PROVIDING AND INSTALLING TUBEWELL 200MM ID 160 MTR DEPTH WITH PERCUSSION RIG AT VILL CHHATWAL, DISTT PATHANKOT UNDER WORLD BANK 1A AND JJM

Amount

Drilling of telescopic bore 25" (625 mm) 22" (550 mm) 18" (450mm) 16" (400 mm) 14" (350mm) diameter with percussion rig in all kinds of soil including the cost of consumable stores, fuel oil and transportation of rig to the site of the proposed bore (0 to 160mtr BGL) (CSR item No. 28.134)

1. Erection and dismantling of boring plant including all arrangement for the transportation of the boring equipment to site of work from the store of contractor at site and back are to be made by the contractor at his own cost. All rates should be quoted for supplying the material at site of work. Pits for collection of water and water for drilling tubewell to be arranged by the firm/contractor at site at his own cost.

2. In case the bore is converted into a tubewell payment of bore shall be made up to the bail plug plus margin (7% of main bore drilling or as actual as per field requirement whichever is less) required for sustaining the main bore paid at the rate of beyond margin shall be paid at the rate of test bore drilling.

Supplying and lowering of MS Pipe as per IS:4270-2001 including MS sockets having dimensions as per IS Code duly welded with MS electrode to have extra strength to lower the pipe into tubewell bore. (CSR item No. 28.74 (a)

200mm nominal diameter (weight 33.6 Kg per meter) 6.40mm thickness

Supplying, fixing, lowering of Stainless Steel Cage type wire wound screen as per IS:8110-2000 or latest with ISI Marked dully welded with suitable grade S.S welding electrode to lower the strainer into Tubewell bore. (CSR item No. 28.75 A)

200mm internal diameter (slot size 0.75mm) 6.30 mm thickness (As per A & C Slip)

Supplying, fixing lowering of stainless steel socket as per IS: 8110-2000 or latest ISI Marked dully welded with suitable grade S.S welding electrode to lower the strainer into Tubewell Bore complete in all respects. (CSR item No. 28.75 AA)

Supplying and fixing of bail plug of MS pipe complete with inverted u-hock attached to the bottom plug complete in all respects (200mm) i/d weight 33.6 kg p/m) 6.40 mm Thick. (CSR item No. 28.79 A C)

Supplying and Fixing mild steel centering guides made out of 32mm x 6mm thick M.S. bar complete in all respects. (CSR item No. 28.89)

Supplying & Fixing of well cap having thread to fix on housing pipe complete in all respect. 200mm internal diameter (CSR item No. 28.80 C)

Supplying & fixing of M.S Clamp of size 150mm x 12mm made out of MS Flat 1.52m long, suitable to fit Housing pipe including the cost Nut & Bolts of Suitable size complete in all respect. (CSR item No. 28.77)

Supplying, lowering & fixing of M.S Special Socket to connect S.S. Strainer to M.S Pipe duly welded with suitable grade welding electrode complete in all respect. 200mm internal diameter (CSR item No. 28.76 C)

Supplying at site Wooden Box of suitable size with Lid & locking arrangement for preserving strata sample collected from the bore. (CSR item No. 28.78)

Supplying at quarry site of gravel of 1/16" to 1/8" sizes including pouring and packing in the annular space between the pipes assembly and the bore. The gravel should be free from, dust, dirt, or the vegetable manner as per IS 4097/1967 with latest amendments (to be paid as per actual length of pipe) (CSR item No. 28.88)

Development and stabilizing of the tube well with air compressor of required capacity as directed by the engineer-in-charge including cost of tools, appliances & consumable to the satisfaction of Engineer-in-charge. (CSR item No. 28.81)

Capacity of Air compressor 300 cfm at 250 PSI

Development and stabilizing of the tubewell with submersible pump of required capacity as directed by the engineer-in-charge including cost of tools, appliances & consumable to the satisfaction of Engineer-in-charge (CSR item No. 28.82)

Testing of water sample for heavy metal testing from approved laboratory (Toxic material such as Arsenic, lead, mercury, pesticide etc) (CSR item No. 28.84)

Provision for Sanitary Clay seal (as per BIS Code IS 2800:2019) including sterilization of tubewell