROL
Test
Method
Frequency
Tolerance
Dimension
Tape
all
Compaction
Visual
Random
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
4.13
Provide selected materials and backfill
structures
Unit of
Measurement
Cubic metre
(m3)-fill
Method of
Measurement
AWD
Payment: The Engineer shall effect payment of completed backfilling work in the following
payment certificate upon approval of the works.
25
Bill 5:
GRAVELLING AND COMPLETION WORKS
ITEM 5.1 Preparation of quarry site(s) consisting of clearing vegetation and
removing topsoil.
DESCRIPTION:
A. The Engineer shall approve quarries and their extent of exploitation. The quarries
shall be allocated to the contractor prior to commencement of works. The
contractor shall carry out respective negotiations with land owners and the
communities.
B. Before gravel can be excavated, quarry areas and the adjacent areas where topsoil
will be stockpiled have to be cleared from all vegetation, fences and structures.
Topsoil has to be removed and deposited in order to use it again to reinstate the
quarry at the end of the construction work.
C. The item consist of removing all the vegetation, crops, trees, roots, stumps, boulders,
fences, and structures from the gravel excavation area and topsoil (overburden)
deposited in areas as shown in the drawing and as directed by the Engineer. Waste
material shall be dumped at a places approved by the Engineer. The Engineer may
allow burning of waste material upon approval.
D. This item also consists of excavation of topsoil (overburden) including loading,
hauling, and stockpiling at the approved locations.
E. Final restoration of the quarry site(s) is covered in item 5.3.
WORK METHOD:
 The Contractor shall apply Labour, Equipment or a combination of both to carry out
this item. Depending on the degree of difficulty of the work.
 The work for this item may be carried out consisting of the following activities.
- Remove fence and structure from quarry and topsoil deposit areas.
- Cut grass and bushes, cut trees and remove stumps, grub roots, remove and
stockpile boulders.
- Haul and deposit cut vegetation and debris well outside the cleared area at
approved location.
- Burn deposit material only when is approved by the Engineer.
- Excavate topsoil, load topsoil and haul to approve stockpile location.
- Stockpile topsoil neatly so the it can be reused for reinstatement of the quarry.
QUALITY CONTROL
Test
Dimension
Method
Tape
Frequency
all
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
5.1
Preparation of quarry site(s)consisting of
clearing from vegetation and removing
topsoil
26
Unit of
Measurement
Cubic metre
(m3)of
clearing
quarry
Tolerance
+/- 200 mm
Method of
Measurement
AWD
Payment: The Engineer shall effect payment of completed backfilling work in the following
payment certificate upon approval of the works.
Bill 5:
ITEM 5.2
GRAVELLING AND COMPLETION WORKS
Excavation gravel, remove boulders, stockpile, load, haul, offload, spread,
water and compact.
DESCRIPTION:
A. The item includes all operations required to win gravel and to lay the gravel road
surface layer. In particular the item consists of excavation, stockpiling, loading,
hauling, offloading, spreading, watering and compacting.
B. The gravel shall be excavated from quarries approved by the Engineer. It is the
contractor obligation to inform the Engineer in case that the quality/ availability
of the gravel changes during the course of excavation.
C. Excavation and stocking of gravel shall be carried out as specified.
D. Rehaping of the formation surface may be required before the gravel can be
placed, where required, this activities is covered in item 3.1.
E. Where there remain a residual gravel layer from previous gravelling operation,
this residual layer shall scarified to a depth of not less than 10cm in order to
provide a bond between the old and the new gravel materials. Scaritication,
where required, with be include in the unit rate for this item.
F. Oversize stone and boulders shall be removed from excavated gravel and
deposit outside the quarry at location approve by the engineer. Such stone and
boulders may be reused for structures.
G. Offloading shall be done by tipping or throwing the material uniformly in to
spreading boxes set out with pegs and string as specified. The compacted
thickness of the layer will beas specified in the drawing and as directed by
engineer.
H. Spreading of the gravel shall be carried out by Labour or machine method to
ensure uniform thickness of the layer and camber cross-fall as specified.
Spreading also include removing or crushing of all oversize material as directed
by the Engineer.
