Kericho County Strategic Intervention Projects 2018/2019 ...

Kericho County Strategic Intervention Projects 2018/2019Tuiyobei Water Supply System

BILL DESCRIPTION AMOUNTNo. KES

Preliminary and General Items

1 INTAKE WORKS

1.1 BILL NO 1.1 WATER INTAKE REHABILITATION

1.2 BILL NO. 1.2 REHABILITATION OF THE WATER CATCHMENT AREA

1.3 BILL No. 1.3 - RE-CONSTRUCTION OF INTAKE NO.2 AT TUIYOBEI (THIS BILL IS PROVISIONAL)

SUMMARY OF INTAKE WORKS

2.0 WATER TREATMENT UNIT(THIS BILL IS PROVISONAL)2.1 BILL NO: 2.1-COMPOSITE FILTRATION UNIT

2.2 BILL NO: 2.2-BACKWASH PUMP

SUMMARY OF WATER TREATMENT UNIT

3.0 SURFACE PUMPING STATION3.1 BILL NO: 2.1-SURFACE PUMPING STATION

SUMMARY OF SURFACE PUMPING STATION

4 TRANSMISSION LINES

4.1 BILL NO 4.1-TM1

4.2 BILL NO 4.2-TM2

4.3 BILL NO 4.3- RISING MAIN

4.4 BILL NO 4.4 -CONSTRUCTION AND REHABILITATION OF TANKS

SUMMARY OF TRANSMISSION LINE

5 DISTRIBUTION NETWORK

5.1a-b BILL 5.1 a-b-LAYING OF NEW DISTRIBUTION NETWORK

5.2 BILL 5.2 REPLACEMENT OF PORTIONS OF THE DITRIBUTION LINES

SUMMARY OF DISTRIBUTION NETWORK

6 BILL NO 6 DAYWORKS

STRATEGIC INTERVENTION PROJECTS -2018/2019TUIYOBEI WATER SUPPLY PROJECT

SUMMARY OF BILLS OF QUANTITIES

VAT 16%

TOTAL INCLUSIVE OF VAT AND CONTIGENCIES

SUB TOTAL

CONTINGENCIES 5%

TOTAL WITH CONTINGENCIES

Summary Page : Page 1 of 35

ITEM No. DESCRIPTION UNIT QUANTIT

Y RATE(KES)

AMOUNT (KES)

A110 Performance Security Item L.S

A120.1 Insurance for Works and Contractor's Equipment Item L.S

A120.2 Insurance against Injury to Third Party Persons and Damage toProperty Item L.S

A120.3 Insurance for Contractor's Personnel Item L.S

The following provisional sums are to be measured on completion and priced in accordance with the rates contained in these bills of quantities or prorata thereto or deducted in whole if not required

A Allow a provisional sum of Kenya shillings Fifty thousand (50,000.00) only for compliance with N.C.A and N.E.M.A regulations Item PC SUM 50,000.00

BAllow a provisional sum of Kenya shillings Five Hundred Thousand (500,000.00) only for Project Management to be dispensed as per Engineers and Employesr Instructions

Item PC SUM 500,000.00

C Allow a provisional sum of Kenya shillings Fifty Thousand (50,000.00) only for use in water quality sampling and testing. Item PC SUM 50,000.00

DAllow a provisional sum of Kenya shillings Fifty Thousand (50,000.00) only for use in tie in works between the old and new works


EAllow a provisional sum of Kenya shillings Fifty Thousand (50,000.00) only for provision of sanitation facilities as may be instructed by the Engineer


KERICHO COUNTY STRATEGIC INTERVENTION PROJECTTUIYOBEI WATER SUPPLY SYSTEM

PRELIMINARIES AND GENERAL ITEMS

TOTAL CARRIED FORWARD TO SUMMARY SHEET


BILL NO 1.1 WATER INTAKE REHABILITATION

1.1.1

Provide all required materials and Rehabilitate Tuiyobei Intake No.1. Works to include : Removal and disposal of accummulated sludge at the intake , supply of appropriate material and Compaction of the base of the weir,repair existing weir and raise it by 1.5m with reinforced concrete/masonry as shall be directed by the Engineer, construction of new weir outlet chamber with cover slab.Include fencing of the intake with barbed wire & chain link and general clearance of the intake area allowing for proper acess to the weir. Rate to include river diversion and continued water supply to current consumers during intake rehabilitation

BILL NO. 1.2 REHABILITATION OF THE WATER CATCHMENT AREA

1.2.1Allow a Sum for Catchment protetction activities ( Tree planting, gabion construction , drainage works etc) as shall be instructed by the Engineer

KERICHO COUNTY STRATEGIC INTERVENTION PROJECTS - 2018/2019TUIYOBEI WATER SUPPLY SYSTEM

BILL No. 1.1 - 1 NO. INTAKE WEIR

LS



LS

BILL No 1.1 WEIR : Page 4 of 35


BILL No. 1.3 - RE-CONSTRUCTION OF INTAKE NO.2 AT TUIYOBEI (THIS BILL IS PROVISIONAL)ITEM NO. DESCRIPTION UNIT QTY RATE (Ksh) AMOUNT (Ksh)

A ; GENERAL ITEMS

A2 ; Temporary works for the diversion of water along Tuiyobei River at the intake point

A365 Cofferdams for the time required to do the works LS 1A366 Pumping for the time required to do the works LS 1

D1 ; GENERAL CLEARANCE

D100

Clear site within and around proposed intake for all rubbish, vegetation, bushes and grasses and artificial articles above the original ground surface.Removal of silt from the existing water intake

ha 0.15

D210 Removal of trees, Girth : 500mm - 1m nr 4.0D310 Removal of tree stumps, diameter more than 1m nr 4.0

E ; EARTH WORK

E3 ; EXCAVATIONS FOR FOUNDATIONSExcavate below stripped surface to formation level in common material. Retain approved material for back-filling / filling and cart away unsuitable material to tip as directed by Engineer

