REPAIR REPLACEMENT OF WATER LEVEL INDICATOR DEVELOPMENT OF BOREWELLS AND VALVE PITS INCLUDING CONNECTED ITEMS IN THE AOR OF AGE U WS NO I UNDER GE U WATER SUPPLY DELHI CANTT 10

Disconnecting water pipe line, electric conneciton and taking out submersible pump set of any capacity alongwith column pipe with help of chain pully block using tripad etc any depth as required at site and lowering the submersible pump set after necessary development of bore well etc all as specified and directed at site by the Engr-in- charge

Drilling not less than 300 mm bore hole by DTH method to any depth below the ground level in any kind of rock/soil upto 100 mtr deep including disposal of surplus soil to a distance not exc 50 mtr away all as specified and directed by Engineer-in-Charge. Note : (i) In case of incountering rock prior to 30 mtr depth from ground level the decission of the Garrison Engineer for reboring shall be final and binding. Specific order in writing shall be issued by Garrison Engineer for reboring and the quantities shall vary accordingly. (ii) cost of transportation of DTH plant is included in the unit rate.

Supplying, lowering & fixing into bore 200mm dia MS casing pipe as IS-4270-2001, minimum 6.0 mm thick ERW having duly welded both sides socketed ends complete all as specified and directed by Engineer-in-Charge

Supplying, lowering & fixing into bore 200mm dia MS casing pipe as IS-4270-2001, minimum 6.0 mm thick (Slotted) ERW having duly welded both sides socketed ends complete all as specified and directed by Engineer-in-Charge

M&L for development of bore well of any capacity and size at the pressure 10 kg/sqcm to 15 kg/sqcm by diesel engine driven air compressor of capacity 620 cfm includiing air pipe and connected items to improve the yield of tube well complete all as specified and directed by engineer in charge.

M&L for development of bore well of any capacity and size at the pressure 22 kg/sqcm to 25 kg/sqcm by DTH Machine of capacity 1200 CFM including air pipe and connected items to improve the yield of tubewell as specified and directed by Engineer in charge. Note : The rate deemed to include the cost of Transportation of machine and minimum 1 Hrs of running.

Supplying & fixing well cap suitable for 200 mm bore well dia consisting of two parts complete with welding and machinery work having provison of cut out for passing of column pipe and fabricated from MS sheet 3.15 mm thick complete all as specified & directed by Engr-in-Charge.

Supply & fixing housing clamp for 200 mm dia bore pipe made out of flat MS 150x12 mm thick (length 80 mm) with 4 Nos 20 mm dia of suitable size of bolt, nuts, washers etc including drilling holes of suitable sizes and painting 2 coats of synthetic enamel paints over a coat of red oxide primer complete all as specified and directed by Engineer-in-Charge

Supply & fixing housing clamp for 50 mm dia bore pipe made out of flat MS 100x10 mm thick (length 60 mm) with 4 Nos 20 mm dia of suitable size of bolt, nuts, washers etc including drilling holes of suitable sizes and painting 2 coats of synthetic enamel paints over a coat of red oxide primer complete all as specified and directed by Engineer-in-Charge

Supplying and packing pea gravel of size 3.00 mm to 6.00 mm around casing pipe complete all as specified and directed by Engr-in-Charge.