CA NO CWE/PM/N-27/2020-21 Special Repairs to Qty-03 borewell at various locations at af starion Palam under GE AF Palam Delhi Cantt-10

Amount

BOQ PART-I

Transportation of Reverse Rotary machine for drilling of the borewell to the site of borewell and removal of the drilling machine with all T&P and boring accessories after completion of borewell including site clearance complete, all as specified and directed by Engineer-in-Charge.

M&L for drilling & Reaming the bore hole by Reverse Rotary rig method of size 350mm dia, in any type of strata including electrologging to find out potable water strata, prepration of site by cutting the grass bushes and levelling the same including disposal of soil from the site complete, all as specified and directed by Engineer-in-Charge. Note:- GE & Engineer-in-Charge shall ensure that the depth of drilling of each borewell is decided based on the recommendations of CGWB Report Viz-a-Viz actual strata encountered at site while drilling and keeping in view the potential acquifiers for tapping of ground water so as to avoid infractuous drilling.

(a) From ground level to 60 m depth

(b) From 60 m depth to 120 m depth

(c) From 120 m depth to 150 m depth

Supply, lowering and welding MS ERW pipe of size 200mm bore having thickness 8.00mm as per IS-4270:1992 and including welding of pipe complete, all as specified and directed by Engineer-in-Charge.

Supply, lowering and welding MS ERW slotted housing pipe of size 200mm bore having thickness 8mm as per IS-4270:1992 and slot size 1.19mm and area of slot between 15 to 22% of screened area including welding of pipe complete, all as specified and directed by Engineer-in-Charge.

Supply and pouring/packing washed pea gravells of size 1.6 mm to 4.76 mm round in shape around the linear assembly to the entire depth of bore hole upto ground level complete, all as specified and directed by Engineer-in-Charge.

S&F housing clamp for 200mm dia pipe made out of flat iron 100 x 12mm thick with required bolts, nuts & washers including painting with two coats of black bitumenious paint over a coat of red oxide primer complete, all as specified and directed by Engineer-in-Charge.

S&F housing clamp for 50mm dia pipe made out of flat iron 100 x 12mm thick with required bolts, nuts & washers including painting with two coats of black bituminous paint over a coat of red oxide prime complete, all as specified and directed by Engineer-in-Charge.

M&L for well cap fabricated out of 6mm thick MS Sheet for 200mm dia bore pipe in two pieces having 80mm dia hole in centre with external bracket of flat iron of size 100mm x 6mm thick complete with nuts, bolts and washers including painting with two coats of black bituminous paint over a coat of red oxide primer complete, all as specified and directed by Engineer-in-Charge.

M&L for development of borewell by means of Revrese Rotary Rig followed by compressor of minimum 250 PSI capacity and over pumping by Submersible pump of suitable capacity untill the sand free water obtained and carrying out necessary complete, all as specified and directed by Engineer-in-Charge.

Yield test by V notch method and submitting the test report complete, all as specified and directed by Engineer-in-Charge

M&L for chemical/ bacteriological analysis and potablity test of water obtained from borewell from approved lab and submitting the report in triplicate complete, all as specified and directed by Engineer-in-Charge.

M&L for precast cement concrete 1:2:4 type B1 (using 20mm graded crushed stone aggregate) in surrounding of casing pipe of required size including embedding housing clamp including necessary form work and eartn work. The top and side of block shall be finished with 5mm thick rendering with cement mortar (1:3) complete, all as specified and directed by Engineer-in-Charge.

Supply, lowering and fixing MS column pipe ISI marked both end flanged of size 50mm dia bore in 3 m length, wall thickness 4.8mm as per IS-1239 complete including flange, welding of flange, rubber gasket, slot cutting in flanges for passing of submersible cable and nuts, bolts, tightening of submersible cable with PVC tie rope complete, all as specified and directed by Engineer-in-Charge.

M&L PCC 1:4:8 type D2 (using 40mm graded crushed stone aggregate) in foundations, filling and mass concrete complete, all as specified and directed by Engineer-in-Charge.

M&L PCC 1:2:4 type B2 (using 40mm graded crushed stone aggregate) in foundations, filling and mass concrete complete, all as specified and directed by Engineer-in-Charge.

S&F MS bail plug of size 200mm dia fixed and welded complete, all as specified and directed by Engineer-in-Charge.

Supply only Strata chart and sample strata box with glass door/shutter for keeping strata samples collected, in PVC transparent Jars. Box shall have internal dimensions 1000mm x 600mm x 100mm (LxBxD) with pigeon holes of dimensions 15cm x 20cm (horizontally & vertically) up to depth of box, made out of 20mm thick shisham plank with hinges, hasp and staples, including PVC transparent Jars. Strata chart of ground data showing different type of strata, size of strata chart (80 cm x 30 cm) (in duplicate) complete, all as specified and directed by Engineer-in-Charge.

Supply installation, lowering, testing and commissioning of submersible pumping set with outer dia of pump not exceeding 100mm discharge capacity 60-270 LPM, head range 80-184 meter complete, all as specified and directed by Engineer-in-Charge.

Supply and laying/fixing cable flat submersible with copper conductor 3 core 1100 volts grade 4 Sqmm cross sectional area Stranded confirming to relevant IS complete, all as specified and directed by Engineer-in-Charge.

