REPLACEMENT OF PUMPING MAIN

Amount

Earth work excavation for 250mm DI K7 pipe line trench 0.8m width and 1.20m depth in all types of soil and subsoil expect hard roack requiring blastering with in initial lead and it incuding all labour charges etc.,

Supply, delivery of DUCTILE IRON SOCKET/SPIGOT PIPES FOR CLASS K7 for potable water supply as per IS specification no. 8329/2000 and as amended from time to time with ISI marking of the following sizes and for delivery at site including loading, unloading, freight, stacking, conveyance to the work site etc., complete as directed by the Engineer-in-charge

Supply and fixing of DI Pipes and specials as per I.S. specification including packing, loading, unloading, freight, stacking and transist insurance etc.complete as per standard specification.

400mmx400mmx250mm DI All Socket Tee

400mm x250mm DI D/S Taper

250mm size 11¼º DI D/S Bends

250mm size 22½ DI D/S Bends

250mm size 45º DI D/S Bends

250mm size 90º DI D/S Bends

250mm size 90º DI D/F Bends

250mm DI Flanged Pipes 1.00M Length

250mm DI Flanged Pipes 2.00M Length

Supply and delivery of 250mm 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 equivalent grade, 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 out side with pocket less straight through body passage. All the valves are to be compatible for buried application with pressure rating PN 10/16 etc. complete as per standard specification

Manufacture, Supply and Delivery 80mm of Tamper proof DI single chamber double orifice triple function (ventilating, admiting & ventilating during operation) air release valve with pressure rating PN 10/16 with body and cover made of Ductile Iron of Grade GGG 40 or GGG 50, conforming to IS 1865 with Food Grade Epoxy Powder coating (EP-P) inside and for outside of colour blue RAL 5005. All internal parts such as float, shell etc., cover bolts, made of Austenitic alloy steel of SS AISI 304/316. The float shall be made of Polytetrafluroethylene/ Austenitic alloy steel of AISI 304/316. Gaskets and seals of EPDM / Neoprene rubber for TWAD Board works anywhere in Tamil Nadu and with 5 years warranty etc completed as per standard specification

Lowering the 250mm size DI K7 pipes and specials to trench and laying to proper grade and alignment as per standard specifications and as directed by the Department Officers.

Jointing the Following size of 250mm DI - S/S Pipes (Class K7) and Specials with rubber gaskets(tyton joint) including cost of lubricants ( including cost of jointing materials ) for depth upto 2m etc., complete and as directed by Departmental Engineers

Testing of 250mm DI pipes for water supply with hydraulic testing equipment by filling with water (including cost of water) and 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 for the following diametres of pipes etc complete as per standard specification

Refilling with excavated soil ( other than sand) complying with the standard specification in layers of 15 cm 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

M Rajasekar (BID ID -1530391)