Construction of Infiltration Well and Source at River Thamirabarani and Pumbing Line and Delivery Line at Suthamalli Panchayat.

Construction of Infiltration Well and Source at River Thamirabarani and Pumbing Line and Delivery Line at Suthamalli Panchayat at Manur Panchayat Union

Earthwork excavation above water level in light or sandy or clayey soils for infiltration wells including levelling the site with an initial lead of 10 metres. (TWAD Schedule of Rates 2025-26 , Page-169)

Sinking of infiltration well of 4.50 m internal dia and 5.4 m outer dia below water level in sandy soil including all incidental charges atc. Complete and as directed by officers 1st depth of 2m

2nd depth of 2m

3rd Depth

Plugging the bottom of well with coarse sand passing through a sieve of 10 meshes to 2.50 cm and retained in a sieve of 20 meshes to 2.50 cm etc. complete and as directed by officers.

Providing steel centering using MS plate of size 90cm x 60cm - 13G to 10G thick welded with 25cm x 3mm MS angles supported with country wood scanting of size 10cm x 6.5cm at 50cm c/c strutting with casuarinas props of 10 cm to 13cm dia etc. complete and as directed by officers. Curved Surface

Plane Surface

Supply, delivery fabrication and placing in position of MS, RTS rods for reinforcement for binding ring, pilasters, oof slab and well curb including cost of binding wire etc. complete and as directed by Officers.

Porus concrete using 20 mm HBG stone in cement and aggregate of 1:4 (one cement and four HBG jelly) for stiening of infiltration well exluding cost of centering but incliding curing etc. complete and as directed by the officers.

Providing and laying in position, Standardised Concrete Mix M-3O Grade in accordance with IS:456-2000, using 20mm and down graded hard broken granite stone jelly for all RCC items of works with minimum cement content of 400 kglms and maximum water cement ratio of 0.45, including admixture (plasticiser / super plasticiser) in recommended proportions as per IS:9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability with about (5.0 cu.m.) 7730 kg. of 20mm machine crushed stone jelly and with about (3.3 cu.m.) 5156 kg. of 10-12mm machine crushed stone jelly and with about (4.79 cu.m') 7670 kg. of Sand, but excluding cost of reinforcement grill and fabricating charges, centering and shuttering and also including laying, vibrating with mechanical vibrators, finishing, curing, etc. and providing fixtures like fan clamps in the RCC floor/ roof slabs wherever necessary without claiming extra, etc., complete complying with standard specification and as directed by the departmental officers. The coarse and fine aggregates to be used should comply with the requirements of IS Standards (No separate payment will be made by the Department for the excess usage of materials) etc complete for 10 cum.

Plastering in CM 1:4 (one cement and four sand) 12mm thick for inner face including curing, finishing etc. complete and as directed by the officers.

Exterior Emulsion painting two coats with best approved quality and colour paint over one coat of Base coat including cost and convyance of all materials to work site and labour charges etc., complete.

Supply and fixing of CI manhole cover of size 0.60 x 0.60 m with locking arrangements including the cost of RI sheet and fixing at the edges etc. complete and as directed by officers. ( heavy type )

Supply and fixing of CI steps to be embedded in the wall of the infiltration well (inside) with vertical dearance of 0.30 m c/c and horizontal clearance of 0.38 mc/c in staggered manner etc. complete and as directed by officers.

Supply and delivery of the following MS Chennal including fixing and painting etc. Complete to house the submersible pumpsets

Supply and fixing of cutting edge using 150 x 150 x 10 mm MS angle including the cost of fabrication welding and placing in position in the curb including cost of materials conveyance etc. complete and as directed by officers.

Providing vantilating arrangement by fixing in position of 100 mm GI pipe with PVC cowl and as directed by officers.

Putting confirmatory borholes of size 3" to 4" dia in river bed in sand using hand bore set including cost of hire charges. Conveyance charges, collecting soil samples etc. complete and as directed by officers.WD-W0920

Provision for diverting water by constructing ring bund around the well (Vide separate sheet) Construction of ring bund using sand bags around the infiltration well for rasing the bund 0.30 m above the water level (at the time of construction of infltration well ) for erection of well curb and diverting the river flow including cost of sand, gunny bags labour charges for filling, striching charges stacking charges etc. complete and as directed by officers.

Filling sand inside the bund for raising the bed level upto the water level for erection of well curb and providing working area for construction of infiltraction well including cost of sand, labour charges for filling etc. complete and as directed by officers. (inside the bund)

Supplay and delivery and fixing of casurana props up to cm dia around the infiltration well

Drilling the casurana props up to 1 m depth in to river bed

Supply of 200mm DI Pipe including all cost and onveyance etc Complete

Laying of 200 mm dia C.I/ D.I Pipes and Specials

Supply and Fixing of Anchorage including all cost and conveyance etc Complete

Earth work Excavation below water level in light or sandy soil for infiltration gallory, syphon or connecting pipe line and connected works including shoring and strutting and charges for special tools and plants for bailing / pumping etc. such as air compressor and helmet.

Jointing the C.I/ D.I - S/S pipes and specials with molten lead and Yarn including caulking the joints. (Including cost of jointing materials)

Supply and Delivery of 40 HP submersible motor pump set (Three Phase) with duty condition of 2000LPM X 60m head etc., complete.

Supply and Delivery of Submersible Panel Board

Supply and Delivery of 120sq.mm 3 CORE FLAT TYPE COPPER CABLE-WD-M1967

Laying of 120sq.mm 3 CORE FLAT TYPE COPPER CABLEFor laying below GL. WD-M 2017 including earth work

Labour charges for the erection of 40 HP submersible pumpset WD-W 0875

DI D/F GATE VALVES Supply and delivery of DI D/F Gate (sluice) valves (soft seated) resilient seated soft sealing Gate Valves (Sluice Valves) with body Bonnet of Ductile cast iron of Grade GGG 40 or GGG 50, Wedge fully rubber lined with EPDM replaceable spindle nut without gland packing and with 3 O- Ring protection on the shaft and seals of NBR and the valves should be of Vacuum tight and 100% leak proof with face to face dimensions as per BS 5163-89/ISI 14846-2000/DIN 3202 F4. All the valves should be with electrostatic powder coating both inside and outside with pocket less straight through body passage. All the valves are to be compatible for buried application with pressure rating PN 10/16 and with 5 years warranty

DI Non - Return Valve Manufacture, Supply and Delivery of DI D/F Slanted seat Swing Check Valve. Body of ductile cast iron of Grade GGG 40 or GGG 50 and disc of ductile cast iron GGG 40 or GGG 50 with fully encapsulated EPDM rubber, where both faces can be used. Electrostatic epoxy powder/liquid coating (EP-P) inside and outside color blue RAL 5005 with minimum coating thickness of 250 microns. The EPDM rubber & Epoxy Powder should be approved by W 270. (EP-P) it is a resicoat powder approved for drinking water application, applied through fusion bonding process by dipping the shot-blasted casted components heated up to 200 deg C). Face to face dimensions as per EN558-1, series 48 and flange connections as per EN 1092-2/IS 1538 and with 5 years warranty

200mm DI Pipe

Supply and delivery of 200 mm dia 10 KSC PVC pipe

Earth work excavation with an initial lead and lift in hard stiff clay, black cotton, hard red earth, sub murram gravel, stone and earth mixed boulders as per SS20B.

Refilling excavated earth including all cost

Laying of PVC rigid pipes with lead of 200m lowering into trench, laying in proper grade, alignment, jointing PVC coupler with specials and tested to the required pressure including conveyance of water upto 1km lead during the testing.

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