Supply laying and jointing of 200 mm DI Pipe -2800m laying of 350 mm DI Pipe -2000 m from Aachimadam

Supply and delivery of the following sizes of DUCTILE IRON SOCKET/SPIGOT PIPES FOR CLASS K7/ K9 AS PER IS 8329/2000 other specifications including transportation to stock yard any where in Tamilnadu etc., complete and as directed by TWAD Board officers

250 mm DI K7 CL

Supply and delivery of the following sizes of DUCTILE IRON CLASS PN10 FLANGED PIPES 4.0 m length AS PER IS 8329/2000 other specifications including transportation to stock yard any where in Tamilnadu etc., complete and as directed by TWAD Board Officers (For Culvert Crossings)

250 mm DI d/f pipe

Supply and Delivery of MSpipes of the following dimensions as per Table- 5 of IS 3589/2001 fabricated with Fe410 grade steel conforming to IS 3589:2001 and other allied codes. 1) Pipes shall be internally lined with plant applied cement mortar lining 1:2, The Lining thickness range from 6 mm to 12 mm for the pipes below as per Table -8 of IS 3589:2001ex -B ,Clause- 1.2 of IS 3589:2001 2) Pipes shall be externally coated with Coal Tar Enamel Wrapping Tape as per IS 15337:2013 inclusive of transportation charges anywhere in Tamilnadu For Trenchless Crossings

508 X 6.3MM tk pipe

Supply and delivery of DI specials of conforming to IS 9523/2000 specifications at site of work including loading, transportation, unloading, insurance etc., complete and as directed by the TWAD Board officers - For K7 Pipes

250MM X 90' DI D/F Bend 44kg x 18 Nos

Supply and delivery of DI specials of conforming to IS 9523/2000 specifications at site of work including loading, transportation, unloading, insurance etc., complete and as directed by the TWAD Board officers

250 mm DI Flanged Socket Tailpiece 27kg X 4

Supply and delivery of following sizes of CI D/F Sluice Valves for nominal pressure, Air Valves, Non return Valve, Butterfly valve and Gate valve suitable for operating with CI handle and key rod etc., specials, Surface box and other jointing materials inclusive of transportation charges anywhere in Tamilnadu and as directed by TWAD Board officers.(As per Annexure)

250 mm DI D/F Gate Valve in 250mm DI main

200 mm DI D/F Gate Valve in 250mm DI main

80 mm DI Single Chamber Air Release Valve in 350 mm DI main

Cost of Unloading, stacking at stock yard and Conveyance from stock yard to site (maximum of 8Km radius) as per TWAD Board SOR 2023-24 Footnote

Earthwork excavation and depositing on bank with initial lead of 10m and lift of 2m in narrow trenches for laying of following sizes of pipes for water supply Standard trench width of in hard stiff clay, stiff black cotton, hard red earth, shales, murrams gravel, stoney earth and earth mixed with small sized boulders and hard gravelly soil etc., complete

250 mm DI K7 CL

Refilling with excavated soil (other than sand)complying with standard specification inlayers of 15cm watered well rammed and consolidated after the pipes and specials arelaid,jointed and tested etc. and removing and depositing the surplus earth at the places

250 mm DI K7 CL

Lowering DI pipes to trench and laying to proper grade and alignment and testing to the required pressure including conveyance of water for filling during testing excluding cost of materials etc., complete

250 mm DI K7 CL

Jointing the DI pipes and specials with rubber gaskets ( tyton joint ) including cost of lubricants testing to the required pressure with water ( including cost of jointing materails ) etc., complt

250 mm DI K7 CL

Jointing the C.I/ D.I Double flanged pipes and specials with rubber insertion to the required specifications with M.S. bolts and uts, complete.(including cost of jointing materials)

250MM DI D/F Pipe

Charges for single joint Bevelled Ends circumferential butt welding for the joint of following thickness of MS pipe with bevelled ends which shall be bevelled to an angle of 30 degree measured from the line perpendicular to the axis of various diameter by matching the ends exactly after properly cleaning, preparing the surface and welding as per IS 3589 (2001) using suitable welding electrode as per IS 814 (Part 2) -1974 (E6010 /E6011/E7016/ E76018) for required thickness. Welding shall be done so that there shall be thorough fusion and complete penetration. Prior to welding, the ends of the pipes shall be fitted closely and they shall be held firmly while welding. Welding the joints shall be done both inside and outside of the pipe of 600mm diameter and above and the joints shall be neatly grinded and finished without any undulations.

