SPECIAL REPAIR TO BORE HOLE WITH CONNECTED ITEMS AT PUMP HOUSE NO. 10 AT AF STN BAREILLY

Amount

M&L for drilling trial bore by rotary/ reverse rotary method in any type of strata consisting of 250mm dia drill bit for depth up to 200m in sequence from ground level as given below for different bore wells complete as per IS -2800, part -1, 1991. The following test and reporting shall be carried out by the contractor and approved by GE all as per IS -2800, part 1 1991:- (i) Recording the well discharge during drilling by a 90 degree V- notch. (ii) Recording the water bearing horizon. (iii) Taking the samples from the bore well cutting for every 3m interval and every change in strata if less than 3m. (iv) Preparation of litho logs based on these samples. (v) Drill time log to be prepared and prescribed. (vi) Aquifer performance tests at constant discharge with draw down and recovery reading.

M&L for development of trial bore to be reamed by suitable size of bit to accomaodate (300x200) mm dia assembly pipes leaving 5" granual space around assembly pipes from 250mm to 675 mm for 50 RM from ground level complete all as specified and as directed.

M&L for development of trial bore to be reamed by suitable size of bit to accomaodate (300x200)mm dia assembly pipes leaving 5" granual space around assembly pipes from 250mm to 525 mm from exceeding depth of 50 RM but not exceeding 220 meter below ground level complete all as specified and as directed.

Supplying and assembling including jointing, lowering & fixing in position plain mild steel sheet casing (seamless) pipe 300mm bore of thickness 6.0mm conforming to IS: 4270-2001, pipe jointed and welded with coupler rings, Welding shall be done through out the circumference of the pipe and coupler rings both sides complete all as specified and directed.

Supplying and assembling including jointing, lowering & fixing in position plain mild steel sheet casing (seamless) pipe 200mm bore of thickness 6 mm conforming to IS: 4270-2001, pipe jointed and welded with coupler rings, Welding shall be done through out the circumference of the pipe and coupler rings both sides complete all as specified and as directed.

Supplying and assembling including jointing, lowering & fixing in position ERW slotted mild steel sheet casing (seamless) pipe 200mm bore of thickness 6 mm confirming to IS: 4270-2001, pipe jointed and welded with coupler rings, Welding shall be done through out the circumference of the pipe and coupler rings both sides complete all as specified and as directed.

S&F mild steel reducing socket 300mmx200mm including welding MS strip 4mm x 6mm (6 Nos) on each joint extended 100mm on each side complete all as specified and as directed. Note:- The wall thickness of the socket side shall not be less than 7.04mm.

Chemical and bacteriological testing of water sample from approved laboratory to ensure potability of water complete all as specified and as directed.

Supply & packing of pea gravel 3mm to 5mm size as per IS of natural shape brought directly from river bed and packing around the casing pipe/slotted pipe in the bore well to entire depth upto ground level complete all as specified and as directed.

Electric logging in pilot bore for precise delineation of granular zones as also the quality of ground water including report interpretation complete as specified. Note:- Electric logging shall be carried out by any approved Govt Agency.

M&L for development of tubewell by means of over puming high velocity with 250 PSI Air compressor all as specified in IS 8110-2000 para 3.4 complete all as specified and as directed.

Description all as per srl item no 11.00 above but by means of over pumping for subsequent hours until clear discharge as per clause 9.3 of IS 2800 (Part-1)-2009 complete all as specified and as directed. Note:- Over pumping shall be carried out by pumping the well at higher capacity not less 25% extra above the yield of well.

Yield testing of the tube well as specified and directed to determine the safe pumping capacity of tube well by continously pumping for 16 hrs complete all as specified and as directed. Note:- Cost of pumping for yield test is to be included in srl item No. 12 here-in-before.

Supply, install, lowering submersible pump, with S.S Bowl and connected with 100 mm dia column pipe by means of S.S flange and connecting SS Nipple having diffuser casing construction and impellers dynamically balanced rotor and pump shaft with impeller and motor suitable for operation on 3 phase 415 volts, complete set, head 54 Mtr, discharge range 1700 LPM not less than 40 HP including cable guard cable as per manufacturer's recommendation upto 02 run x 50 meter etc complete all as specified and as directed. Make:- kirloskar Model KS8B 4004 or equivalent as per list of makes.

S&F polypropylene rope (Stainess Steel ) 28 mm dia, ISI marked, heavy duty grade for holding the submersible motor complete all as specified and as directed. Make:- GARWARE or equivalent.

Supply & lowering 100 mm dia 3 Mtr long heavy grade MS ERW pipe with flange End including all fittings and fixtures complete all as specified and as directed.

Supply & Fixing of MS well cap of 300 mm nom bore of pipe at the top of casing pipe of bore well with locking arrangement complete all as specified and as directed.

Supply & Fixing of MS bail plug suitable for 200mm nominal bore MS pipe including its fixing arrangements complete all as specified and as directed.

