Construction of 125 mm machine drilled hand pump at SIDCO Ompora Colony Nursery District Budgam

Amount

Drilling of 125mm 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 soil, boulders, rocks, collapsable strata, staurated 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 laboures and other unforseen 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 throughly developed in all respects as per the directions of site engineer.

P/F of MS 125mm dia pipe and subsequent lowering of casing assembly and its welding after every 10 feet, up to the drilled/desired depth. The casing is to be slotted as per the site requirement and as directed by site engineer. The specifiaction of the tube well shall be as under: as per IS 4270: 2001

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 32mm dia GI including sockets.

Providing and fitting of connecting rods G.I for INDIA Mark II 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 load observed while pumping. The jon 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 specifiaction is not available, the surface area it to be adjusted accordingly.

M/S AH TUBE WELLS