The cost of welding shall include surface preparation, suitable branded welding rod, hire charges for suitable capacity of portable welding machine with suitable electric power generator, Gas cutting equipments with all accessories, labour charges for skilled welder and helper including providing inside lining/epoxy coating as per IS 13620-1993 and outside coating with cement mortar of 20mm thick as per IS 1916-1989 & IS 7322-1985 and all other incidental charges etc complete.

508mm x 6.3mm tk MS Pipe

Cutting D.I. Pipes true to axis and filing smoothly and finishing the ends complete

250 mm DI K7 CL

Testing of M.S. / C.I. / D.I / P.V.C. / H.D.P.E pipes with hydraulic testing equipment by filling with water (includin cost of water @ Rs. 60/KL) and testing to recommended pressure in convenient stetches and attending the bursts if any occured during the test, excluding the cost of pipes, including other incidential and operational charges etc., complete for the following diametres of pipes.

250 mm DI K7 CL

Construction of following masonry valvepit as per TWAD type design for the following Sluice valve including earth work excavation for foundation, PCC 1:4:8 using 40 mm HBG metal for levelling course, Brick work in CM 1: 5 for side wall, plastering with C M 1: 3, 12 mm thick, RCC 1: 1.5:3 using 20 mm HBG stone jelly for precast cover slab, providing PCC Stone in CC 1: 3:6 using 20 mm HBGS including supplying, fabricating, placing RTS grills including charges for fixing surface box, refilling the sides of the pit etc., complete and as directed by TWAD Board officers.

250 mm DI D/F Gate Valve in 250 mm DI main

200 mm DI D/F Gate Valve in 250 mm DI main

80mm DI single chamber air release valve

Providing thrust blocks in RCC 1:1.5:3 using 20 mm HBG metal including cost of centering, shuttering & strutting and reinforcement, laying of concrete ,curing & finishing etc complete In K7 pipes as directed by TWAD Board Officers.

250mm DI 90' Bend

Excavating of driving pit and receiving pit of size 3.00m (length) x 3.50m (breadth), depth upto 5m in all soil including shoring and strutting using 6mm tk MS Plate of size 3.50m x 3.50m usable for 15 operations and providing 16mm thickness MS plate of size 3.00m x 3.50m with 100mm x100mm x 12mm angles of 4m length for holding the MS plates for Thrust arrangements to receive the impacts 4 during pushing operation of encasing pipe. Lowering the following size of MS encasing pipe by using Contractor’s crane and machineries and jointing MS pipes by welding, across the National Highways/State Highways/ Railways/Canal crossing etc and driving the horizontal bore by pushing / jacking method (trenchless technology method) using contractor’s machineries such as cranes, jacks, jacking materials, generator, welding machineries, compressor, jack hammer and other equipments etc. without interfering and causing any hindrance to the movement of traffic or any other vehicles, without any disturbances to the railway/road/canal formation etc. including bailing / pumping of water where ever necessary without affecting any installation like water supply pipeline/telephone cable, electric cables etc. passing nearby area and scooping the earth inside the pipes and pit and depositing the surplus earth in a convenient place and leveling the site after completion of entire work as directed by TWAD Engineers. The rate includes the cost of driving pit, thrust bed/wall and receiving pit to the depth of om to 5m excluding the cost of MS pipes.

For 250 mm DI K7 pipes, 508mm dia 6.3 mm thick Pipe

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