E334 Excavation for foundations in Rock from 1.5m - 2.0m m3 40E335 Excavation for foundations in Rock from 2m - 2.8m m3 64E431 Excavation of topsoil depth not exceeding 0.25m m3 123

E5 ; Disposal of Excavation Material

E512 Trimming of excavated surfaces; material other than topsoil,rock or artificial hard material m2 104

E531 Disposal of excavated topsoil m3 123

KERICHO COUNTY STRATEGIC INTERVENTION PROJECTs 2018/2019TUIYOBEI WATER SUPPLY SYSTEM

TOTAL CARRIED FORWARD TO NEXT PAGE





F ; INSITU CONCRETE

Provision of Concrete

F263 Designed mix; Grade C30A; Cement to BS12 and 20mm m3 25

F400Prescribed mix; Grade C15P; 20 mm aggregate; Cement to BS12 m3 25

Placing of Concrete

Place, compact and cure concrete in the following

Mass Concrete; Class 15/20

F6 ; Mass concreteF611 75mm thick lean concrete blinding with mix ratio (1:3:6)

under the reservoir base slab, foundation and valve chamber

m3 15

G ; CONCRETE ANCILLARIESG2 ; Fair Finish Formwork

G215 Plane vertical sides for both external and internal walls m2 250G245 Plane horizontal sides for both external and internal walls m2 215

TOTAL FROM PREVIOUS PAGE






G5 ; Reinforcement; deformed high yield steel bars to BS 4449, HT = 425 N/mm2

G529 Nominal size 8,10,12,16,25 mm Ton 2G562 Steel fabric BS4483 ; A252 square mesh; nominal mass 3 -

4kg/m2 LS

PIPEWORK – FITTINGS AND VALVES

All pipe work and fittings shall be PN 10 laid in accordance with Drawings provided and engineers instructions

I7 ; HDPE DRAIN PIPEI713 OD 200 in trenches with depth range 1.5m - 2.0 m m 60

J ; FITTINGS AND VALVES

STEEL PIPE EPOXY COATED EXTERNAL SURFACES AND CEMENT LINED ON INTERNAL SURFACE WITH PRESSURE RATING OF PN 10.

J382 DN 150 Double Flanged Spigot L = 7 m nr 2J811 DN 150 Flanged Gate Valve nr 1J892 DN 150 Sluice Valve nr 1

N ; Miscellaneous MetalworkAll metal work to be stainless steel or galvanised mild steel of 10mm thickness. Adequate protection against rusting should be provided and painted while on site.

N130 Stainless Steel internal access ladder with safety loops, stringers and landing rail m 4

N140 Hand Rails. To be 1.2m high m 6







O ; Timber

O1 ; Hardwood Components

O142.1 Stop log to be placed in the intake chamber in the grooves m 8





ITEM DESCRIPTION UNIT QUANTITY RATE AMOUNTNo. (Kshs) (Kshs)

1 EXCAVATION

The rates should include for all strutting, shuttering, stabilising the excavation and keeping the excavation free from water by pumping, bailing or other means. Excavate for foundation part backfill after construction and remainder cart away to tips or use as fill on site, all as directed.

1.1 Maximum depth less than 1.0m m3 91

1.2 Ditto- but depth 1.0 to 2.0m m3 91

1.3 Extra over excavation in rock Class 'A' m3 12

1.4 Ditto - in rock Class 'B' m3 19

1.5 Ditto - in rock Class 'C' m3 10

2 CONCRETE WORKS

Provide, mix and place concrete as directed.

2.1 Concrete Class 15/20 in 75mm blinding layer under base slab and footings allowing for sloping sides. m2 70

2.2 Concrete Class 15/20 in 400mm thick pipe surround m3 6

2.3 Cement mortar mix 1:4 for 50mm screed to fall on base slab (average 25mm thick) m2 66

2.4 Mass concrete thickness 300mm Class 15/20 for surround to 'Hudo' nozzles and wash water channel. m3 20

2.5 Vibrated reinforced concrete Class 25/20 to floor slab 150mm thick m3 10

2.6 -Ditto - but for suspended beams m3 2

2.7 -Ditto - but for ring beams m3 2

3 STEEL REINFORCEMENT

Provide and fix steel reinforcements including cutting, bending, propping with spacers and tying as specified.

3.1 16mm dia. high tensile and under kg 3,270

4 FORMWORK

Provide and fix shuttering including propping, strutting and striking all as specified, allowing for curvature where necessary.

4.1 Sides of base slab m2 10

4.2 Sides for thickening base slab for pipes m2 9

4.3 Sides for beams (vertical and horizontal) m2 10

4.4 Sides of ring beams m2 15

KERICHO COUNTY STRATEGIC INTERVENTION PROJECT 2018/2019

BILL NO: 2.1-COMPOSITE FILTRATION UNIT


(THIS BILL IS PROVISONAL)

TUIYOBEI WATER SUPPLY SYSTEM

BILL NO 2.1 CFU-Unit : Page 9 of 35


5 SEALER

5.1 Provide and lay plastic joint 25mm x 25mm sealer or approved equivalent on base slab/external walls. m 35

Epoxy Floor and Wall Paint as 'Masterseal 180' or approved equivalent Apllied strictly in accordance with the Manufacturer's printed instruction:-

5.2 Paint to filtration unit m2 60

5.3 Paint to Sedimentation unit m2 120

6 WALLS

Walls to be constructed using Approved hard Natural Stone

6.1 Construct stone masonry walls with cement mortar 1:3 thickness m2 40

6.2 Construct stone masonry walls with cement mortar 1:3 thickness m2 130

7 D.P.C:-

7.1 Provide for bituminous felt and paint D.P.C. to foot of walls m2 25

8 PIPES AND FITTINGS

Supply and install all pipework and fittings including concrete surrounds etc. to the filter unit as specified in the drawing.

