Construction of Govt. ITI Building at Pandoga Distt Una (HP). (SH- Drilling, lowering of assembly and development of 1No. Tube Well).

Amount

Transportation of suitable truck mounted DTH & ODEX/Percussion/Calyx/RC/Rotary drilling rig along with necessary accessories etc. Complete including errection and levelling at site, through all kinds of roads, approaches field etc in all respects as per the direction of Engineer-in- charge.

Drilling of bore of 200 to 300 mm dia as per IS 2800:1979 using DTH&ODEX/Percussion/Calyx/RC Rotary method required for drilling in collapsible strata conglomerate, boulders, pebbles, gravels, silt, clay etc including cost of attachments, extractable casing, consumable stores, bits, water, POL etc in annular space etc complete in all respects as per direction of the Engineer-in-Charge.

Collection and preservation of soil samples in polythene bags complete in all respect as per Engineer -in- Charge .

Development of bore well and yield testing with air compressor through V-notch and disifection etc. as per IS 2800-1979 complete in all respect as per direction of the Engineer-in-Charge.

Supply and lowering of IS marked 175 nn dia 6.4mm thick MSERW casing pipe as per IS 4270-2001 and requirement of rotary attachment from approved manufacture complete in al respect as per direction of Engineer-in-Charge.

Development of bore well with 1000-CFM air-compressor through V notch as per IS 2800-1979 including transportation of equipment etc to the site of work complete in all respect for the bore drilled by RC rig as per direction of Engineer-in-Charge.

Development/establishment of discharge of bore well and yield testing with subribale pump through V notch as per IS 2800-1979 including transportation of equipment etc to the site of work complete in all respect for the bore drilled by RC rig as per direction of Engineer-in-Charge.

Pdg sloting arrangement as per IS 8110/1994-997 slots size 1.5 7 x 75 mm and and lowering of 200/17Srnm duia slotted pipe as per IS as per 4270-2001 with upto date ammendments welded and joints into bore hole in vertical position including cost of all cuting, threading and welding of pipe etc. within all leads and lifts complete in all respect as per direction of the Engineer-in-Charge.

Supplying, lowering and fixing in position IS marked mild steel bail plug of 200mm/300mm diameters with "U" hooks as per IS 2800-1991 with up to date amendements, I any, within all leads nad lifts, complete in all respects as per directions of the Engineer-in-Charge.

Supplying and packing of gravel , consisting of hard quartz or other suitable material with 175mm/125mm an average specific gravity of not less than 2.5 , not containing more than 2 % by weight of thin flat of elangated pieces, shall be of sub rounded to rounded grains with minimum angular features of size 2-3.35 mm , shall be free from impurites such as shafe ,shale ,mica ,felispar ,clay ,sand dirt loam ,baematte and organic material as per IS-4097 - 1967 with up-to-date amendments ,around intake of tubewell with minimum thickness of shroud around screen generally 100 mm to the entire depth of the bore as per 2800 (part-1 ) 1991 with up-to-date amendments , if any ,with in all leads and lifts , complete in all respects as per direction of Engineer - in -charge .

Shiva Tubewell Works

Vijay Sharma Contractor

Akarshan Jaswal

B. S. Enterprises.