Kolkata Metropolitan Development Authority Tender

Hire and labour charges for shoring works in foundation/pipeline trenches or drains including necessary close plank walling, framing, sal bullah pilling, strutting etc of adequate sizes all complete as per direction of the Engineer-in-charge (vertical surface of contact area with supported earth is to be measured). (a) Depth upto 1.50 Metre.

(b) Depth beyond 1.50 Metre up to 3.0 m

Supply of Steel Plate as per IS specification. (a) 10 mm Thick Plate.

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)

Fabricating M.S. Specials of different diameter in shop out of 8 mm to 12 mm thick M.S plates supplied departmentally, cutting the plates to exact size & shape by gas cutting device and/or by adopting any other approved type of mechanical means, bending the same in true curvature by template and rolling machine of approved design including proper marking, levelling joints followed by electric arc welding - longitudinal and circumferential, as necessary, using standard electrodes as per I.S. specification including edge preparation, preparation, electricity electricity charges charges and hydraulic hydraulic testing testing of the fabricated fabricated piece all complete as per specification and direction of the Engineer-in Charge. [ The Engineer-in-Charge shall approve the electrodes for are welding before use. Fabrication of M.S. flange to form M.S Flanged Tail Piece shall not be considered as M.S. special ] (A) 1200 mm dia.

Gas cutting of M.S. pipes and/or plates of different thickness all complete as per specification and direction of the Engineer-in-charge.ground moulded chamber burnt bricks with including cost (a) 10 mm thick Plate

Field welding of M.S. plates by means of electric arc welding as per relevant I.S. specification using standard electrodes including edge preparation and charges of deployment of electric generation set with fuel, lubricant and all other tools and plants all complete as per specification and direction of the Engineer-in-charge. (a) 10 mm throat Thickness.

Dewatering by pumps including all leads, lifts and making all arrangements of disposal. where continuous flow of water from a source other than natural or ground water is encountered in case of emergency maintenance works related to leakage. breakage and making wet connections. [Note ;-In case of any other situation demanding such emergency dewatering. use of this item is to be approved by the Superintending Engineer/Tender Accepting Authority. This item shall be executed on the specific direction duly supported by proper clarification of the E.I.C. who will be satisfied in absolute discretion that such work has not been necessitated due to any natural source of water or any fault of the Contractor]

Hire & labour charges for diesel generating set for lighting including fuel, 300M wire, 11 points with 200 Watt bulb with post for hanging & maintaining the same for day & night for the period.

Earth work in filling in trenches and pits with good earth obtained from excavation of trenches and pits including consolidation by watering and ramming in layers not exceeding 150 mm etc. complete as per instruction (payment to be made on the basis of finished quantity)

Filling in foundation or plinth by silver sand in layers not exceeding 150 mm as directed and consolidating 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)

Single brick flat soling of picked jhama bricks including ramming and dressing bed to proper level and filling the joints with local sand.

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement, if any,in ground floor as per relevant IS codes. a) Pakur Variety

Add GST @ 18 % over sum of Sl No 1 to 14

Add GST @ 18 % over the sum of Sl No 1 to 15