Inlet Pipework and Ferrous Fittings to Class NP16 (Approved GMS Pipes and Fittings)

8.1 150mm dia. Coupling (Mark 1) Nr 1

8.2 150mm dia single threaded (male) pipe 1040mm long with puddle

Nr 1

8.3 150mm dia female threaded Socket (Mark 3) Nr 1

8.4 150mm dia. single threaded (male) 90⁰ bend (Mark 4) Nr 1

8.5 200mm dia double threaded (male) pipe 360mm long with cap (Mark 5) Nr 1

8.6 200mm dia. Nut (Mark 6) Nr 2

8.7 200mm dia. double threaded (male) pipe 1130mm long (Mark 7) Nr 1

8.8 200mm dia. Sockets (Mark 8) Nr 2

8.9 200mm dia. all threaded (female) 90⁰ bend (Mark 9) Nr 1

8.10 200mm dia single threaded (male) pipe 1040mm long (Mark 10) Nr 1

Outlet Pipework and Ferrous Fittings to Class NP16 (Approved GMS Pipes and Fittings)

8.11 150mm dia double threaded (male) nipple (Mark A) Nr 2

8.12 150mm x 150mm dia all threaded tee (female) with puddle flange

Nr 1

8.13 150mm dia single threaded (male) nipple (Mark C) Nr 1

8.14 150mm dia. all threaded (Female) 90⁰ Elbow (Mark D)Nr 1

8.15 150mm dia flanged spigot pipe 5000mm long with threaded spigot

Nr 1





8.16 150mm x 150mm dia All flanged cross (Mark F) Nr 1

8.17 150mm dia. All Flanged Gate Valve with 2.0m long Extension Spindle (Mark G) Nr 3

8.18 150mm dia Flange Adaptor (Mark H) Nr 3

8.19 150mm dia Plain ended pipe 1.2m long with puddle flange (Mark I) Nr 1

8.20 150mm dia Single Flanged pipe 1.2m long (Mark J)Nr 1

8.21 150mm dia Plain ended pipe 4.8m long with one end bevelled (Cut to suit on site) (Mark K) Nr 1

Washwater Outlet Pipework and Fittings (Approved G.I Pipes and Fittings)

8.22 Single threaded (male) concentric wash water collector, 420mm x 150mm and 375mm long (Mark i) Nr 1

8.23 150mm dia socket - female threaded (Mark ii)Nr 1

8.24 150mm dia all threaded (male) pipe 1625mm long with puddle flange at

Nr 1

8.25 150mm dia. all threaded (Female) 90⁰ Elbow (Mark iv) Nr 1

8.26 150mm dia single threaded (male) pipe 5000mm long with puddle flange at 400mm from spigot end (Mark v) Nr 1

8.27 150mm dia flange adaptor (Mark vi)Nr 1

8.28 150mm dia. all flanged gate valve with 2.0m long Extension Spindle

Nr 1

8.29 150mm dia. single flanged 90⁰ bend (Mark viii) Nr 1

Scour Pipework and Fittings (Approved G.I Pipes and Fittings)

8.30 100mm dia plain ended pipe 2700mm long (Mark a) Nr 3

8.31 100mm dia flange adaptor (Mark b)Nr 3

8.32 100mm dia all flanged gate valve with 2.0m long Extension Spindle

Nr 3

8.33 100mm dia single flanged 90⁰ bend (DRILLED TO PN 16) (Mark d) Nr 3

Overflow Pipework and Fittings (Approved G.I Pipes and Fittings)

8.34 150mm x 100mm dia reducing socket (smaller dia female threaded)

Nr 1

8.35 100mm dia. double threaded (male) 90⁰ bend (Mark f) Nr 2

8.36 100m dia socket (female threaded) (Mark g) Nr 3

8.37 100mm dia double threaded (male) nipple 240mm long with puddle fl t 100 f d (M k h)

Nr 1

8.38 100m dia single threaded (male) pipe length 1500mm (Mark i)Nr 1





Other Pipework and Fittings (Approved G.I Pipes and Fittings) and Metalwork

8.39 Supply and install 75 dia flap valve as specifiedNr 4

8.40 Allow for formation of a 100mm wide, 18m long channel in weak concrete benching as required. Nr 1

8.41 Install 3mm G.M.S. steel plate 170mm x 200mm x 2050mm long channel for wash water to be set in mass concrete Class 15/20. Nr 2

8.42 Install 6mm G.M.S plate 250mm x 2100mm long cover for water channel with slots size 20mm x 150mm, 200mm c/c Nr 2

8.43 Supply and install 50mm dia. G.I pipe, 1700mm long with 9Nr. 19mm dia. holes as shown Nr 2



8.46 Supply and install 50mm dia. G.I pipe, 1300mm long with 7Nr. 19mm

Nr 2

8.47 Supply and install 'Hudo' nozzles in underdrain pipes Nr 96

9 FILTER MEDIA

Filter Media details are shown on Drawing

9.1 Supply and lay graded gravel of size 2mm to 38mm in 4 layers 75mm thi k

m3 3

9.2 Supply and lay coarse sand of size 1mm in one layer 75mm thick m3 1

9.3 Supply and lay graded sand of size 0.5mm - 1.0mm in two layers as directed m3 6

9.4 Allow for connection of the composite filtration unit to the inflow 150mm dia. GMS pipe and outflow as directed. Nr 1

9.5 Test and commission the composite filtration unit including disinfection

Nr 1

10 MISCELLANEOUS WORKS

10.1 Provide and fix GMS sheet 6mm thick settled water collection weir length 3000mm as detailed on Drawings Nr 1

10.2 Provide all materials and fix an external access ladder to Composite Filtration Unit as per details on Drawings. Item LS

10.3 Provide all materials and fix 1200mm wide Chequered Plate Walking Platform over the Composite Filtration Unit complete with handrails as

d t il D i

Item LS

10.4 Provide for water proofing Plaster for internal masonry walls to

Item LS

11 CHAMBERS11.1 Construction of standard chambers size 1.2m×1.2m×2m

Nr 3





ITEM DESCRIPTION UNIT QUANTITY RATE AMOUNTNo. (Kshs) (Kshs)

1 EXCAVATION

The rates shall include for all strutting, shuttering, stabilising the excavation faces, and keeping the excavation free of water by pumping, bailing or other means.

