Repairing and Replacement of Damaged Pipeline , River Crossing and Road crossing at Various portion for uncovered Area of Paschim Khairbari PWSS under Alipurduar Division, PHE Dte.

Carrying CI/DI pipes with specials and valves and lowering placing in position and laying carefully inside the trenches in proper alignment and gradient etc. including earth work in excavation of adequate width as per specification having min. clear cover from top of pipe is 1.10mtr. below existing ground level in any kind of soil including mixed with boulder, road sub-grade and its flank,but excluding moorum and laterite and stone etc.without damaging the exisiting telephone/electric cable etc.(in case of damaged if any type of cable line during excecution , necessary damaged charges as applicable by the respective authority will be borne by the agency in his own cost) preparing the bottom surface for continuous bedding of pipe line and laying pipes, fitting, fixing specials and valves with bailing out water if any including carriage of pipes, specials and valves from local deptt. store within 8 KM and back filling the trenches with excavated earth in layers to original condition as per specification and direction of EIC. The surplus materials after execution of work are to be return to the deptt. store. N.B: i) Any deviation from required clear cover of 1.10mtr., due to site adverse condition, prior permission is to be obtained from the EIC in exceptional situation and payment will be made on prorate basis over the rate of entire item. ii) No payment will be made without hydraulic test of the pipe line either part or full iii) The pipes, specials and valves , rubber gasket will be supplied deptt. free of cost. 100 mm (OD)

150 mm (OD)

200 mm (OD)

Making rubber gasket joint to CI/DI pipes maintaining proper alignmentlevel etc. by mechanical arrangement with or without using mobile cranes where necessary and with help of all other equipmen tstools andtackles etc. as required providing lubricants of approved quality and direction of EIC. (rubber gasket will be supplied deptt. free of cost) 100 mm (OD)

150 mm (OD)

200 mm (OD)

Making flange joint to DI/CI pipes, specials and valves where necessary with supply of required rubber insertion and nut bolts, washers etc. of approved quality and type all complete as per specification and direction of EIC (Nut and bolts shall be of TATA/GKW rate). 100 mm (OD)

150 mm (OD)

200 mm (OD)

Supplying HDPE (Materials grade PE-100) pipes conforming to IS 4984-1995 with latest revision & amendments if any with necessary HDPE specials (excluding cost of CIDF valves) including labour charges for earth work in excavation in any kind of soil including mixed soil with boulder,road sub-grade and aits flank but excluding moorum laterite or sand stone / hard rock cutting with chisel required including cutting road flank/ brick pavement etc. without damaging the exisiting telephone/electrical cable line etc.(in case of damage of any type of cable line by the agency at the time of execution necessary damage charge as applicable by the respective authority will have to be brone by the agency at his own cost)upto the depth (av.) so as to maintain 1.10m.earth cushion from top of the pipe upto G.L. including loading unloading carrying lowering laying fitting fixing carefully pipes, valves and specials with the all types of jointing materials in trenches maintaining proper levels and alignment jointing the pipes and specials by butt welding/ adopting suitable method (But weld jointing with help of hydraulic tack and trimming machines, Hitter etc. for reaching at necessary melting point of HDPE pipe so that joint can be monolithic) so as to facilitate the maintenance of pipe line locally as per conventional method in future. i) Laying of pipe line including cost of pipe only excluding cost of specials/fittings valves. a) 75mm(OD)