REPAIR AND MAINT TO DI/CI/PPR PIPE LINES, PUMP SETS, MOTOR, CHLORONOME PLANTS, CLEANING OF OH TANKS, WATER TESTING IN EVERY QUARTERS, WATER TREATMENT PLANT, UPKEEP AND IMPROVEMENT OF WATER SUPPLY INSTALLATION AND CONNECTED WORKS AT 273 SU AFS UNDER

Amount

Excavation in trenches in soft/ loose soil n.exc 1.5 mtr wide n.exc 1.5 mtr deep getting out soil complete all as specified and directed.

Returning filling in including spreading leveling well ramming in layers n.exc 25 cm thick in a layers complete all as specified and directed.

Removing excvated material (Soil) n.exc 50 mtr and depositing where directed at a level n.exc 1.5 mtr above the starting point complete all as specified and directed.

Boring of road for laying of pipe n.exc 90 cm below ground level complete all as specified and directed.

M&L for cement concrete, 1:3:6, type C2 (using 40 mm graded stone aggregate) for making good to disturbed surface of road etc. complete all as specified and directed.

Taking up 150 mm CI water mains (including all fittings), with spigot and socket ends and lead joints including burning out joints and recovering lead complete all as specified and directed.

All as per item No. 6.00 above, but size of 100mm complete.

Relaying only old existing CI pipe line of size 150 mm bore obtained from above item No. 6.00 complete all as specified and directed.

Relaying only old existing CI pipe line of size 100 mm bore obtained from above item No. 7.00 complete all as specified and directed.

Supply and laying centrifugualy cast spun ductile iron (DI) spigot & socket end pressure pipe 150 mm dia of K-9 in trenches complete all as specified and directed.

All as per item No. 10.00 above, but of 100 mm dia complete.

Taking up or down GI water tubing 100 mm bore including fitting connections and cleaning tubing, fitting/ cutting threading of serviceable tubing for relaying and removal of unserviceable tubing complete all as specified and directed.

All as per item No. 12.00 above, but for 80 mm bore complete.

All as per item No. 12.00 here-in-before, but for 50 mm bore complete.

All as per item No. 12.00 here-in-before, but for 40 mm bore complete.

All as per item No. 12.00 here-in-before, but for 25 mm bore complete.

All as per item No. 12.00 here-in-before, but for 20 mm bore complete.

All as per item No. 12.00 here-in-before, but for 15 mm bore complete.

Re-fixing only old serviceable GI pipe incl fittings and connection in new or old position (Pipe obtained from item No 12 above) of size 100 mm bore complete all as specified and directed.

All as per item No. 19.00 above, but for (Pipe obtained from item No 13 above) 80 mm bore complete.

All as per item No. 19.00 here-in-before, but for (Pipe obtained from item No 14 above) 50 mm bore complete.

All as per item No. 19.00 here-in-before, but for (Pipe obtained from item No 15 above) 40 mm bore complete.

All as per item No. 19.00 here-in-before, but for (Pipe obtained from item No 16 above) 25 mm bore complete.

All as per item No. 19.00 here-in-before, but for (Pipe obtained from item No 17 above) 20 mm bore complete.

All as per item No. 19.00 here-in-before, but for (Pipe obtained from item No 18 above) 15 mm bore complete.

Supply and laying 100 mm bore GI water tubing medium grade with all fittings in trenches complete all as specified and directed.

All as per item No. 26.00 above, but for 80 mm bore complete.

All as per item No. 26.00 here-in-before, but for 50 mm bore complete.

All as per item No. 26.00 here-in-before, but for 40 mm bore complete.

All as per item No. 26.00 here-in-before, but for 25 mm bore complete.

All as per item No. 26.00 here-in-before, but for 20 mm bore complete.

Supply and laying 15 mm bore GI water tubing medium grade with all fittings for fixing to wall or laid in floor / ground complete all as specified and directed.

Supply and laying/ fixing 160 mm bore polyprolene random pipe (PP-R) PN 16 in three layer incl fixing of all fittings made out of PP–R as required for fixing all fittings in trenches complete all as specified and directed. Make – SFMC/PRINCE/RELIANCE/SAVOIR-FAIR/KPT.

All as per item No. 33.00 above, but 110 mm dia complete.

All as per item No. 33.00 here-in-before, but 90 mm dia complete.

All as per item No. 33.00 here-in-before, but 63 mm dia complete.