Excavate for foundations, part backfill after construction and remainder, cart away to tips or use as fill on site, all as directed by the Engineer.

Excavate below stripped level to formation level in common material, part backfill after construction and remainder, cart away to tips or use as fill on site, all as directed by the Engineer.

1.1 Maximum depth n.e. 1.0 m m3 8

1.2 -Ditto- but maximum depth 1.0 m to 2.0 m m3 8



1.5 Extra Over Item 1.1 to 1.4 for excavation in rock Class 'A', Blasting not permitted (Provisional)

m3 2

1.6 Extra Over Item 1.1 to 1.4 for excavation in rock Class 'B', Blasting not permitted (Provisional)

m3 3

1.7 Extra Over Item 1.1 to 1.4 for excavation in rock Class 'C', Blasting not permitted (Provisional)

m3 1

Fill

1.8 Transport approved excavated material from site and use as fill and compact in 200 mm layers as specified on site as and where directed by the Engineer. Compaction tests to be done and rates to include for this.(Provisional)

m3 5

1.9 Provide approved hardcore material and compact in layers of 200 mm, blinded with final material 25 mm thick (Provisional)

m3 2

2 CONCRETE WORKS

Provide, mix and place concrete as directed:

2.1 Plain concrete class 15/20 in 75mm thick blinding under the base of Backwash Water Sump and Pump Control Room

m2 8

Vibrated reinforced concrete class 25/20 in:

2.2 Base Slab of Backwash Water Sump and Pump Control Room m3 3

2.3 Walls of Backwash Water Sump and Pump Control Room m3 9

2.4 Cover slab of Backwash Water Sump and Pump Control Room m3 2

KERICHO COUNTY STRATEGIC INTERVENTION PROJECTS 2018/2019

TUIYOBEI WATER SUPPLY SYSTEM


BILL NO: 2.2-BACKWASH PUMP(THIS BILL IS PROVISONAL)

BILL NO 2.2 BACKWASH PUMP : Page 13 of 35


3 REINFORCEMENT

Provide and fix high tensile reinforcement , including cutting, bending, propping with spacers and tying as specified

3.1 Reinforcement, all diameters kg 2,000

4 FORMWORK

Provide and fix shuttering including propping, strutting and striking, all as specified

Vertical Formwork - Class F1 Finish

4.1 Sides of base slab for Backwash Water Sump and Pump Control Room, width n.e. 0.2m m 50

Vertical Formwork - Class F3 Finish

4.2 Sides of Backwash Water Sump and Pump Control Room walls width n.e. 4.0m m2 55

4.3 Boxing out 150mm x 150mm holes in concrete walls of Backwash Water Sump and Pump Control Room and making good after installation of pipework.

Nr 1

5 PIPEWORK - APPROVED LINED FERROUS PIPES TO CLASS NP16

Supply, transport to site and store in secure place, including jointing materials, bolts, gaskets, packing, jointing glues, etc. as applicable

Pump House Inlet Pipework Schedule as shown in the drawings

5.1 100mm dia plain ended Pipe 1400mm long with Puddle Flange 100mm from one end

Nr 1

Pump House Delivery Pipework Schedule as shown in the drawings

5.2 50mm dia All Flanged 900 bend (Mark 1) Nr 6

5.3 50mm dia Flanged Spigot Pipe 1230 mm long (Mark 2) Nr 2

5.4 50mm dia All Flanged Pipe 560mm long with Puddle Flange 280mm from one End (Mark 3) Nr 3

5.5 50mm dia All Flanged Non-return Valve (Mark 4) Nr 2

5.6 50mm dia All Flanged Gate Valve to BS 5163 (Mark 5) Nr 2

5.7 50mm dia Flange Adaptor (Mark 6) Nr 4

5.8 50mm dia Flanged Spigot Pipe 400mm long (Mark 7) Nr 2

5.9 50 x 50 x 50mm dia. all Flanged Tee (Mark 8) Nr 1

5.10 80 x 50mm dia All Flanged Concentric Taper (Mark 9) Nr 1

5.11 80mm dia Flanged Spigot Pipe 1,000mm long (Mark 10) Nr 1

5.12 80mm dia Coupling (Mark 11) Nr 1





Scour and Overflow Pipework Schedule as shown in the drawings

5.13 150mm dia Plain ended Pipe,1400mm long with puddle flange 100mm from one end (Mark a) Nr 1

5.14 150mm dia Flange Adaptor (Mark b) Nr 1

5.15 150mm dia all Flanged gate valve to BS 5163 with extension spindle (Mark c) Nr 1

5.16 150mm dia Flanged Spigot 900 (cut to suit on site) bend (Mark d) Nr 1

5.17 100mm dia Flanged Spigot Pipe,400mm long with puddle flange at 100mm from the plain end (Mark e) Nr 1

5.18 100mm dia all Flanged 900 bend (Mark f) Nr 1

5.19100mm dia Flanged Spigot Pipe, 1800mm long (Cut to suit on site) (Mark g)

Nr 1

5.20 100mm dia Flange Adaptor (Mark h) Nr 1

5.21 100mm dia all Flanged 450 bend (Mark i) Nr 1

5..22 100mm dia Flanged Spigot Pipe, 420 mm long with the spigot end bevelled (Cut to suit on site) (Mark j) Nr 1

Transport from Site Store, Install,Test and Commission

Pump House Inlet Pipework Schedule as shown in the drawings

5.23 100mm dia plain ended Pipe 1400mm long with Puddle Flange 100mm from one end (Mark i) Nr 1