I. Compaction shall be carried out with self-propelled or towed roller with
approved total weight and dimension. A minimum six (6) passes of compaction
shall be applied or until not roller imprint on the surface can recognized. The
gravel layer to be compacted shall not exceed 20 cm loose and the gravel shall be
watered before compaction take place in order to achieved require moisture.
J. The camber of the compacted formation shall have a cross fall of not less than
8%.
WORK METHOD:
 The Contractor may choose Labour, Equipment or a combination of both to carry
out this item. Depending on the degree of difficulty of work. Excluded are: spreading
of the gravel layer which shall be done using labour only and compaction which
shall be using equipment.
 The work for this item may be carried out consisting of the following activities.
27
-
Excavate gravel and stockpile ready for loading, remove oversize stones and
boulder, haul to location located for depositing, load gravel and haul to the site.
Reshape earth road formation by filling ruts and potholes, re-establish camber
and shoulder line if defective refer item 3.1.
Scarify, to a minimum depth of 10 cm, where any residual gravel exists.
Set out spreading boxes in accordance with required thickness of the gravel
layer
Offloaded and spread material uniformly in boxes using labour. Crush oversize
stone with sledge hammer. Form camber and check with camber board.
Water gravel to achieve approximate optimum moisture content
Compact with towed or self-propelled roller or compactor.
Check uniformly of layer thickness (20 cm loose) and achieved * cross- fallcorrect immediately where necessary.
QUALITY CONTROL
Test
Dimension
Method
Tape
Frequency
all
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
5.2
Excavation gravel, remove boulder,
stockpile, load, haul, offload, spread, water
and compact.
Tolerance
+/- 200 mm
Unit of
Method of
Measurement Measurement
Cubic metre
AWD
(m3)of
compacted
gravel layer in
place.
Payment: The Engineer shall effect payment of any completed section of gravelling work in
the following payment certificate only after detail checking and confirmation of the actual
quantity of gravel compacted and upon approval of the works.
Bill 5:
GRAVELLING AND COMPLETION WORKS
ITEM 5.3 Restoration of site(s), quarries and borrow pits
DESCRIPTION:
A. For environmental reasons, quarries and borrow pit shall be restored at the end of
the work refer of the condition of contract. The ground shall leveled, topsoil hauled
back and uniformly spread over the entire exposed/ excavation area
B. Where necessary appropriate protection measure may be taken to avoid erosion of
the spread topsoil layer.
C. Grass and trees may be replanted as directed by the Engineer.
D. Adequate drainage provisions shall be made to protect excavation areas.
E. The work site(s) shall be cleared of all debris, remaining materials store, equipment
etc, site camps including all sanitation facilities shall be dismantled and removed
and the entire are of the work restored to its original condition.
28
WORK METHOD:
 The Contractor shall apply Labour, Equipment or a combination of both to carry out
this item. Depending on the degree of difficulty of the work.
 The work for this item may be carried out consisting of the following activities.
- Level quarry or borrow pit
- Loosen deposited topsoil,
- Load and haul
- Spread uniformly
- Plant grass and trees as directed by the Engineer,
- Carry out erosion control measures as directed by the Engineer.
- Provide adequate provision for drainage of the area,
- The entire are of work site(s) restore to its/their original condition.
QUALITY CONTROL
Test
Check
Method
Visual
Frequency
all
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
5.3
Restoration of site(s), quarries and borrow
pits
Unit of
Measurement
Lump sum
Tolerance
+/- 200 mm
Method of
Measurement
None
Payment: The Engineer shall effect payment of completed backfilling work in the following
payment certificate upon approval of the works.
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.1 Mobilization and demobilization
DESCRIPTION:
A. Item covers the establishment, maintenance and removal of site camp facilities.
B. The contractor shall establish construction camp(s) on site(s) and at location as
approved by the Engineer in collaboration with the community/communities in which
the works are to be performed.
C Particular attention in locating the camps shall take in to account the require of
labourer for which the walking distance from the site camp to the actual work site
should not exceed 4 km.