All as per item No. 33.00 here-in-before, but 50 mm dia complete.

All as per item No. 33.00 here-in-before, but 32 mm dia complete.

All as per item No. 33.00 here-in-before, but 25 mm dia complete.

Supply and laying/ fixing 20 mm bore polyprolene random pipe (PP-R) PN 16 in three layer incl fixing of all fittings made out of PP –R as required for fixing to wall or laid in floor / ground all as specified and directed. Make: SFMC/PRINCE/RELIANCE/SAVOIR-FAIR/KPT.

M&L for attending pipeline breakdown of CI pipe of 80 mm dia by making lead joint with lead and spun yarn and moulding clay including takin up/down pipe using chain pulley or rope and excavation in any type of soil including returning filling and removal of soil and testing of pipe line complete all as specified and directed.

All as per item No. 41.00 above, but 100 mm dia complete.

All as per item No. 41.00 here-in-before, but 150 mm dia complete.

All as per item No. 41.00 here-in-before, but 200 mm dia complete.

M&L for attending pipeline breakdown of DI pipe of 80 mm dia by making rubber tyton joint with rubber seal gasket joint including takin up/down DI pipe using tripod and chain pulley or rope and excavation in any type of soil including returning filling and removal of soil and testing of pipe line complete all as specified and directed.

All as per item No. 45.00 above, but 100 mm dia complete.

All as per item No. 45.00 here-in-before, but 150 mm dia complete.

All as per item No. 45.00 here-in-before, but 200 mm dia complete.

S&F in repair, gun metal gate valve (screwed) with iron wheel head, screwed both ends for iron/ PPR pipe of size 50 mm dia complete all as specified and directed.

All as per item No. 49.00 above, but 40 mm dia complete.

All as per item No. 49.00 here-in-before, but 25 mm dia complete.

All as per item No. 49.00 here-in-before, but 20 mm dia complete.

All as per item No. 49.00 here-in-before, but 15 mm dia complete.

M&L for construction of valve pit of size 120x 120 x 120 cm (Internal dimension) incl necessary earth work and MS sheet 2 mm thick cover with angle iron frame 40 x 40x 6mm including dismantling of valve pit with cover complete all as specified and directed.

All as per item No 54.00 above, but of size 90 x 90 x90 cm complete.

M&L for tyton ring rubber joint of best quality ISI marked suitable for ductile iron pipe complete all as specifeid and described for 150 mm dia pipe.

All as per item No. 56.00 above, but for 100 mm dia pipe complete.

M&L in repair, GI pipe line by cutting the damaged portion, threading both sides, insertion of same bore GI long screw, tesing for leak proof in position complete all as specified and directed. Note: Excavation and earthwork shall be measured separately.

S&F flange made out of PPR with 'O' Ring with nut, bolt and rubber gasket complete suitable for 90 mm bore complete all as specified and described.

S&F GI flange for 80 mm bore pipe, heavy duty with suitable size nuts and bolts and double washers including 6 mm thick rubber gasket including taking out unserviceable one complete all as specified and directed. Make: TATA/JINDAL/SURYA ROSHNI/ PRAKASH.

Taking down old unserviceable sluice valve from existing position and supply and fixing cast iron sluice valve 200 mm bore, conformig to IS: 14846 clockwise dosing with flanged ends and iron wheel including necessary joints by means of bolts, nuts washers and rubber gaskets complete all as specified.

All as per item No. 61.00 above, but 150 mm dia complete.

All as per item No. 61.00 here-in-before, but 100 mm dia complete.

All as per item No. 61.00 here-in-before, but 80 mm dia complete.

M&L for run lead joints in position for cast iron spigot and socket ends for size 200 mm dia complete all as specified and directed.

All as per item No. 65.00 above, but 150 mm dia complete.

All as per item No. 65.00 here-in-before, but 100 mm dia complete.

All as per item No. 65.00 here-in-before, but 80 mm dia complete.

M&L for cast iron bend (any type, radius and angle) size up to 200 mm bore, tapers any type, (straight, bend, increasing, decreasing or double socket etc.) Tee pieces single branch. "Y" junction, double branch, cross (flange sockets or socket and spigot) collars, caps and plugs complete all as specified and directed.

Drilling and tapping of CI water line 15 mm to 25 mm for branch connection complete all as specified and directed.

S&F male threaded socket complete suitable for 32 mm bore complete all as specified and directed.

All as per item No. 71.00 above, but 25 mm complete.