Pump House Delivery Pipework Schedule as shown in the drawings

5.24 50mm dia All Flanged 900 bend (Mark 1) Nr 6


5.26 50mm dia All Flanged Pipe 560mm long with Puddle Flange 280mm from one End (Mark 3) Nr 3

5.27 50mm dia All Flanged Non-return Valve (Mark 4) Nr 2

5.28 50mm dia All Flanged Gate Valve to BS 5163 (Mark 5) Nr 2

5.29 50mm dia Flange Adaptor (Mark 6) Nr 4






5.31 50 x 50 x 50mm dia. All Flanged Tee (Mark 8) Nr 1

5.32 80 x 50mm dia All Flanged Concentric Taper (Mark 9) Nr 1

5.33 80mm dia Flanged Spigot Pipe 1,000mm long (Mark 10) Nr 1

5.34 80mm dia Coupling (Mark 11) Nr 1

Scour and Overflow Pipework Schedule as shown in the drawings

5.35 150mm dia Plain ended Pipe,1400mm long with puddle flange 100mm from one end (Mark a)

Nr1

5.36 150mm dia Flange Adaptor (Mark b) Nr 1

5.37 150mm dia all Flanged gate valve to BS 5163 with extension spindle (Mark c) Nr1

5.38 150mm dia Flanged Spigot 900 bend (cut to suit on site) (Mark d) Nr 1

5.39 100mm dia Flanged Spigot Pipe,400mm long with puddle flange at 100mm from the plain end (Mark e) Nr 1

5.40 100mm dia all Flanged 900 bend (Mark f) Nr 1

5.41100mm dia Flanged Spigot Pipe, 1800mm long (Cut to suit on site) (Mark g)

Nr1

5.42 100mm dia Flange Adaptor (Mark h) Nr 1

5.43 100mm dia all Flanged 450 bend (Mark i) Nr 1

5.44 100mm dia Flanged Spigot Pipe, 420 mm long with the spigot end bevelled (Cut to suit on site) (Mark j) Nr 1

6 PUMPS

Backwash Pumps

6.1 Supply, transport to site, install, test and commission submersible pumps (1 duty, 1 standby) KSB Amarex 40-250 or approved equivalent complete with motor, base plate, fixing bolts, grouting, etc., for the following characteristics: Flow 25m3/hr, Dynamic head 26m Nr 2

7 MISCELLANEOUS WORKS

7.1 Provide and install 1500mm x 900mm open mesh cover over submersible pump room including preparation of a 55 x 55mm rebate in concrete wall.

Nr 1

7.2 Provide and install 800mm x 800mm chequered plate cover over valve chamber including preparation of a 55 x 55mm rebate in concrete wall. Nr 1

7.2 Provide and fix 200mm wide Expandite supercast rearguard R PVC or similar approved waterstop m 22

7.3 Provide and fix step irons to Backwash Water Sump Nr 8





BILL NO: 2.1-SURFACE PUMPING STATION

3.1 DEMOLITION AND SITE CLEARANCE Removal of artificial articles, objects and obstructions which are above the original surface Item 1.00

3.2 Construction of a 12 square metre Masonary pump house to accommodate the surface booster pump. The rate should include one burglar proof door complete with a lock, two windows ,lighting and switch, security lighting. Necessary electrical cabling as instructed by the site engineer-

Item 1.00

3.4 Fence/Gate

3.41 Fence made of 11 No. strands of barbed wire complete with concrete posts m 60

3.42 Gate of width 5.7mx2m high made of 3mm diameter GMS mesh welded on a 50mm diameter frame

No. 1

3.5 Install a 20m3 plastic tank on a concrete platform rate should include an inlet and outlet meter . Pipes and fittings with connection to the pump including a gate valve and a non return valve.

Item 1.00

3.6 Supply, Install, test and commission Vertically installed, multi-stage, axially-split volute casing pumps with double-entry radial impeller, mating flanges to DIN, ISO, BS or ANSI standards water pumps each of capacity 5m3/hr against 80m head. With a power rating above 5.5 KW. Include for all excavation, backfilling, demolition, pipe work, concrete works, supply test and commission a control panel, connect to the Control panel for the pumps (the controls units shall be housed in a wall mounted dust and dump proof sheet steel enclosure with hinged and lockable front door, and door switched power isolator) (system duty point shall be Q=5m3/hr and H=80 m). The pumps so selected complete with the motor shall have a minimum efficiency of 75% at system duty point. The motors shall be minimum class IE3 efficiency class. The motor shall be to minimum IP 55 running at 1500/2900rpm with 50Hz frequency. The pump must be capable of maintaining efficiency over a large pumping range but shall not lose efficiency by more than 5% on 10% either side of the duty point. the quotation to include for all the valves, non return valves , elbows and all other fittings.

Item 2.00


WATER SUPPLY SYSTEM -SURFACE PUMPING STATION


BILL NO 3.1 -PUMPING STATION : Page 17 of 35


ITEM No. DESCRIPTION UNIT QUANTITY RATE

(KES) AMOUNT

(KES)

A2 ; TESTING OF THE WORKSTesting, Disinfection & Flushing of Pipelines and Fittings. Pressure Testing exc.12 bar but not exc.25 bar,

A260 Testing and Commissioning of pipes as specified.Pipe Size OD - 160mmSDR 13.6 PN 12.5 Bar m 1875

A290 Flushing and disinfection of the Pipes as specified. Pipe Size OD - 160mmSDR 13.6 PN 12.5 Bar m 1875

D ; DEMOLITION & SITE CLEARANCE

D100 Clear site along the pipeline for all rubbish, vegetation, bushes and grasses and artificial articles above the original ground surface.

ha 0.75

D2 ; TREESD210 Removal of trees, Girth : 500mm - 1m nr 5.0D310 Removal of tree stumps, diameter more than 1m nr 5.0

