WS/GRWW/WTP-II/09/2026-27/09

Dismantling all types of plain cement concrete works, stacking serviceable materials at site and removing rubbish as directed within a lead of 75 m In ground floor including roof. (a) upto 150 mm. thick

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.

Sypply of E.R.W.M.S. (Electrical Resistant Welded M.S.) black pipe of ISI Mark as per relevent IS Specification ( heavy quality ) having wall thickness not less than 5 mm. [N.B.: The rates for supply of TATA Make pipe will be arrived at by adding 20% of the corresponding rates ] Diameter in mm (Internal)100

Derusting, scraping, brushing and cleaning (to the extent of exposing the original surface) the outer surface of manufactured M.S. 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 : 15337 : 2003 of approved make and applying the 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 ElC. Each layer of protective wrapping shall be tested with Holiday detector at Contractor's cost and the Contractor' shall repair all holidays to the satisfaction of ElC at no extra cost (Payment will be made on finished area of work)

Coating of 'Epoxy' Resin of thickness not less than 160 micron with a lowviscosity,crystallization-resistant epoxy resin base with a reactive diluents combined with high build epoxy amine adducts as per BS 5493 standard and a polyamide or amido polyamine or any other suitable hardener. It shall react with epoxy resin at normal ambient temperature, suitable for solvent-free coatings as per recommended proportion for use on metal,concrete and wood surface to protect from corrosion as well as damagefrom chemical reaction after making the surface free from dust, oil and moisture etc. all complete as per instruction and to the satisfaction of ElC. [This item will be operated on prior permission from the concerned SE/Dy Chief Engineer]

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

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: (b) Continuous weld.

Hydraulically testing of C.l./D.I/A.C pipe lines in sections, under a head of water not less than 60m{6Kg/Cm....pressure) or above as per specific requirements by filling the main with supply of water including supply of all specials and equipments like pump sets, gauges, end caps blank flange etc.all complete as per specification and direction of the Engineer-in-Charge.[After successful completion of test. removal of ancillary specials.equipments. plugging arrangements and disposal of water sholl be made at no extra cost] Diameter in mm 100

Filling in foundation or plinth by silver sand in layers not exceeding 150 mm as directed and onsolidating the same by thorough saturation with water, ramming complete including the cost of supply of sand. (payment to be made on measurement of finished quantity)