Digging of Borewell for New Annexure Building in TNCSC, Head Office, Kilpauk, Chennai-10

Amount

CIVIL WORK

Supplying and fixing Galvalume sheet roofing with 0.47 mm thick of fully corrugated of approved colour and quality by drilling holes (and not by punching) with necessary ‘J’ / ‘U’ bolts and nuts of 8mm dia of suitable length and providing one set of bitumen washers of 25mm dia and 1.60mm thick for each bolt including protruding portion of bolts in roof shall be covered with bitumen compound etc., complete complying with standard specification and as directed, and also using with 90mm, 60mm and 50mm square tube for lean roof and Glading the square tubes and painted with two coats enamel paint over one coat of red oxide primer.

Supplying and fixing Galvalume sheet roofing with 0.47 mm thick of fully corrugated of approved colour and quality by drilling holes (and not by punching) with necessary ‘J’ / ‘U’ bolts and nuts of 8mm dia of suitable length and providing one set of bitumen washers of 25mm dia and 1.60mm thick for each bolt including protruding portion of bolts in roof shall be covered with bitumen compound etc., complete complying with standard specification and as directed, and also using with 90mm, 60mm square tube for lean roof and door the square tubes and painted with two coats enamel paint over one coat of red oxide primer for door.

Drilling of bore wells 150 mm dia including transportation from the place with in the above district in alluvial soil sedimentary strata of ckay and sand stone shale pebbles boulders etc by first taking pilot of 140mm/150mm/200mm dia and the enlarging to required dia by direct or revise rotary mud circulation method using contractor’s rig fuel labour drilling betonies mud and water required for the drilling at the site shown by the departmental officers including construction of mud pit (Water available with in a lead of 1.5Km) Drilling of 140/150/200mm pilot bore etc., complete complying with standard specification and as directed. Upto 60 MM Depth ending below ground level.

Reaming from 200mm dia pilot bore to 350mm dia bore as directed by the departmental officers upto 6M depth ending below Ground level etc., complete complying with standard specifications and as directed. Upto 60 MM Depth ending below ground level.

Labour charges for inserting PVC casing pipes assemble (with slots or without slots) in the drilled hole including jointing the pipes with PVC coupler and with cement paste etc complete and supplying and packing the annular space with pebbles of size and quality is approved by the departmental officers, etc complete complying with standard specification and as directed. 150 MM Dia PVC Pipe.

250 MM Dia PVC Pipe.

Charges for developing the bore well for entire depth with suitable air compressor of 600RPM capacity (minimum 8 hrs) including the transportation labour and fuel charges for compressor and directed by the departmental officers and conducting yield test by "V" notch methods, excluding the cost of bore charges and conveyance charges of handle boring etc., complete complying with standard specifications and as directed.

Supplying and fixing of 2 HP single phase submersible motor with all materials including cost of materials and labour charges, and conveyance charges etc., complete complying with standard specification and as directed.

Labour charges for the erection of 2 HP submersible pumpset in bore well/ open well including fixing and jointing submersible cable with proper clamps upto the starter to required depth and also fixing of riser pipes to the required depth valves erection clamps, pressure gauges upto los the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, three pilot (indicating) lamps capacitor single phasing preventer, water level guard and laying and jointing the cables and twin earthing as per lE rules and testing the pumpset and trail run for 10 days etc., complete complying with standard specification and as directed.

Supplying, and fixing the following size of PVC pipes of approved quality and variety conforming to pressure IS 4985. The rate is inclusive of cost of pipe, all taxes, conveyance charges of materials and all other labour charges for fixing the PVC pipe as directed by the departmental officers etc., complete complying with standard specifications. The PVC pipe should be got approved by the departmental officers before use on work. 250 MM Dia PVC Pipe.

150 MM Dia PVC Pipe.

Provision for water divine charges for Hydro geologist etc., complete complying with standard specification and as directed.

R SAMPATHKUMAR