I PIPEWORK – PIPESI7 ; HDPE PIPES

HDPE Pipes PE 100 PN 10 With ISO CertificationBends and fittings to be PN 10The pipes and bends are to be laid in accordance with Drawings provided and engineers instructions

I722 OD 160 in trenches with depth range not exceeding 1.5 m 1175I723 OD 160 in trenches with depth range between 1.5-2.0 m 400I724 OD 160 in trenches with depth range between 2.0-2.5 m 300

J PIPEWORK – FITTINGS AND VALVES

J63 HDPE BENDS

Bends double flanged long radius;45ºJ611 Nominal Bore: 160 nr 2

Bends double flanged long radius; 30ºJ611 Nominal Bore: 160 nr 1

KERICHO COUNTY STRATEGIC INTERVENTION PROJECT 2018/2019TUIYOBEI TRANSMISSION NETWORK

BILL No. 4.1 - TRANSMISSION MAIN - LINE TY TM 1


BILL NO 4.1 TY TM 1 : Page 18 of 35



(KES) AMOUNT

(KES)



Bends double flanged long radius; 22.5ºJ611 Nominal Bore: 160 nr 2


ISOLATION VALVE 2

Flanged Adaptor;J353 PN 10 DN 160 Flanged Adaptor nr 4

SpigotJ383 PN 10 DN 160 Flanged Spigot L = 1 m nr 4

Couplings, wide range type;J393 PN 10 DN 160 Coupling nr 4

Flanged Gate valves;J813 PN 10 DN 160 Flanged Gate Valve nr 2

Air Valves: triple action, anti surge, anti shock, c/w separate female threaded stop cock/isolatorand isolating valve, PN 10 and all associated fittings as shown in the drawings

J861 Nominal bore: 50mm nr 2

Couplings, wide range type;J393 PN 10 OD 80 Coupling nr 4

Flanged spigotsJ383 PN 10 DN 80 Flanged Spigot (L = 1m) nr 4

Flanged Tee;J333 PN 10 DN 160/80 Flanged Reducing Tee nr 2

Reducing Flange;J391 PN 10 DN 150/80 Reducing Flange nr 2






(KES) AMOUNT

(KES)



Flanged AdapterJ351 PN 10 DN 80 Flanged Adapter nr 2


Wash outs; with integral isolating valve; fittings and outfall structure as per the standard drawing As specified in the drawing


K ; PIPEWORK – MANHOLES AND PIPEWORK ANCILLARIESK2 ; CHAMBERS

K231

Provide all materials and construct valve chambers of internal dimensions as shown on the standard drawings and the fitting schedule for the specific nodes . Include for supply and fixing of precast concrete cover and step irons, etc as detailed in drawings. Depth n.e. 1.5m

nr 2

WASH OUT OUTFALLAs specified in the drawing

K211.1 Depth: not exceeding 1.5m nr 2

AIR VALVE CHAMBERAs specified in the drawing


K6 CROSSINGSInclude for all works associated with the crossing As specified River crossing

K612 Pipe bore: not exceeding 300 mm (Provisional) m 10

K7 REINSTATEMENTSBreaking up, temporary and permanent reinstatement of roads. (Provisional)

K732 Pipe bore not exceeding 300mm m 15TOTAL CARRIED FORWARD TO NEXT PAGE





(KES) AMOUNT

(KES)



K8 OTHER PIPEWORK ANCILLARIES

K820.1 Marker posts (Pipeline) nr 10

K820.3 Marker posts (Washout Valve) nr 2

K820.4 Marker posts (Air Valve) nr 2

K900Marker tape / strip for pipeline location, pigmented low density polyethylene and aluminium foil in a bright colour continously labelled "DANGER PIPE" in English

m 1875

L SUPPORTS AND PROTECTION ANCILLARIES TO LAYING AND EXCAVATION

L32 BEDS

L321Selected excavated granular material as per specifications. Beds 100mm thick, pipeline nominal bore 160mm

m 15

L7 CONCRETE STOOLS AND THRUST BLOCKSConcrete Class 20

L71 Volume:- not exceeding 0.1 m³L713 To pipes not exceeding 300mm nr 7






(KES) AMOUNT

(KES)

A2 ; TESTING OF THE WORKSTesting, Disinfection & Flushing of Pipelines and Fittings. Pressure Testing exc.12 bar but not exc.25 bar,

A260 Testing and Commissioning of pipes as specified.Pipe Size OD - 110mm HDPE SDR 13.6 PN 12.5 m 2350

A290 Flushing and disinfection of the Pipes as specified. Pipe Size OD - 110mm HDPE SDR 13.6 PN 12.5 m 2350



ha 0.94



HDPE Pipes PE 100 PN 10 With ISO CertificationBends and fittings to be PN 10The pipes and bends are to be laid in accordance with Drawings provided and engineers instructions



J63 HDPE BENDS



TRANSMISSION NETWORK -TUIYOBEI TO KIPCHORIAN TANKKERICHO COUNTY STRATEGIC INTERVENTION PROJECT







ISOLATION VALVE 4




















K231


nr 2








K732 Pipe bore not exceeding 300mm m 15TOTAL CARRIED FORWARD TO NEXT PAGE









m 2350


L32 BEDS

L321Selected excavated granular material as per specifications. Beds 100mm thick, pipeline nominal bore 110mm

m 15








(KES) AMOUNT

(KES)

A2 ; TESTING OF THE WORKS

Testing, Disinfection & Flushing of Pipelines and Fittings. Pressure Testing exc.12 bar but not exc.25 bar,

A260 Testing and Commissioning of pipes as specified.Pipe Size OD - 63mm m 640

A290 Flushing and disinfection of the Pipes as specified. Pipe Size OD - 63mm m 640



ha 0.26



HDPE Pipes PE 100 PN 10 With ISO Certification

Bends and fittings to be PN 10The pipes and bends are to be laid in accordance with Drawings provided and engineers instructions



