Providing Infiltration well and allied civil works at in River Tamiraparani and Providing 150mm dia DI pumping main across Tamiraparani River at Urkadu Sudalaikoil pumphouse for Velayuthanagar OHT in Ambasamudram Municipality

Cement Concrete 1:2:4 (One Cement, Two crushed stone sand and Four hard broken stone jelly) using 20 mm gauge hard broken granite stone jelly for all RCC items of works excluding cost of reinforcement grill and fabricating charges, centering and shuttering but including Super Plasticiser, mixing charges for machine mix, laying, vibrating with mechanical vibrators, finishing, curing, etc. and providing fixtures like fan clamps in the RCC floor / roof slabs wherever necessary and bearing surfaces of walls, beams etc. shall be finished smooth with Cement Mortar 1:3 (One Cement and Three Sand) and kraft paper laid over it without claiming extra, etc., complete complying with standard specification and as directed by the departmental officers - machine mix

Sinking of infiltration well of 4.50m internal dia and 5.5m external dia below water level including ali incidental charges using specel Tools and plants such as aircompressor, helmet etc., complete and including baling out water. 1st Depth

2nd Depth

3rd Depth

Porous concrete in CC 1:4 (One cement and four hard broken granite jelly of a size 20mm) for steining wall for infiltration well including cost and conveyance of materials excluding cost of centering but including all labour charges for mixing mortor, curing and all other incidental charges therefore etc complete.

Supplying and erecting centering for plane surfaces such as RCC Floor/Roof Beam, Lintels, Cantilever Beams, Bed Blocks etc.. with necessary supports and strutting upto 3.60m height in all floors with all cross bracings using MS Sheets made of 10 gauge thick welded with MS angle of Size 25mm x 25mm x 3mm for boarding laid over Steel adjustable Span of Size 2m x 2m(expandable upto 3.60m) and Silver Oak Joists of Size 10 x 5 cm spaced at 50cm to 60cm c/c and supported by Steel Adjustable Telescopic Props of Size 2m x 2m (expandable upto 3.60m) made with outer steel pipe with dia 50mm (3.60mm thick) and inner steel pipe with dia 40mm (2.90mm thick) Spaced at not more than 50 to 60cm c/c , etc complete complying with standard specifications. Steel adjustable span and Steel Adjustable telescopic props shall be provided as directed by the departmental Officers. (Payment for centering shall be given after the concrete is laid). For Plane surface

For curved surface

Supplying, fabricating and placing in position mild steel or tar steel bars for all reinforced cement concrete items of work including cost of steel transporting, straightening, cutting, bending, cranking, blinding, welding etc. including cost of MS or RTS rod and binding wire, all labour and materials complete Complying with standard specifications and drawings and has directed by departmental Engineers.

Supply delivery and fixing in position of CI man hole cover with frame of 60cm x 60cm x with locking arrangement including cost and conveyance of materials and all labour charges including all other incidental charges therefore etc complete and as directed by departmental officers.

Supply delivery and fixing of CI steps in position at 30cm centre to centre in staggered manner as directed by departmental officers including cost and conveyance of materials and all labour charges including all other incidental charges therefore etc complete.

Providing ventilating arrangements by fixing in position 100mm GI pipe with necessary Tee and Bends and as directed by departmental officers including cost and conveyance of materials and all labour charges including all other incidental charges therefore etc complete.

Providing confirmatory bores to uncertain sand depth and locating well site before commencing the work as directed by departmental officers including all T&P required and all labour charges including all other incidental charges therefore etc complete.

Providing for cutting edge using 12G MS sheets as directed by departmental officers including cost and conveyance of materials, all labour charges and including all other incidental charges therefore etc complete.

Painting two coats for Interior surface with approved Interior Plastic Emulsion paint approved quality and colour over a priming coat, including thorough scrapping, clean removal of dirt, etc complete and including necessary plaster of paris, putty, wherever required etc, complete as per standard specification.

Plugging the bottom of the well with coarse sand of approved sizes and grade as directed by the Board officers as directed by departmental officers including cost and conveyance of materials and all labour charges including all other incidental charges therefore etc complete.

Providing M.S channel of ISLC 200 of 5.40m length 2 nos as directed by the departmental officers including cost and conveyance of materials and all labour charges including all other incidental charges therefore etc complete. etc., complete including painting and fittings etc., complete.

Construction of a typical cofferdam using sand bags and casurina poles around the infiltration well for raising the bund 0.30 m above the water level (at the time of construction of infiltration well) for erection of well curb and diverting the river flow as directed by Dept. Officers including cost of sand, gunny bags including cost and conveyance of all materials and all labour charges for filling, stitching charges and stacking including all other incidental charges therefore etc complete.

