Directorate General Of Lighthouses And Lightships Tender

PART - A (CIVIL WORKS): Identification and locating of ground water points using modern scientific ground water identification techniques, Drilling of 140 mm dia bore holes to a depth of 37 to 48 Meter in any type of soil and getting out, supplying, transporting and lowering in raw bore wells pvc casing, strainer pipe of size 140mm outer dia,(: Ashirvad/Finolex/Supreme/True bore) lowering with vertical alignment including collecting samples from different data, preparing and submitting strata chart / bore log. Supplying and filling annular grading gravel fine/ medium/ coarse in required grading & size, in space between casing pipe and raw bore with requisite quantity of free size pebbles varying in size from 6mm to 10mm, developing and cleaning of bore wells location with air compressor of required capacity, flushing out until clear water comes out from the raw bore well, including supplying and fixing of 140 mm end cap, including all equipments, transport, materials, labours, compressors, using oil Engine / Galaxy type borewell drilling method and equipment etc, complete all as specified and directed. The development of borewell in accordance with IS 2800 part 1 and IS 11189 to establish maximum rate of usable water yield without sand content (Beyond permission limit).

Stage-1 (0 - 12M )

Stage-2 (12 - 24M )