Providing of internal plumbing for water supply HSC at Zone one in Tambaram City Municpal Corporation

Labour for cutting open road for laying water mains or sewer.B.T. Roads (or) Maccadam road (TWAD

At HDPE/PVC Main

Earth work excavation and depositing on bank with initial lead of 10 m and lift of 2 M in narrow trenches for laying of pipes for water supply and sewerage works in the following type of soils Hard stiff clay, stiff black cotton, hard red earth, shales, murram gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil SS20B as directed by Departmental officers (TWAD

At Main Pipe

HSC Connection in HDPE / PVC Mains for Water Supply Scheme , delivery of the following Electrofusion tapping saddle PE 80 blue, PN 12.5 with female threaded metal insert of SS 304 as per standards BS EN 12201 tested as per BS 6920 for drinking water in WRCNSF ltd, UK. (Non Wrap with top loading type). Sizes:63mm to 315mm dia distribution HDPE pipes. shall as detailed in a drawing furnished. (TWAD

Supply, delivery of Brass Ferrule as per IS 319 grade of sizes 15mm, 20mm and 25mm size and threaded as per IS :554 BSPT, ISO:7- 1 to suit the corresponding bore sizes of 15mm dia size ( 1/2", ) in the saddle Connection as per IS :554 BSPT, ISO:7-1 (TWAD )

Supply, delivery of Poly Propylene compression Male Threaded Adaptor with metal insert of SS 304 as per standards ISO 14236 and Tested as per BS 6920 in WRCNSF LTD, UK suitable for 20mm, OD MDPE pipes (TWAD )

Supply, delivery of Poly propylene 90 Degree Compression elbow with compression joint at both ends as per standards ISO 14236 and Tested as per BS 6920 in WRC-NSF LTD, UK suitable for 20mm OD MDPE pipes (TWAD )

Supply, delivery Poly Propylene compression Female Threaded Adaptor with metal insert of SS 304 as per standards ISO 14236 and Tested as per BS 6920 in WRC-NSF LTD, UK for connecting 20mm, 20mm and 25mm outlet points of Brass ferrule of sizes 15mm respectively. (TWAD )

Supply, delivery of MDPE PE 80 Blue pipe as per standards ISO 4427 and Tested as per BS 6920 in WRC-NSF LTD, UK (TWAD )

U PVC ball valve with one side compression end and other side female end as per ISO 4422-4 and Tested as per BS 6920 in WRCNSF LTD, UK,size : 20mm ODx1/2"ID, 25mm ODX1/2"ID and 32mm OD X 3/4" ID (TWAD )

Lowering MDPE pipes and specials to the trench and laying to proper grade and alignment, jointing with couplers with cement past etc complete for the pipes size upto 40mm dia OD MDPE Pipes (TWAD )

Jointing MDPE Pipes and Specials by butt fusion weldiEng / electro fusion welding joints using fusion equipment as per ISO 21307- 2011 and as per IS 7634 (part-2) : 2012 including cost of hire charges for butt fusion equipment power supply arrangements etc., complete as per HDPErected by Department Officers. (TWAD )

Supplying, Laying, jointing of following DI specials of as per IS:9523-2000 with D.I pipes etc., complete as directed by the Engineer, and Provision for pipe connection arrangements for inlet, outlet, scour and overflow etc, including cost of pipes, specials, valve, labour charges for lifting, aligning, fixing of DI pipes etc, complete.