Supply, laying and testing cable XLPE Insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 25 sq mm 4.0 core complete, all as specified and directed by Engineer-in-Charge.

Earthing complete with galvanised steel earth plate electrode 600mm x 600mm x 6mm buried directly in the ground vertically to depth not less than 2.25 m below the ground level with the top edge of earth plate, depth not less than 1.5 m below the ground level connected to GI earth strip of 25mm x 4 mm size by means of bolts, nuts and washers protected by GI tubing light grade 40 mm dia upto test point 20 mm dia watering pipe with funnel & wire mesh, PCC pit in PCC 1:2:4 type B-1 (using 20 mm graded stone aggregates) chamber 40 mm thick RCC cover slab type B-1 (1:2:4) (using 20 mm graded crushed stone aggregates) and shown in electrical plate No.3 of SSR Part-I including earth work in any type of soil, removal of surplus soil and providing charcol dust & salt layers all around the earth plate upto 15 cm complete, all as specified and directed by Engineer-in-Charge. Note:- Upto 7.5 m length of pipe of 40 mm dia and GI strip shall be deemed to be included in unit rate quoted by tenderer, GI pipe and GI strip beyond 7.5 m will be measured and paid separately under respective item.

Supply, Installation, commissioning and testing LT panel outdoor cubical floor mounted type made out of 3.15mm thick CRCA sheet, mounted on MS angle iron of 50mm x50mm x6mm having length 80cm long (30cm to be grouted in PCC) duly powder coated complete with bus bar 200 Amps rating made of Copper strip duly drillled holes for connections and mounted on epoxy based post insulators for 3 phase 4 wire 415 volts 50Hz power supply system including necessary earth work and suitable for housing the following :- INCOMING (i) MCCB 40 Amps 4 Pole 50 Hz 415V with rupturing capacity 25 KA.- 01 No. OUTGOING (ii) MCCB 32 Amps 3 Pole 50 Hz 415V with rupturing capacity 16 KA.- 01 No.

M&L for Drilling and Flushing of existing borewells of size 300mm dia, depth upto 200 m with drilling suitable DTH machine including surging and flushing the bore at a pressure of 7 Kg/sqcm complete with compressed air and flushing the sand, mud etc from the borewell with compressure complete, all as specified and directed by Engineer-in-Charge. Note:-Disconnecting and lifting out of existing submersible pumpset from the borewell upto 10 HP capacity alongwith their column pipe and submersible cable from borewell from any depth and lowering after flushing and drilling in existing borewell included in the quoted rate.

M&L for DI special, such as tees, bends of any sizes and radius, tapers, collars, tail piece caps and plug upto 150 mm bore complete, all as specified and directed by Engineer-in-Charge.

M&L for run lead joint including preparations of ends, provision of hemp/yarn gasket and pig lead filling and proper caulking for CI/DI pipe of 100mm bore complete, all as specified and directed by Engineer-in-Charge.

Taking out cast iron pipes (including all fittings), with spigot and socket ends including burning out lead joints and removing lead of size 100 mm dia complete, all as specified and directed by Engineer-in-Charge.

Refixing of old serviceable CI pipes obtained from item No. 1.29 after cleaning throughly and removal of all blockage by using splitted bamboo/steel rod effectively complete, all as specified and directed by Engineer-in-Charge.

Supply, laying, jointing and testing DI pipe K-7 of size 100 mm internal dia with spigot and socket end including tyton joints complete, all as specified and directed by Engineer-in-Charge.

M & L for cast iron sluice valve of size 100 mm dia class PN 1.6 confirming to IS-14846 flanged and drilled hole having stainless steel spindle with cast iron wheel at top complete with nuts, bolts, washers and rubber gaskets including taking out old unserviceable sluice valve complete, all as specified and directed by Engineer-in-Charge.

S&F CI non return valve of size 100 mm dia, horizontal flanged end confirming to IS-5312 including nuts, bolts, washers and rubber gaskets and taking out old unserviceable Non return valve complete, all as specified and directed by Engineer-in-Charge.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m deep and getting out in any type of soil including boulders complete, all as specified and directed by Engineer-in-Charge.

Returning filling in soils including spreading, levelling, watering and well ramming in layers not exc. 25 cm thick complete, all as specified and directed by Engineer-in-Charge.

Removing surplus soil to a distance n.exc 50 m and depositing where directed at a level n.exc 1.5 m above the starting point. complete, all as specified and directed by Engineer-in-Charge.

M&L for sand cushioning to cable using fine sand (Jamuna dry and clean sand) in two layers, first layer of 80mm thick before laying of cable and second layer of 150mm thick (Punned down to 100 mm thick) after laying of cable complete, all as specified and directed by Engineer-in-Charge. Note : 180 mm thickness only will be considered for the purpose of payment.

Supply and laying of well burnt class 'B' bricks as mechanical protection to under ground cables laying with length of the bricks equal to the width of the trench complete, all as specified and directed by Engineer-in-Charge.

Supply and laying of GI Pipe, light grade of size 40 mm dia for cable protection complete, all as specified and directed by Engineer-in-Charge.

V.K. Enterprises