Providing drilling of permanent boreholes

Amount

Drilling of Bore well: Drilling of bore well up to 25 meter depth and above in all types of rocks by DTH system and over burden to accommodate casing pipe of following size in all the type of casing pipes , but excluding cost of casing pipes as per IS 2800 (Part I & II) 1979 throughout bore as per normal dia of casing pipe including hire & running charges of all equipments, tools, plants & machineries required for the job, all complete as per direction of Engineer-in-charge. Note:- Bore hole shall be suitable to insert cashing pipe of 150 mm nominal size dia.

Supply and installation of pipe: Supplying, assembling, lowering and fixing in vertical position in bore well unplasticized PVC medium well screen (RMS) pipes with ribs (slotted), conforming to IS: 12818, including hire & labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer-in-charge. 150 mm nominal size dia.

Supply and installation of MS pipe: Providing & Fixing of ERW M.S. black casing pipe 250mm dia Heavyduty ISI marked (IS:4270/1992 ) of grade FE 410 at site of work.

Supply and Fixing MS Sheet Cover: Providing & Fixing of cover of M.S.Sheet (1.6mm thick) with nuts and bolts, hinges etc., including vent pipe of 25 NB one end welded with cover as per drawing and other end fixed with 40 SS mess screen complete for casing size 250mm dia.

Concrete Structure: Providing and laying cement concrete of 1:2:4 (1 Cement : 2 Coarse sand : 4 graded stone aggregate 20 mm nominal size) in retaining walls, return walls, walls(any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed block, anchor block, window sills, fillets etc. at all level including transporting of concrete to site, laying including cost of finishing, curing etc. all complete excluding the cost of centering and shuttering as per specifications and direction of Engineer-in-charge.

Structural steel: Structural steel work riveted, bolted or welded in built up sections, trusses and frame work M.S. door & fix ventilators, anchors etc made out M.S. angle, channels, flats, rods, bars, weld mesh, M.S. pipe etc including supplying, cutting, hoisting, fixing in position and applying two coat of approved quality synthetic enamel paint over a priming coat of approved steel primer all complete as per standard design, including the cost of all material and labour complete- as per drawings , specifications & direction of engineer in charge.