D Depend on the length of road to be worked on in might be necessary to maintain
more than one site camp or to be shift camps to new location at frequent interval
E Site camp establishment work include:- Providing and hauling all required material from contractor source site
- Erection of suitable accommodation for the contractor staff on site
- Cooking facilities to prepare food for labourer
- Supply of drinking water and sanitation facilities to satisfaction of the local
health Authority
29
Erect site office for the contractor site agent and supervisory staff.
Adequate space and facilities to allow for site meeting. With Engineer and
Employer and with communities and communities representative.
- Erection of store and other facilities.
- Any facilities and security measure require maintain safety for the staff and
labourer, materials and equipment, such as fence gates, watchmen etc.
F. Site camp demobilization work includes:
- Removing of all above description facilities and hauling them away
- Reinstatement of site camp areas to original appearance including filling of pit
latrine, if they not required by the community.
- Hand back the site camp area to the community/communities.
- Undertaking all activities included in this Item 5.3 to the satisfaction of the
Engineer
-
QUALITY CONTROL
Test
Check
Method
Visual
Frequency
all
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
6.1
Mobilization and demobilization
Unit of
Measurement
Lump sum
Tolerance
Method of
Measurement
LS
Payment: Payment of this Lump sum item will be effected as follows 70% on the first
payment certification, and following issuance of the Environmental Restoration
certification (conditions of contract, clause 64) 30% payment on the final payment
certificate.
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.2 Insurance and Bonds
DESCRIPTION:
A. The contractor shall provide certificate from the approved insurance companies
to effect that the contractor has taken out all the insurance as required in the
B. The contractor may required to provide a performance bond or security, either
in form of Bank Guarantee or performance bond or security, where required,
must be provide to the employer by the contractor within fourteen (14) days of
notification of award of contract
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
6.2
Insurance and Bonds
Unit of
Measurement
As negotiated
with the client
30
Method of
Measurement
LS
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.3 Traffic Accommodation
DESCRIPTION:
A. This item cover all cost for traffic signs and traffic safety measures for i) signs for
Diversion and traffic regulation during performance of works, and ii) traffic signs for
the completed road. The item include supply of materials, their cutting shaping
painting, labour equipment, transport and installation and their maintenance for the
entire duration of work.
B. Traffic sign and traffic regulation during the scope shall be done in accordance with
the relevant traffic regulation of the ministry of work, housing and communication.
C. Traffic sign for completed road or road section shall be in accordance with the
general standard laid down by ministry of work, housing and communication and
shall be manufactured and set in accordance with drawing of this contract.
MEASUREMENT AND PAYMENT
Pay Item Description
No.
6.3
Traffic Accommodation
Unit of
Measurement
Shall be paid in full
in the final payment
certificate
Method of
Measurement
LS
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.4 Bill Board
DESCRIPTION:
A. Bill boards as specified in the Drawing and as directed by the Engineer, shall be
placed at the beginning and end of the road or road section cover by the contractor.
B. Bill Boards shall be place next to the road way at location identified by the Engineer.
C. Bill Board shall be maintained for the entire duration of work.
WORK METHOD
 The work for this item may be carried out consisting of the following activities:- Supply Bill board with details as specified in the drawing
- Dig holes for post; minimum depth of 100cm of 30 cm.
- Erect post of bill board and embed in lean concrete.
- Expose of excavated soil and other materials.
- Maintain on regular basis during performance of work.
QUALITY CONTROL
Test
Check
Method
Visual
Frequency
all
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Tolerance
-
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
6.4
Bill boards
Unit of
Measurement
Number
of bill boards
Method of
Measurement
MAP
Payment: the Engineer will effect payment for erection Bill Board in full in the final
payment certificate and upon approval of the works.
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.5 Maintenance of the whole of the work
DESCRIPTION:
A. The cred by this contractor shall maintain the whole of the work covered by this
contract until the end of the Defect Liability period and until the road section is
officially handed over to the Employer.
B. The contractor shall carry all the maintaining activities required to retain the work
in the condition as built ordinary routine maintenance activities may be sufficient
and consist of: keeping the drainage system including the drain, culvert and
structures, open at the all time, reshaping of the carriageway including filling of the
ruts and pothole, raking of loose gravel from side drain and shoulder to
carriageway, and controlling vegetation.
