304/2026/E2 Arresting leakages in Main line from CHB Colony Selvavinayagar Kovil to CHB Colony 4th Street Amman Jothida nilayam near Velur Road PSC/AC Pipe to MS Pipes and Specials- (400mm/350 dia Psc/AC Pipe and and Specials)

Earth work excavating and depositing on bank within initial lead of 10m and lift of 2m in all soils for foundation except hard rock etc., complete as per standard specifications

Supply and Delivery of MS specials with inside lining/epoxy coating as per IS 13260-1993 and outside coating with cement mortar 20mm thick as per IS 1916-1989 and IS 7322-1985 etc complete.,

Removal of old damaged joint items Upto 700mm dia PSC Pipes(446.20x60%) including all labour charges etc., complete.

Supply and delivery of the following pipes main leakage Jointing materials including cost and conveyance charges to site , etc complete as per standard specification.

Spunyarn

Lead wool.

Bostik Plug leak (Fast Setting Water Plug)

Hardcrete ( Concrete Hardening & Water Proofing liquid)

16 mm dia x 65 to 90 mm length fully threaded bolts and nuts with 2 Nos.

3 Ply R.I. Rubber insertion Sheet

Quick setting cement

Supply delivery and fixing of Chicken mesh (ferrocement) including cost of conveyance and labour charges etc complete.,

Jointing the PSC pipes upto 700 mm dia PSC pipes with cement joint work, and jointing materials etc., complete as per standard specification.

Lowering of M.S pipes and specials into the trenches and laying to proper grade and alignment and as directed by the TWAD Officers.

Upto 350mm dia MS Pipes

400mm dia MS Pipes

Labour Charges For Cutting open BT Road for laying water mains including all charges etc and complete as per standard specification, and as directed by departmental officers.

Supplying, erecting steel centering for sides and soffits including necessary supports and shuttering to the required height for RCC items using MS sheets or suitable size of BG 10 stiffened with welded MS angles of size 25mmx25mmx3mm of boarding, laid over silver oak joists of size 10cmx6.5cm spaced at 90cm c/c and supported by casurina props of 10cm to 13cm dia. Spaced at 75cm c/c complying with standard specification.

Plain cement concrete in 1:2:4 mix (one cement, two sand and four aggregate) using 20mm ISS hard broken granite from approved quarry including cost, conveyance of all to site, mixing, laying and curing charges etc., complete.

Towards the Labour charges for Existing pipe line damage rectification works Existing upto 600mm dia PSC Pipe Collar Leakage with Spunyarn, Hard Crete Oil, Quick setting Cement and grease etc Material including materials and labour charges etc.,

Dewatering using 5HP diesel engine pumpset including Hire charges, cost of Diesel, Engine oil, pump operator, labour charges, conveyance of pumpset and fuel to site and back, loading, unloading and any other incidental charges etc., complete.-5HP Motor-

Hire charges for lighting arrangements (500W focus light -4 Nos, 40 V Fluorescent Tupe-2 Nos and hand lamp-1 no) during night works due to emergency rate including lighting accessories power supply arrangements electrician etc.

Barricading work (Where the lines are in narrow width of municipality area, busy streets like Market, Bus- stand and in the Highways etc.) for laying of pipe line using casurina poles at 1.50m center to center (8cm to 10cm dia. and 1.80m height) vertical with horizontal poles in two rows, painting the vertical poles in the road facing sides with ready mix paint, tying the vertical and horizontal poles with coir rope including supplying, delivery and fixing of GI sheet (0.90m x 0.8mm thick) in the horizontal poles and fixing 75mm dia. reflectors including earth work excavation for fixing vertical posts and finally removing and stacking the materials safely for further use etc., complete and as directed by TWAD Board officers.

Rate For Hire Charges For Portable Tools etc complete.,

III Phase Welding Machine

Gas Cutting Unit

Power Generator

Refilling the excavated earth into the pipe trenches including cost of labour charges etc, complete.

Welding of 700mm dia MS Pipe Jointing including Transported of welding accessories to worksite, cost of welding rods, all labour charges etc., complete as directed by department officers.

add GST 18%

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