PROVN OF BOREWELL AT P-5 BUNGLOW IN ZONE III AT JAIPUR MIL STN

Mobilisation of accessories /tools/ plants /equipment as per IS 2800 (Part 1) 1994 for construction of borewell of 450-500 mm dia bore hole using Rotary/Reverse rotary Drilling Method (Direct Circulation Method) with all minor accessories at site complete all as specified and directed. Note: The quoted rate shall be inclusive of shifting the accessories/ tools/ plants/ equipment from one site to other for subsequent boring.

M & L for trial bore of 200 mm bore upto 200 mtr depth below ground level in any type of strata including hard stone/ boulder with DTH system complete all as specified and directed. Note : - The quoted rate shall deemed to be inclusive of following : (i) If the trial bore hole found fit then digging upto required depth below GL shall be continue. (ii) If trial bore hole not found fit, the same filled up properly with excavated material and another trial bore hole shall be digged at the place as directed by Geological expert through electric loggist test without any extra cost to the state. (iii) Contractor shall submit strata details in both cases to the Engineer-in-charge.

Widening of above trial bore hole of 450-500 mm dia by Rotary/ Reverse rotary Drilling Method (Direct Circulation Method) as described in IS: 2800 (Part I): 1991 in any kind of soil strata including hard stone/boulder upto 200 metre depth below ground level, including compound/ powder like valmite, bentonite solution, local silty clay, hard stone etc. to be required as per the site condition including collecting samples from different strata, preparing and submitting strata chart/ bore log all complete all as specified and directed.

Resistivity variation studies in bore hole drilled by electric logging of pilot bores by expert of Geology division to know the potential and temperature probes of drinking water by approved agency duly collaborated with strata chart/bore log, location of water layer, location of strainer pipes, submitting of Report including its interpretation by a qualified Hydrologist/ground water expert complete all as specified and as directed. Note : Strata chart/ bore log chart at A3 paper and laminated the paper should be submitted to Engineer-in-charge in triplate otherwise payment will not proceed.

M & L for strata sample box of hard wood (Sal/Basum) of size 40 cm x30 cm x 20 cm for collection of different strata sand particle complete all as specified and directed.

Material and labour for conducting test on Tube well for yield after developing including draw down test, vertically test, aquifers performance test including arrangement for all T&P required for testing complete all as specified and directed. Note : Yield test report should be submitted to Engineer-in-charge in triplate otherwise payment will not proceed.

Supply, assembling, lowering and fixing in position 200 mm nominal dia (8 inch) ERW MS black pipe plain assembly MS casing pipe wall thickness of 8 mm including welding of pipe at site including supply of all labour, equipments and materials all around welded with 3 Nos stiffeners of flat iron 40 x 6 mm, 628 mm complete all as specified and directed.

Supply, assembling, lowering and fixing in position 200 mm nominal dia (8 inch) ERW MS black pipe 200 mm bore, 8mm thick slotted pipe laid down and with all necessary fittings including supplying all labour, equipments and materials all around welded with 3 Nos stiffeners of flat iron 40 x 6 mm, 628 mm long complete as per IS and specified and directed. Note:- Location and length of the strainer pipe shall be as per electro logging result.

S&F mild steel bail plug assembly suitable for 200 mm bore casing pipe internal threaded with strong iron hook, screwed and welded to casing pipe as per IS 2800 complete all as specified and directed.

S & F steel housing clamp of 200 mm long 100 mm wide made out of 6 mm thick GI plate made of shape for 200 mm bore casing pipe including necessary bolts & nuts of required size complete all as specified and as directed.