C. Maintain activities shall be carried out on a continuous basis and must be attended
to at least on a weekly basis. The exact input of resources and operation will depend
upon the actual maintenance requirement and on the advice and direction by the
Engineer.
D. Maintenance operation and their organization shall be used as a demonstration for
the respective community on how to manage and carry out routine maintenance
work using labor-base method.
WORK METHOD
 The contractor shall apply labour method of work for this item, using either a length
–person system or gangs of labour.
 The work for this item may be carried out consisting of the following activities:
- Remove debris and silt from all drainage channels culvert and structure:
- Rake loose gravel from shoulders and side drain back on to the carriageway.
- Fill ruts potholes, erosions gullies and depression with gravel and compact
- Control vegetation e.g. grass cutting grubbing, etc.
- Repair defective scour check and/or add one were required.
- Repair minor defects on structure.
QUALITY CONTROL
Test
Road condition check
Method
Visual
Frequency
Continuous
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Tolerance
-
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
6.5
Maintenance of whole of all work
Unit of
Measurement
Lump sum
Method of
Measurement
LS
Payment: The Engineer shall effect payment for this item in proportion to the total value to
the total of the work performed at the time of preparation of the next payment certificate
and the following satisfaction performance of the whole work of the works.
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.6 Supervision of the works by the Employer including testing facilities.
DESCRIPTION:
A. This item covers the related to a) supervision, and b) testing of the work by
employer.
B. Cost associated with supervision of works by the Engineer and Employer and his
representative, the Engineer
- Provision of transport allowance to the Engineer and his staff to carry out
supervisory activities and to attend various meeting related to this contract.
- Provision of testing and measuring facilities and tools to the engineer.
C. Cost associated with supervision of the contract by the contractor shall be included
in the contractor unit rates as indirect cost/overhead for each and every item.
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
6.6
Supervision of the
project by the Employer
inc. testing facilities
Unit of
Measurement
Lump sum to be provided for his
item shall be 5% of the total
value of Bill 1, Bill 2, Bill 3, Bill 4,
and Bill 5.
Method of
Measurement
LS
Bill 6:
PRELIMINARY AND GENERAL ITEMS
ITEM 6.7 Site Meeting with the local communities including HIV/AIDS awareness.
DESCRIPTION:
A. Fundamental principle for ensuring community participation is to ensure that
development activities are implemented in the most transparent manner.
B. One of the ways of doing so is to involve the stakeholder in various implementation
processes. At the sub-county level, the “stakeholders” are the benefiting
communities where the work is taking place.
C. To ensure all stakeholders follow closely what is taking place in their sub-county,
there is need for regular meetings with the stakeholders mentioned above.
D. Other entities that may participate in these meetings are relevant district staff
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(community development offices, Gender office, Environment offices, labour office,
and District Engineer office, among others). Meeting would take place on site or
near.
E. The further principle for ensuring community participation is promoting the use of
local resources, particularly Labour. This includes promoting the participation of
women, and to encourage their working side-by-side with men. This is likely to lead
to sexual relationships, and the potential promotion of sexual transmissions of HIV
and other sexually-transmitted diseases (STDs). To address this potential problem,
meetings will be held at the sites to sensitize workers to sexual-disease
transmissions, and the prevention of HIV and STDs. Sensitization meeting will be
facilitated by health workers from the health sub-district.
F. This item covers the following cost for all the above mentioned meetings:
- Fuel for transport of one vehicle from the district to site of work
- Lunch allowance for the official representative of the sub-county or selected
work committee
- Other small item(s) required for undertaking and recording the minutes of the
meeting, including stationary etc.
G. The lump sum provision for this item shall be under the discretionary control of the
Employer.
MEASUREMENT AND PAYMENT
Pay Item
Description
No.
6.7
Site meeting with local
communities include
HIV/AIDS awareness
Payment
Method of
Measurement
Lump sum to be provided for his LS
item shall be 5% of the total
value of Bill 1, Bill 2, Bill 3, Bill 4,
and Bill 5.
34