J63 HDPE BENDS



KERICHO COUNTY STRATEGIC INTERVENTION PROJECTTRANSMISSION NETWORK -TUIYOBEI INTAKE No.1 TO KIPSIRICHET TANK

BILL No. 4.3 - TRANSMISSION MAIN - LINE TY RM 2


BILL NO 4.3 TY RM-1 : Page 26 of 35




ISOLATION VALVE 4




















K231


nr 2








K732 Pipe bore not exceeding 300mm m 15










m 640


L32 BEDS

L321 Selected excavated granular material as per specifications. Beds 100mm thick, pipeline nominal bore 110mm

m 15








(KES) AMOUNT

(KES)

A2 ; TESTING OF THE WORKSTesting, Disinfection & Flushing of Pipelines and Fittings associated with the tank and the tank itself. Pressure Testing exc.12 bar but not exc.25 bar. Testing to include for water tightness as specified in the specifications

A260.1 Testing and Commissioning of the installed tank as specified (50m3)

nr 1.00

A260.2 Testing and Commissioning of pipes as specified. m 75.00

E3 ; EXCAVATIONS FOR FOUNDATIONSExcavate below stripped surface to formation level in common material. Retain approved material for back-filling / filling and cart away unsuitable material to tip as directed by Engineer

E311 Excavation of topsoil depth not exceeding 0.25m m3 6

E322 Excavation of material other than top soil rock or artificial hard material depth 0.25 - 0.5m m3 6

E323 Excavation for material other than topsoil rock or any other artificial hard material; maximum depth 0.5 - 1.0 m m3 3

E33 Excavation of foundation in rock m3 5

E5 ; Disposal of Excavation Material

E512 Trimming of excavated surfaces; material other thantopsoil, rock or artificial hard material m2 10.7

E524 Preparation of excavated surfaces to receive fill andpermanent works; materials other than topsoil or rock m2 10.7

E525 Preparation of excavated surfaces to receive fill andpermanent works; in rock m2 10.7

E531 Disposal of excavated topsoil m3 6.49

E532 Disposal of excavated material other than top soil rock or artificial hard material m3 9.09

E532 Disposal of excavated rock m3 5.00

E6 ; FILLING

E632 THICK RED SOIL COMPACTED TO 98% MDD in layers not exceeding 200mm as shown by RE m3 10.39

E635 Provide and fill with imported 300mm gravel compacted to 98% MDD in layers not exceeding 150mm m3 3.90

E637

Provide and fill hard core with hard basaltic or equivalent stone, well compacted and blinded with crushed stone to a finished thickness of 250mm under the reservoir and valve chamber to stated depth or thickness

m3 9.09


BILL NO 4.4 CONSTRUCTION AND REHABILITATION OF TANKS

BILL NO. 4.4.1-CONSTRUCTION OF A 50M3 MASONRY TANK


BILL 4.4 TANKS : Page 30 of 35


F ; INSITU CONCRETE

Provision of Concrete

F253Designed mix; Grade C35A; Cement to BS12 and 20mm maximum aggregate size m3 10.34

F400Prescribed mix; Grade C15P; 20 mm aggregate; Cement to BS12 m3 1.95

Placing of Concrete

Place, compact and cure concrete in the following elements of the structure as per details on Drawings

Mass Concrete; Class 15/20F6 ; Mass concrete

F611 75mm thick lean concrete blinding with mix ratio (1:3:6) under the reservoir base slab, foundation and valve chamber

m3 1.95

F7 ; Reinforced Concrete class 30

F723 Floor slab, bases and foundation footings m3 4.91 F732 Suspended slabs (Top roof) thickness 200mm m3 3.93 F785 For overflow chamber complete with the base opening m3 1.50

G ; CONCRETE ANCILLARIES

G2 ; Fair Finish Formwork

G215 Plane vertical sides for both external and internal wallsm2 81.22

G5 ; Reinforcement; deformed high yield steel bars to BS 4449, HT = 425 N/mm2

G529 Nominal size 8,10,12,16,25 mm Ton 1.03

G562 Steel fabric BS4483 ; A252 square mesh; nominal mass 3 - 4kg/m2 LS

G6 ; Joints

G611 Open surface plain;average width n.e. 0.5 m m 19.64 G621 Open surface with filler; average width n.e.0.5 m m 4.00 G652 Plastic water stops average width 150mm - 200 mm m 4.00

G654Plastic or rubber water stop in floor/wall base joints; Average width 350mm m 4.00

G670 Sealant 20 x 20 mm rebate with plysulphide joint sealant m 8.00

Inserts; Excluding supply of the fittings

G832.1 Inlet, outlet, overflow and washout pipe inserts intoconcrete Nr 4.00

G832.2 Roof vents inserts in concrete Nr 4.00 G832.3 Roof drain inserts in concrete Nr 4.00 G831.1 Perforated Roof drain pipe inserts in concrete m 22.00





SITE WORKS

J ; PIPEWORK – FITTINGS AND VALVES

1299

Supply of Precast concrete pipes to be used as underground drainage. The rate to include for, supply instalation and backfilling of the pipes as per Engineers instruction

PC SUM 100,000

1999

Supply of pipes and fittings to be used for The connection of the tank, inlet , outlet, overflow and scour as shown in the drawings. Rate to include for laying jointing and any other fittingd used for connection

LS

PIPE WORK - MANHOLES AND PIPEWORK ANCILLARIES.

