AR and MOWSS to Rajeev Gandhi Govt Engg. College Nagrota Bagwan

Transportation of suitable truck / tractor mounted where only road available DTH & ODEX / Percussion Calyx / RC Drilling with portable rigs alongwith necessary accessories etc. to the site of work and erection of portable rig including leveling etc.complete in all respects as per the direction and to the entire satisfaction of Engineer-in-Charge.

Drilling of bore of 220 mm dia as per sepcification laid down in BIS: 2800-1991( Part-I) with up-to-date ammendments, if any with DTH/ODEX method Starting with 500mm dia reduced to 400mm dia ODEX attachment, if any in all kind of soils, boulders, rock, collapsible strata, sturated soils, artesian conditions including the cost of all consumable, stores, water, fuel, lubricants and other accessories etc. complete in all respects as per the direction and to be entire satisfaction of Engineer-in-Charge.

Supply / Lowering of IS marked Electrict resistance Welded M.S. pipe 200 mm dia nominal size housing 6.40 mm thick confirming to BIS: 4270-2001 with up- to-date ammendments if any, of 3 to 6 mtrs. in length welded without anyc ircumferential joints into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embeded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts, complete in all respects as per the direction and to be entire satisfaction of Engineer-in-Charge.

Supply / Lowering of IS marked Electrict resistance Welded M.S. sloted pipe 200 mm dia nominal size housing 6.4 mm thick having outsider dia meter 193.70mm screwed and sockted confirming to BIS: 4270-2001 with up- to-date ammendments if any, of 4 to 7 mtrs. in length pipe should have 940 slots per meter as per IS 8110 : 1985 of 75x1.57mm slot size welded without any circumferential joints into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embeded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts, complete in all respects as per the direction and to be entire satisfaction of Engineer-in-Charge.

Providing and fixing suitable casing shoe and bit tube as per requirement of ODEX attachment complete in all respects as per the direction and to be entire satisfaction of Engineer-in-Charge.

Collection and preservation of soil samples in polythene bags complete in all respects as per the direction and to be entire satisfaction of Engineer-in-Charge.

Development of bore well by continous over pumping method with VT Pump/ Submersible pumps of suitable capacity not less than double the discharge established by the compressor method/design discharge, until the well is stand free as per clause 4.2 of BIS 11189-1985 uptodate ammendment, if any, complete in all respects as per direction of the Engineer-in-Charge within all leads and fifts. The draw down in all and discharge to be established by running the VT/submersible pump continouslly for 8 hours in the presence of officer not less than double the discharge established complete in all respects as per the direction and to be entire satisfaction of Engineer-in-Charge.

Providing and fixing of well cap on top of Tube well for protection 200mm dia complete in all respect as per the direction and to the entire satisfication of Engineer-in-Charge within all leads and lifts.