Earth work excavation and depositing on bank with initial lead of 10 m and lift of 2 M in narrow trenches having bed width 1.25m & below for laying of pipes for water supply and sewerage works in the following type of soils as directed by Departmental officers Sand, silt or other loose soil, wet sand or silt not under water light black cotton soil, sandy loam and ordinary soil.SS20B

Hard stiff clay, stiff black cotton, hard red earth, shales, murram gravel, stoney earth and earthmixed with small size boulders and hard gravelly soil.SS20B

Earthwork excavation below water level in light or sandy soil for infiltration gallery, 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..

Supplying of DI 150 mm D/F Pipes as per IS 8329/2000 including cost, conveyance and all other incidental charges therefore etc complete. . 100 mm DI D/F Pipe - 1 m

150 mm DI D/F Pipe - 1 m

150 mm DI D/F Pipe - 1.5 m

150 mm DI D/F Pipe - 2 m

150 mm DI D/F Pipe - 2.5 m

150 mm DI D/F Pipe - 3 m

Supply and delivery of DI D / F Specials as per IS 9523/2000 including cost, conveyance and all other incidental charges therefore etc complete 150 mm DI D/F Non Return Valve

100 mm DI D/F Non Return Valve

150 mm DI D/F Gate (Sluice) Valve

100 mm DI D/F Gate (Sluice) Valve

150 mm DI D/F 90° Bend

150 mm DI D/F Duck Foot Bend

150 mm DI A/F Tee

100 mm DI A/F Tee

DI D/F Taper 150x100 mm

100 mm DI D/F 90° Bend

Lowering of 100 mm DI Pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers.

Lowering of 150 mm DI Pipes and specials in the trenches and laying to proper grade and alignment and as directed by the TWAD Officers.

Jointing the 100 mm D.I Double flanged pipes and specials with rubber insertion to with IS638(1979) and M.S. bolts and nuts of IS 1364- 1 (2002), including cost of jointing materials such as bolt and nuts Rubber insertion and labour charges etc., complete.

Jointing the 150 mm D.I Double flanged pipes and specials with rubber insertion to with IS638(1979) and M.S. bolts and nuts of IS 1364- 1 (2002), including cost of jointing materials such as bolt and nuts Rubber insertion and labour charges etc., complete.

Refilling with excavated soil ( other than sand ) complying with standard specification in layers of 15cm watered well rammed and consolidated after the pipes and specials are laid , jointed and tested etc. and removing and depositing the surplus earth complete as directed by the Engineer - in - charge.

Refilling with excavated sandy soil complying with standard specification in layers of 15cm watered well rammed and consolidated after the pipes and specials are laid , jointed and tested etc. and removing and depositing the surplus earth complete as directed by the Engineer - in - charge. W-0074 (SOR 2024-25, Pg No.29)

Testing 100 mm DI pipes with hydraulic testing equipment by filling with waterand testing to recommended pressure in convenient stretches and attending the bursts if any occured during the test , excluding the cost of pipes but including other incidential and operational charges etc. , complete.

Testing 150 mm DI pipes with hydraulic testing equipment by filling with waterand testing to recommended pressure in convenient stretches and attending the bursts if any occured during the test , excluding the cost of pipes but including other incidential and operational charges etc. , complete.

Supply and delivery of 80 mm G.I. Pipe (medium) as per IS 1239/PART I/200 including cost, conveyance and all other incidental charges therefore etc complete

Laying of G.I. Pipes and specials to proper line and level including jointing but excluding cost of pipes and jointing materials for plumbing works for providing water supply and sanitary works.

Supply and delivery of GI Specials as per IS 1239/ PART II including cost, conveyance and all other incidental charges therefore etc complete 80 mm GI Flange

80 mm GI 90° Elbow

80 mm GI Coupling

Providing anchorage arrangements,supply and delivery and fixing of M S clamp sets to suitable 100 mm GI pipe with flat 75 mm X 6 mm angle size of 75 X 75 X 6 mm for the length of 1.00 Mtr and clamp for holding anchorage pipe 80 mm GI pipe including cost of pipe ,bolt ,nuts, and labour charges for fixing M S clamp set for connecting main

Supply and Delivery of PVC Insulated and sheathed 3Core Flat copper cable confirming to IS 694/1990 with ISI make.

Jointing of Insulated and sheathed 3Core Flat copper cable confirming to IS 694/1990 and amended thereafter .

Laying of PVC Insulated and sheathed 3Core Flat copper cable confirming to IS 694/1990 with ISI make.

Labour charges for erection of 30HP submersible pump set in infiltration well including fixing and jointing submersible cable with proper clamps upto the starter to required dipth and also fixing of riser pipes to the required depth valves erection clamps, pressure Gauges upto the exterior wall of pump room and erection of panel board consisting of TPICN switches starter, Voltmeter, Ammeter, Three pilot (Indicating) lamps capacitor single phasing preventer, water level guard and laying and jonting the cables and twin earthing as per IE rules etc., complete and testing the pump set and trail run for ten days

Provision for GST 18%