Construction of Borewell at Mulbagh NLO Ab. Ahad Lone at Wussan-A, Pattan in District Baramulla

Drilling of 125 mm diameter tube well by air rotary drilling rig unit suitable for lowering of MS casing of 125mm diameter in suitably drilled bore hole as per specifications laid down in IS 2800 (Part-I) with up-to-date amendments. The job is to be done in all kinds of soils, boulder, rocks, collapsible strata, saturated soils, artisan conditions by ODEX/DTH attachments and exploration of ground water by tapping sufficient aquifer zones. The job includes the cost shifting of drilling accessories, tools, bits, casing shoe, consumables like fuel, lubricants, skilled and unskilled labours and other unforeseen items. Development of tube well with backwash method with air compressor of minimum capacity 1000 CFM (300 PSI air delivery system) with suitable arrangements till well is thoroughly developed in all respects as per the directions of site engineer.

Supply, Providing, Fitting, assembling in vertical position in above drilled bore of Mild Steel plain and beveled ended 125mm dia. (Class B) as per IS 4270 Casing pipes and subsequent lowering of casing assembly and its welding after every 10 feet, up to the drilled/desired depth. The whole casing pipe is inclusive of slotted pipe/flushed, which is to be used as per the site requirement and as directed by site engineer. The pipe shall be lowered up to the desired level BGL. The average length of each pipe shall not exceed 3.00 Mts. The welding electrodes used for welding the pipe shall confirm to relevant IS codes. The specifications of the tube well shall be as per IS 2800 part I&II.

Supply, Installation, Testing and commissioning of INDIA Mark II hand pump assembly comprising of cylinder, head, handle assembly, front cover, handle, axle, washers, nuts/bolts.

Providing / fitting of risers 32 mm dia GI Risers out of class B pipes of aproved SI make including properly threaded after 10 feet length each No. with heavy duty sockets for joint fitting in the tube well.

Providing and Fitting of 10 feet long 12mm dia GI Connecting rods suitable for INDIA Mark 11 Hand Pump.

Providing/Laying of Plain Cement Concrete block of size 4ftx4ftx1ft in 1:3:6 mix to give adequate strength to act as a sanitary block for the well and to grout the hand pump assembly in order to make it robust to resist shock load observed while pumping. The job includes Providing/laying of PCC edges of 4" x4" in 1:3:6 mix and P/L of cement plaster in 1:4 mix to the above block to give aesthetically good appearance. Cost on account of stuttering, strutting, centering, curing etc. is included in the scope of work.In case the suitable space for the above specification is not available, the surface area is to be adjusted accordingly.