Providing and installation ...

Providing and fixing of Odex casing shoe of Proper Size and ISI make complete in all respect.

Providing and fixing of RCC ring and cover of suitable dia. To avoid intrusion of surface runoff of rainfall inside the borehole, including all fixtures, complete in all respects.

Drilling of 609.60 mm dia bore by Direct rotary drilling rig. according to ISI specification No.2800-1991 (Part-1) as amended upto date and modified to extent of the specification attached with this schedule of items of work in all kinds of soils and boulders upto 125mm dia except rocky strata including the cost of all consumable stores, fuel oils, soil, stabilizing material and transportation of rig and other accessories to the site of proposed bore and back, complete to the satisfaction of the Engineer-in-Charge

Labour for making filter on 219.10 mm dia ERW M.S. Pipe (ISI marked) with slot length 62.50mm and slot width 0.5mm to 0.75mm around the pipe by gas cutter or any suitable mechanism including cost of all consumable items complete in all respect to the satisfaction of Engineer-in-charge.

Providing and fixing of cast iron (C.I) D plate of size 300mm dia x 10mm thikness having weight 7 kg to cover the top borehole fastened with nut and bolts and clamp placed on its top for holding the pump set and GI pipes lowered in the tubewell complete in all respect to the satisfaction of Engineer-in-charge.

Providing and fixing of G.I clamp 50mm wide and 10mm thick suitable for holding to 50mm G.I pipe class B and pumping machinery complete in all respect to the satisfaction of Engineer-in-charge.

Providing and fixing of 2` i/d nipple made out G.I pipe class B and welded with flange having holes for fasting with pipe and threaded at other end with 8 threads in one inch(25mm) complete in all respect to the satisfaction of Engineer-in-charge.

Inspection of tubewell with Geo Scanning borehole camera with display and data recorder to find out the fault and submission of suggestions regarding rectification of same to obtain the sand free water at site Including Transportation, Lodging, and Boarding. Detailed Analysis with Videography and Submission of Report, Video and also verifying the depth/ position of assembly complete in all respect to the satisfaction of Engineer-in-charge.

Drilling of 300 mm dia bore by DTH for drilling accoring to ISI specification No. 2800-1991 (Part-1) as amended upto date and modified to extent of the specification attached with this schedule of items of work in all kinds of soils 190mm dia bore by DTH in hard rocky starta including the cost of all consumable store, fuel, oil, soil stabilizing material and transportation of rig and other accessories to the site of proposed bore and back complete in the satisfaction of the Engineer-in-charge.

Providing and Fixing / lowering 7” (180 mm) Dia M. S Pipe of thickness 6.4mm of 6 meter long marked IS 4270 as required for covering loose formation of soil during drilling process including enlarging the existing drilling size at any depth to cover the loose formation of bore complete in all respect