MLA ADF-CWSS to Oachira and adjoining Panchayath-General Civil Work- Construction of New tube well at Ward no.13 in Clappana Panchayath

OD237380/2024-2025:Boring /drilling bore well of required dia for casing / strainer pipe, by suitable method prescribed in IS: 2800 ( part I), including collecting samples from different strata, preparing and submitting strata chart/ bore, including hire & running charges of all equipments, tools, plants & machineries required for the job, all complete as per direction of Engineer- in- charge, beyond 150 metre & upto 200 metre depth below ground level.<br>Rocky strata including Boulders<br>400 mm dia

OD237371/2024-2025:Supplying, assembling, lowering and fixing in vertical position in bore well ERW ( Electric Resistance Welded ) FE 410 mild steel screwed and socketed / plain ended casing pipes or required dia , conforming to IS 4270, of reputed & approved make, including painted with outside surface with two coats of anticorrosive paint of approved brand and manufacture, including required hire & labour charges, fittings & accessories, all complete, forall depths, as per direction of Engineer-in-Charge.450 mm nominal size dia having minimum wall thickness 8 mm

23.15.3:Providing and fixing Bail plug / Bottom plug of required dia to the bottom of pipe assembly of tubewell as per IS : 2800 (part I).200 mm dia

23.3.3:Supplying, assembling, lowering and fixing in vertical position in bore well, unplasticized PVC medium well casing (CM) pipe of required dia, conforming to IS : 12818, including required hire and labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer- in- Charge.200 mm nominal size dia

23.4.3:Supplying, assembling, lowering and fixing in vertical position in bore well unplasticized PVC medium well screen (RMS) pipes with ribs, conforming to IS: 12818, including hire & labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer - in-charge200 mm nominal size dia

23.13.3:Providing and fixing suitable size threaded mild steel cap or spot welded plate to the top of bore well housing/ casing pipe, removable as per requirement, all complete for borewell of:200 mm dia

OD237360/2024-2025:Supplying, Conveying and stacking at site for taking measurement best quality round pebbles, which should pass through 10 mm sieve and should retain in 5 mm sieve as per relevant IS Specification and packing round the strainer pipe using pebble for graded size as directed by the department officers and back washing including all labour charges cost and conveyance of water etc,complete.

OD237377/2024-2025:Clay packing around the well for perfect clay sealing using saddle clay including conveyance cost of all materials and labour charges etc complete

23.12:Development of tube well in accordance with IS: 2800 (Part I) and IS : 11189, to establish maximum rate of usable water yield without sand content (beyond permissible limit), with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by "V" notch method or any other approved method, measuring static level & draw down etc.by step draw down method, collecting water samples & getting tested in approved laboratory, i/c disinfection of tube well, all complete, including hire & labour charges of air compressor, tools & accessories etc., all as per requirement and direction of Engineer - in-charge.