Bypass arrangement of sewerage pumping main from SLS-IIIF and SLS-IIIC on 600mm dia. and 250mm dia. MS pipe and allied works under New Town Kolkata Project.

Coast of MS spirally welded pipe in Bare condition as per IS:3589-2002, Gr- Fe410, per Meter length of Different diameter and thickness including cost of loading, unloading and freight charges (@ 1480 Km from factory to delivery at site, excluding GST and Cess ANNEXURE-A rate @ Rs-Per mtr. 12mm thick 250 mm Dia (ID)

600 mm Dia (ID)

Derusting, scraping, brushing and cleaning (to the extent of exposing the original surface) the outer surface of manufactured MS pipes and specials, applying first coat of synthetic primer Type-B as per IS: 15337:2003 of approved make over it and wrapping the same with coal tar based insulating tape 2 mm thick as per IS: 5337:2003 of approved make and applying second coat of synthetic primer Type-B (as specified above) over the first layer of insulating tape and wrapping the same with second layer of 2 mm thick coal tar based insulating tape (as specified above) in staggered pattern (including overlapping at ends) by torching etc. as per manufacturer’s specification and as per direction of EIC. Each layer of protective wrapping shall be tested with holiday detector at Contractor’s cost and the Contractors shall repair all holidays to the satisfaction of EIC at no extra cost (Payment will be made on finished area of work)

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.

(b) Depth of excavation for additional depth beyond 1,500 mm. and upto 3,000 mm. but not requiring shoring.

Hire and labour charges for shoring work (including necessary close plank walling, framing, Eucalyptus/Jhou bulla piling, strutting etc) complete as per direction of the Engineer-in-charge for foundation excavation (vertical surface are in contact with supported earth is to be measured.) (This item should be executed on specific direction of the Enginner in charge). (a) Depth upto 1.5 m.

(b) For additional depth beyond 1.5 m. and upto 3.00 m

Lowering MS pipe and Specials in trench upto a depth of 3.0 meter below GL, Laying and jointing the same inside the trench/ Over ground by means of Granty / Hydra and field joint by means of Eletrical arc welding using standard Electrodes per IS specification etc all complete refer to- ANNEXURE-B rate @ Rs-Per mtr.[Note:- For laying over Ground the rate shall be reduced by 10 % and that is inclusive of holding arrangement] 250 mm dia.

600 mm dia.

Cutting DI pipe (all class & type) to required length with cutting device etc. and grinding the cutting portion with file as per direction and satisfaction of EIC c) 250mm.dia.to 350mm.dia pipe