EE/GRWW/PH-IV/16/2026-27

Earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or stacking the spoils within a lead of 75 m. as directed. The item includes necessary trimming the sides of trenches levelling, dressing and ramming the bottom, bailing out water as required complete. (a) Depth of excavation not exceeding 1,500 mm.

Carriage of CI / Dl / ERWMS / AC pipes including loading into truck at the lifting point, unloading at destination and stacking properly in godown or yard etc. as directed (Including carriage by head load upto 30 metres at each of the two points. The rate covers all the above operations, actual transport all complete.diameter in mm 125 carriage....carriage....diameter in mm 300 upto 5km

Lowering any type of Ductile Iron (DI) pipes & specials and laying along trench at any depth as per speclfication and direction of the Engineer-incharge, ( laying over ground. the rates shall be, reduced by 10% and the rates so reduced shall be inclusive of cost of all sorts of holding arrangements]Diameter in mm 300mm dia.

Rubber gasket joints to C.l./D.l. pipes and specials all complete to makesthe joint water tight as required hydraulic pressure as per specification and direction of the Engineer-in-Charge.[Cost of Rubber. gasket of approved make induding supply to any pointwithin the Kolkata Municipal Area shall be paid separately.}Diameter in mm 300mm dia

Supply of Single/Double bit SBR gasket suitable for jointing CI/DI pressure pipes, conforming to IS : 5382 : 1985 [Popularly known as `Tyton Gasket...]300mm dia

Supply of M.S. Flange (slipper type) as per IS-6392 TABLE 17 Thickness - 20mm -22mm NB Diameter in mm 250

Cutting to requisite length or shape departmental R.S. joists,channels, angles, tees, plates etc. (Payment to be made on area of cut surface)

Welding in M.S. structural work with gas or electric: (a) Tack weld

Welding in M.S. structural work with gas or electric: (b) Continuous weld.

Supplying including cost of installation of D.I. Dismantling Joints is a variable length Double Flanged Short Piece constituted by a flange / Spigot Tailpiece inserted into the other Tailpiece which allows the distance betweenthe two flanges to be varied within certain limits thus providing a variable distance piece between two fixed flange end devices like Pumps and Valves. The Dismantling Joint to be supplied complete with Sealing Rubber Gaskets of EPDM quality (IS:5382/1985 Type-4), Cast Iron Follower Glands and Mild Steel (Zinc Coated) Nut Bolts as per manufacturer specification. The whole assembly should be mechanically and hydraulically tested to the provisions as laid down in IS: 1538. Fitting and fixing should be in proper position with proper care of main pipe line for leak proof condition. Diameter in mm. with minimum barrel pipe length in mm. 300mm with length 235 to 360mm