All as per item No. 71.00 here-in-before, but 20 mm complete.

M&L for taking out existing filter media like sand, gravel & ferminex from filtration plant of capacity 10,000 gallon per hour including soda & Alum Pots & removing from site and cleaning the internal surface of filtration plant with soda & Alum Pots with using PVC/steel wire brushes to remove all scales, iron particles and finally clay & other foreign particles with clean water complete all as specified and directed.

Taking out existing unserviceable PVC nozzles and supply and fixing new PVC double deck type PP strainer nozzle of size 10mm to 15mm (3/8” to ½” inch) dia, push type complete all as specified and directed.

M&L for preparation of old painted internal steel surface of filtration plant shell painting with one coat of black bituminous paint suitable for drinking purpose of area exceeding 10 cm in width or girth not otherwise described complete all as specified and directed.

M&L for preparation of old painted external surface of filtration plant shell painting with first quality of synthetic enamel paint (grey shed) exceeding 10 cm in width or girth not otherwise described complete all as specified and directed.

M&L for packing gravel of size 12mm to 25mm of new filter media in layers of approved quality obtained from ‘Barakar River’ complete all as specified and directed.

All as per item No. 78.00 above, but gravel of size 6mm to 12mm.

All as per item No. 78.00 here-in-before, but gravel of size 3mm to 5mm.

All as per item No. 78.00 here-in-before, but sand of size 16/30 mesh.

M&L for packing of chemical of ‘Feriminex’ (MNO2) catalytic agent of size 1/16”x1/32 inches in layers complete all as specified and directed.

Taking water sample for chemical analysis test for portability of water from approved govt lab like National Test House Kolkata/ RV Bridge Kolkata complete all as specified and directed.

Replacement of unserviceable water pressure gauge with new pressure gauge capacity 7 kg/sqcm to 10 kg/sqcm complete all as specified and directed.

Taking out old unserviceable rubber gasket from position with taking out of nuts, bolts etc and supply and fixing new rubber gasket of size 75cm outer dia, 3mm thick rubber sheet of approved quality fixed with suitable size & dia mild steel machine made nuts, bolts & washers of required size & numbers complete all as specified and directed. Note: Nuts, bolts & washers shall be measured & paid separately under relevant item here-in-before.

All as per item No. 85.00 above, but of size 45cm outer dia.

S&F mild steel machine made nut, bolt & washer of size 15mm(5/8”) dia and 75mm (3”) long or nearest suitable sizes for top cover and side cover of Soda/Alum pot complete all as specified and directed.

S&F fully automatic star-delta starter in sheet metal enclosure type MN with single phase protection feature suitable for motor rating AC-3 phase, 415V, 12.5 HP, 9.3 kw, 9-14 A range complete all as specified and directed.

Lifting and taking out complete submersible pump set 5 HP to 15 HP alongwith the column pipes with the help of chain pulley block from borewell after disconnecting electrical connections from panel, disconnecting from suction and delivery pipe lines, disconnecting column pipes, testing electric motor to ensure its actual condition, separating pump & motor from coupling, reassembling and lowering pump & motor into borewell complete, connecting, testing and commissioning alongwith connected items such as MS column pipe, cable, re-fixing after receiving repaired and tested submersible pump with new nuts & bolts, rubber packing with proper alignment and making electrical connection, binding of cable with column pipe with nylon rope complete including testing complete all as specified and directed.

Transportation of submersible pump set 3 phase any make and capacity 5 HP to 15 HP from pump house to contractor work shop for carry out necessary repair work to pump set submersible and transporting it back to site of water supply installation of AF Stn area complete all as specified and directed.

Dismantling of submersible motor any make and any capacity 5 HP to 15 HP and reassembling complete after carry out necessary repair work & testing complete for smooth working to entire satisfaction of Engineer-in-charge. Note: New parts/components to be replaced shall be measured and paid separately under supply only.

M&L for rewinding of submersible motor of capacity 10 HP to 12.5 HP 3 phase 400/415 volts any make and capacity as mentioned below existing size and gauge of PVC insulated single core copper winding wire submersible including all insulating material of approved make complete all as specified and directed.

Supply only upper and lower housing bushes of any material complete suitable for 5 HP to 15 HP complete all as specified and directed.

Supply only Impeller suitable for 5 HP to 15 HP submersible motor complete all as specified and directed.