S&F 2 Nos MS flat iron 150mmx16mm thick size clamp for holding to 300mm bore housing pipe including casting of PCC block of size 1200mmx1000mmx1000mm with PCC (1:2:4) type B-1 using 20mm graded stone aggregate with and including 80mm bore MS pipe- 2 No. each, 1.5 metre long with cap plug and cap top for feeding pea gravel for each bore well complete all as specified and as directed.

Supply and fixing of GI 25 mm dia bore with required length of GI pipes, clamps etc complete all as specified and directed.

S&F of pressure gauge 0 to 10 Kg/cm square range with necessary siphon and 15 mm dia stop valve including 15 mm dia GI pipe, not exceeding 0.25 Mtr in length, 15 mm dia brass bib cock on rising main including drilling tapping on GI / CI pipe line complete all as specified and as directed.

Supply and fixing of strata sample box of size (900 x 400)mm and 150 mm deep, made of 25 mm thick teak wood planks and size of sample bits 100 mm x 100 mm with front side provided with glazed hinged door shutter of size (900 x 400)mm provided with hasp & staple and painted for strata samples as found at the time of drilling the tubewell complete all as specified and directed. .

M&L for borewell chart on acrylic sheet of size 60 cm x 30 cm duly marked permanent marking including 12mm thick plywood frame, clamps for fixing on wall etc complete all as specified and as directed.

Supply, fixing and testing cast iron sluice valve class PN 1.6 heavy duty ISI marked, both ends flanged with brass spindle of size 150mm dia complete with jointing materials complete all as specified and directed.

Supply, fixing, testing cast iron non return valve class heavy duty ISI marked, both ends flanged of size 150mm including fitting for connecting the line with jointing material complete all as specified and as directed.

Supply and laying cast iron pipe 150mm bore with flanged ends, centrifugally cast, class B, in any length, laid in trenches or fixed to pillars and the like complete all as specified and as directed.

Supply & fixing for making header with cast iron fitting such as bends, tees, tapers, tail pieces, flanges collars etc of any size and shape as per site requirement conforming to ISI 538 laid in trenches/ fixed or pillars complete all as specified and directed.

M&L for rubber or fiber board gasket 3mm thick including MS nuts, bolts and washers of size 150 mm complete all as specified and as directed.

M&L for brick work with sub class 'B' bricks, straight or curved on plan exc 6m mean radius built in cement mortar (1:4) complete all as specified and as directed.

M&L for 10mm thick rendering with CM (1:4) on brick work or concrete surfaces of supporting pillar complete all as specified and as directed.

M&L for PCC (1:4:8) type D2 (using 40mm graded crush stone aggregates) as in foundation, filling and mass concrete complete all as specified and as directed.

Excavation in trenches in soft/loose soil not exceeding 1.5m wide and not exc 1.5m in depth including getting out for laying of pipe/taking out pipe/for relaying of CI Pipe/GI pile line complete all as specified and as directed.

Returning, filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25cm in soft/loose soil after laying of pipes complete all as specified and as directed.

Removal of surplus soil to a distance not exceeding 50 Mtr and depositing where directed at a level not exceeding 1.5 Mtr from the starting point complete all as specified and as directed.

M&L for horizontal boring below pavement/road, in soft/loose soil for crossing 100mm to 25mm size GI pipe lines complete all as specified and as directed.

Supply & fixing submersible copper cable flat type three core of size 10 Sqmm laid through GI Pipe as protection complete all as specified and as directed.

Material and labour for 50mm bore GI tubing light grade, galvanized laid in trenches all required fittings as in protection pipe of submersible cable laid in trenches complete all as specified and as directed.

Excavating in post holes (or similar holes) each not exc 0.5 cu. m, getting out, returning, filling in soft / loose soil and ramming earth or broken rubble mixed with earth around, in layers not exceeding 25cm, watering, and removing surplus soil to a distance not exc 50m and making good surface, complete all as specified and as directed.

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

Supply and fixing mild steel framed work structure as ladder, submersible pump lowering stand conforming to Fe 410-O or Fe 310-O by welding or screwing nut, bolt & washer, with and including applying two coats of black bituminous paint over a coat of red oxide primer complete all as specified and as directed.

Excavation over areas not exc 1.50m deep and getting out in hard/dense soil complete all as specified and as directed.

M&L for sub base 50mm thick with moorum/red bajri or laterite, spread and consolidated to required surface complete all as specified and as directed.

M&L for 75mm thick plain cement concrete (1:4:8) type D2 (using 40 mm graded stone aggregate) as in sub base/floor finishes complete all as specified and as directed.

M&L for 75 mm thick plain cement concrete (1:2:4) type B1 (using 20mm graded stone aggregates) as in hardstanding/apron etc with and inclusing necessary use and waste of formwork for lateral surpport complete all as specified and as directed.

M/S DEVENDRA KUMAR GUPTA