Water Quality Monitoring and Surveillance of Community managed water supply scheme 2024-25-Mitigation Plan proposal for Ambuttanpetty wss In Pothukallu GP In Malappuram District

Water quality Monitoring and surveillance of Community managed water supply scheme 2024-25-Mitigation proposal for Ambuttanpetty wss In Pothukallu GP In Malappuram District

1250 mm Diameter Filter : Design, Fabricating and supplying cylindrical shape,stainless steel barrel of diameter 1250 mm and height 1250mm made of 304 grade stainless steel. Bottom & top of the tank in spherical shape , top of the barrel is to be with detachable water tight flanged joint. Suitable supporting stand in stainless steel to be provided . At the top and bottom of the barrel , inlet and outlet are fixed with 75mm stainless steel pipe with flanged ends . Two number of 20 mm stainless steel pipe nipple are to be fixed at the top and bottom of the tanks for fixing pressure gauge, and other appurtenances. Four numbers of stainless steel perforated plates ( with 6mm at bottom , 4 mm , 2mm and 1mm perforation/longitudinal slots with required spacing) of 2mm thick ss plate having same inside diameter, (with required horizontal stiffeners) barrel. The barrel are to be provided with suitable locking and holdings arrangements for the horizontal plates. To hold the perforated plates horizontally inside the barrel four number of 10mm vertical stainless steel rods are placed inside suitably welded at the bottom of the vessel and 12 mm dia ss pipe having a length of 10cm/5cm bits inserted in the entire length of all the four rods . Stainless steel pipe 12 mm dia with 4mm perforations @ 5cm c/c on both sides shall be placed below the bottom most plate to support the plate and for blowing air from outside as per the drawings attached including cost of all fitting and fixing charges etc complete. The unit is to be tested for water pressure of 3kg/cm2. The unit shall be fitted with required length of 75mm stainless steel pipe 5 nos of 75mm stainless flanged ss ball valves,One non return valve as per drawing etc complete.

Supply and fitting of two numbers 100 mm dia pressure gauges, air release valve,and 20mm valves, sampling taps and other fittings etc complete

Supplying and Conveying of Course sand

Supplying and Conveying Gravel 2 to 4mm size

Supplying and Conveying of Silex 12mm&6mm

Supplying and Conveying of Activated carbon

Supplying and Conveying of Fine sand

Conveying and fixing the vessel at the reservoir site including installation charges

Charges for washing cleaning and filling the filter media in the vessel as per the direction of officers concerned

Anchoring the filter unit at site in cement concrete, including earth work excavation, cost of all materials, labour charges and all allied items of works etc complete

Loading, unloading, and transportation charges

Platform - Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer-in-charge. All kinds of soil

Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20 mm nominal size) up to plinth level with:Cement mortar 1:6 (1 cement : 6 coarse sand)

Reinforced cement concrete work in walls (any thickness), including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. up tot floor five level excluding cost of centering, shuttering, finishing and reinforcement :1:1.5:3( 1 cement : 1.5 coarse sand : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Steel reinforcement for R.C.C work including straightening, cutting, bending, placing in position and binding all complete upto plinth levelThermo - Mechanically Treated bars of grade Fe-500D or more

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:2:4 (cement : 2 coarse sand (zone-III)derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources)

Item Shifted to Sub head 14 as item 14.73 Item Shifted to head 14 as item 14.74 Steel work welded in built up sections/framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer using structural steel etc. as required.In gratings, frames, guard bar, ladder, railings, brackets, gates and similar works

Supply of PVC Pipe, 6kg/cm2, 110mm Dia.

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. Electric resistance or induction butt welded tubes

Excavating trenches of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5 m, including getting out the excavated soil. and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m: All kinds of soilPipes, cables etc. exceeding 80 mm dia but not exceeding 300 mm dia

Laying uPVC pipes of class 2 to class 6 and specials, lowering to the trenches already made, placing in position aligning the pipeline to the lines and levels and jointing the pipes and specials with solvent cement and testing the pipeline with water to the required test pressure (excluding cost of pipes and specials): 110 mm nominal outside diameter pipes.

Providing and fixing precoated galvanised steel sheet roofing accessories 0.50 mm (+0.05 %) total coated thickness, Zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screwscomplete :Crimp curve

Testing water sample from the source of scheme at any Government laboratory and submitting the report- both physical and bacteriological parameters.

Percentage of applicable GST