K233.1Reservoir Scour/Overflow chamber without roof cover slab as detailed; 200mm thick walls, depth 1.0 - 2.0m, 4m2 plan area

No. 1.00

K234.1Reservoir Inlet Valve Chamber as detailed; 200mm thick walls, depth 1.0 - 2.0m, 4m2 plan area

No. 1.00

K234.2Reservoir Outlet Valves Chamber detailed; 200mm thick walls, depth 1.0 - 2.0m, 4m2 plan area

No. 1.00

Miscellaneous MetalworkRate to include supply, delivery, fixing and inclusive of foundation where applicable

N130.1 Stainless Steel internal access ladder with safety loops, stringers and landing rail m 4.00

N130.2 Galvanised Mild Steel external access ladder with landing rails and stringers m 4.00

N190Provide and fix 6 mm sheet metal access cover with 40x40 angle iron frame with latch and safety lock for valve chamber and reservoir

No 1.00

N190 Galvanized mild steel air vents as shown on the drawings. m 4.00

CLASS U: BRICKWORK, BLOCKWORK AND MASONARY

U721200mm thick ashlar masonry vertical straight walls; thickness 150 - 250 mm. To include mortar and fixing reinforcement at the joints

m2 46.97

CLASS V: PAINTING

V653 Two coats of cement paint on rendered external walls. m2 46.97

PROVISIONAL SUM FOR REHABILITATION OF EXISTING TANKS

4.4.1General cleaning, rehabilitation of the existing Tuiyobei tank including water proofing , installation of fittings , water meter and painting of the existing tank.

P.C. SUM 200,000

4.4.2General cleaning, rehabilitation of the existing Kipsirechet tank including water proofing , installation of fittings , water meter and painting of the existing tank.

P.C. SUM 300,000






(KES) AMOUNT

(KES)

Installation , testing and commisisonning of various sections of distribution pipes

5.1a

Installation testing and commissioning of a OD 75 HDPE SDR 17 with a PN rating of 10 bars distribution line , rate should include excavation, backfilling, compaction, pipe fittings and section valves and reinstatement in sections where there are roads and crossing in river sections

m 5010

5.2b

Installation testing and commissioning of an OD 63 PVC with a PN rating of 10 bars distribution line , rate should include excavation, pipefittings and reinstatement in sections where there are roads and crossing in river sections

m 5200

PROVISIONAL SUM FOR REHABILITATION / REPLACEMENT OF SECTIONS OF EXISTING PIPES AND INSTALLATION OF NEW DISTRIBUTION PIPES AS MAY BE REQUIRED

5.3Rehabilitate sections of the existing distribution network and/or install new distribution lines as may be required and instructed by the Engineer

P.C. SUM 1,000,000



KERICHO COUNTY STRATEGIC INTERVENTION PROJECTDISTRIBUTION NETWORK

BILL No. 5. - DISTRIBUTION LINES

BILL NO 5.1-5.2 TY DM 1 : Page 33 of 35



(KES) AMOUNT

(KES)

NOTE: THE WHOLE OF THIS BILL IS PROVISIONAL

A411 LabourPreliminary and General Items relating to Contractor's establishment,provision and maintenance of key staff and equipment are subject to theconditions stipulated in of trade, Contractors overheads and profit. Onlytime engaged upon work instructed by the Engineer under this Bill will bepaid for.

The rates inserted herein should include for all costs such as insurance,travelling time, overtime, accommodation, use and maintenance of smalltools of trade, supervision, overheads and profit. Only time engagedupon work will be paid for:

A411.1 Unskilled labour hr 400A411.2 Foreman hr 200A411.3 Driver hr 400A411.4 Mason hr 300A411.5 Carpenter hr 150A411.6 Plumber hr 150A411.7 Electrician hr 100A411.8 Plant Operator hr 100A411.9 Supervisor hr 200

A411.10 Pipelayer hr 250A411.11 Painter hr 100A411.12 Concretor hr 300A411.13 Technician hr 150A411.14 Watchman hr 150

A413 Materials

Materials shall comply with the relevant Technical Specifications andshall be subject to the approval of the Resident Engineer. The rate toinclude for delivery, storage, handling, Contractor's overheads, etc.

A413.1 Building sand ton 50A413.2 Ordinary portland cement in 50 kg bags No. 100A413.3 Fine aggregate ton 50A413.4 Coarse aggregate ton 50A413.5 Dressed stone 150 mm m2 50A413.6 200mm Blockwork m2 50A413.7 Reinforcement fabric mesh. m2 50A413.8 Reinforcement steel ton 0.5A413.9 Concrete Class 25 m3 10

A413.10 Imported Fill m3 100A413.11 Hardcore m3 80A413.12 Shuttering timber m2 100

KERICHO COUNTY STRATEGIC INTERVENTION PROJECTTUIYOBEI

BILL NO 6 DAYWORKS


BILL NO 6 DAY WORKS : Page 34 of 35



(KES) AMOUNT

(KES)

A413.13 Petrol L 800A413.14 Diesel L 800A413.15 Lubricants L 250A413.16 Chlorinated Paint L 50A413.17 Emulsion Paint L 50A413.18 Gloss Paint L 50

A414 Percentage adjustment to Provisional Sum for Daywork Materials %

A415 PlantRates to include for all operation and maintenance of plant, cost of fueling and lubrication, etc.

A415.1 Excavator hr 25A415.2 Grader Tractor hr 25A415.3 Mobile generator 15 kVA hr 100A415.4 4 WD Pickup 1 tonne hr 100A415.5 Concrete mixer type 5/3.5 hr 50A415.6 Concrete dumper 0.5 cu.m. hr 50A415.7 Concrete vibrator poker type N.D. 50 mm hr 50A415.8 Dewatering pump 50mm dia suction end hr 150A415.9 Jack Hammer 25kg hr 100

A415.10 Mobile Crane 5 tonnes hr 50A415.11 Air Compressor (5,000 l/min) hr 50A415.12 Tipper Truck 7 tonne hr 50

A415.13 Oxy-acetylene cutting and welding set including oxygen and acetylene gases. hr 50

A415.14 Electrical welding set including electrodes hr 50A415.15 Pressure Testing Equipment (including diesel engine for pump) hr 50



BILL NO 6 DAY WORKS : Page 35 of 35

Date post:	18-Oct-2021
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