Supply only stainless steel bush each set suitable for 5HP to 15 HP submersible motor complete all as specified and directed.

Supply only 'O' ring kit and oil seal kit suitable for any capacity complete all as specified and directed.

Supply only sand guard suitable for any capacity complete all as specified and directed.

Supply only water seal suitable for any capacity complete all as specified and directed.

Repair of bowl bush of housing by proper machine work of housing and pump soft & replacement of bowl bush for 5 HP to 15 HP complete.

Supply only rubber packing 20mm thick consisting of 8/6" holes for 100 mm to 150 mm dia column pipe complete all as specified and directed.

M&L for jointing the submersible cable by jointing kit of suitable size by means of jointing material & making the leak proof jointing complete all as specified and directed by Engineer-in-Charge.

Taking down old unserviceable sluice valve from existing position and supply and fixing 100mm bore cast iron sluice valve conforming to IS-14846 PN 1.6 clockwise dosing with flanged ends and iron wheel including necessary joints by means of bolts, nuts, washers and rubber gaskets complete all as specified and directed.

All as per item No. 102.00 above, but size of 150 mm bore complete.

M&L for steel work in tubular trusses including special shaped washer etc complete using ERW or induction butt welded tubes conforming to IS: 1161-1979 grade St-240 complete all as specified and directed.

M&L for Pre- painted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/ cladding to wall, fixed with self tapping screws complete all as specified and directed.

M&L for Pre- painted galvalume aluminium zinc coating GI based plain steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/ cladding to wall, fixed with self tapping screws complete all as specified and directed.

M&L for hardcore of gauge n.exc 63mm, deposited, spread and levelled in layers n.exc 15cm thick, watered and rammed to a true surface complete all as specified and directed.

M&L for cement concrete, 1:2:4, type B2 (using 40 mm graded stone aggregate) in foundation filling and mass concrete complete all as specified and directed.

M&L for brickwork with subclass 'B' bricks straight or curved on plan to any radius in half brick thick walls built in cement mortar 1:4 complete all as specified and directed.

M&L for rendering 10mm thick on fair faces of brick work or concrete surfaces cement plaster 1:4 complete all as specified and directed.

M&L for applying three coats of white washing on walls of new plastered surface complete all as specified and directed.

M&L for preparation of new steel and iron surface of any description, over 10 cm width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide, zinc chrome primer complete all as specified and directed.

M&L for plate (plain or chequered) channel, square cut or notched (ordinary and counter sunk) forming holes without any attachment complete all as specified and directed.

M&L for development of borewell with air compressor of capacity upto 300 PSI till sand, mud, silt-free water of potable quality is obtained alongwith lowering and fixing of 10mm dia flexible PVC layered steel rope for holding submersible pump inside the casing pipe and fixed outside at the mid of MS channel complete all as specified and directed. Note: Air compressor, diesel engine, pump and fuel shall be arranged at site and cost for the same to be included in unit rate.

Supply and laying/ fixing 90 mm bore polyprolene random pipe (PP-R) PN 16 in three layer incl fixing of all fittings made out of PP–R as required for fixing to wall or laid in floor/ ground complete all as specified and directed.

All as per item No. 115.00 above, but 63 mm dia complete.

All as per item No. 115.00 here-in-before, but 50 mm dia complete.

M&L for attending pipeline breakdown of CI/ DI pipe of 80 mm dia by making lead joint with lead and spun yarn and moulding clay including taking up/down pipe using chain pulley or rope and excavation in any type of soil including returning filling and removal of soil and testing of pipe line complete all as specified and directed.

All as per item No. 118.00 above, but 100 mm dia complete.

All as per item No. 118.00 here-in-before, but 150 mm dia complete.

M&L for construction of valve pit of size 120x 120 x 120 cm (Internal dimension) incl necessary earth work and MS sheet 2 mm thick cover with angle iron frame 40 x 40x 6mm including dismantling of valve pit with cover complete all as specified and directed.

Drilling and tapping of CI water line 15 mm to 20 mm for branch connection complete all as specified and directed.

NOTES :- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum.

M/S MANAS MITRA (BID ID -3165646)

M/S Banerjee construction co (BID ID -3166008)

SUNIL DAS AND CO (BID ID -3165168)

SHRI P P SHARMA (BID ID -3165014)

NIRANJAN SARKAR (BID ID -3164639)

HALDER ENTERPRISERS (BID ID -3164646)

YADAV CHETTRI (BID ID -3165846)