Repair of pipe line leakage at NH Road in Mangalpur area under Balurghat Municipality

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.upto 150 mm depth/thickness(b) above 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.

(b)Depthof excavation foradditional depthbeyond 1,500mm. and upto 3,000mm. but not requiringshoring.

A) 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)

Rubber gasket joints to C.l./D.l. pipes and specials all complete to makes the joint water tight as required hydraulic pressure as per pecification and direction of the Engineer-in-charge. [Cost of Rubber. gasket of approved make induding supply to any point within the Kolkata Municipal Area shall be paid parately.] i) 500mm dia.

Cutting of C.l/D.I pipes for fitting with pipes and-or specials of similar or dissimilar materials at the time of laying without damaging any part of the required length including taking out of the broken pieces from the trench and restacking the same at the specified location as per direction of the Engineer-in-charge. i)500mm dia.

Supplying, fitting and fixing of C.I. Mechanical Compression flexible Collar Couplings suitable for C.I. Spun Pipes (as per IS: 1536) and D. I. Pipes (as per IS: 8329) complete with Sealing Rubber Gasket of EPDM quality (IS:5382/1985 Type - 4), Cast Iron Follower Glands and Mild Steel Nut Bolts (Zinc Coated). The whole assembly should be mechanically and Sl. No. Description Unit Rate 27 Water Supply Works 2018-2019 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 i) 500 mm dia

Inserting C.I./D.I. pipes and or specials in the gap formed by cutting existing C.I./D.I. main. bailing out water from the trench due to normal seepage. if any. including fitting. fixing of ncillary C.I/D.I. specials with supply of Spun Yam all complete to make the joints water tight at required hydraulic pressure as per specification and direction of the Engineer-incharge. [Cost of C.I/D.I. Specials. cutting of pipes. lead ioints. earth work in excavation road metal. earth work ill filling. shoring where necessary. shall be paid extra as per relevant items of schedule of rates.] i) 500

Supply of Single/Double bit SBR gasket suitable for jointing CI/DI pressure pipes, conforming to IS : 5382 : 1985 [Popularly known as ‘Tyton Gasket’] 500

Dismantling all type of masonry excepting cement concrete stacking servisable materials at site and removing rabbish as directed within a lead of 75m in ground floor including roof.