tender for urgent maintenance and repair of tala palta main water supply line leakage at infront of purbachal cluster-13 gc block (infront of umesh chanda college) and amul island (gujrat co-operative milk marketing fedaration limited) of bidhannagar sector-iii within bidhannagar municipal corporation. (fund : general fund) sl. no. item description 1 cutting & picking up existing metalled black top portion of road surface to an average depth of 300 mm by using jack hammer with all necessary tool and plant including reening the serviceable materials & stacking within a lead of 75 mtr. all complete as per direction of the engineer-in- charge. 2 earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding later tile 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 as required complete. (b) depth of excavation for additional depth beyond 1,500 mm. and upto 3,000 mm. but not requiring shoring 3 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). (b) for additional depth beyond 1.5 m. and upto 3.00 m 4 supplying, fitting and fixing of c.i. mechanical compression split collars suitable for instantaneous repair of longitudinal and vertical splits in c.i. spun pipes (as per is: 1536) and d.i. pipes (as per is: 8329) by encasing the damaged part completely. the split collars to be supplied 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 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.200mm with length 300mm. 5 250mm with length 300mm. 6 600mm with length 400mm. 7 lead jointing to c.i pipes and specials with supply of lead and spun yarn all complete to make the joint water tight at required hydraulic pressure as per specification & direction of the engineer-in-charge.200mm dia. 8 250mm dia 9 600mm dia. 10 hire charges of pump with all accessories and p.o.l including all charges and carriage of pumps 5 h.p 11 earth work in filling in foundation trenches or plinth with good earth, in layers not exceeding 150 mm. including watering and ramming etc. layer by layer complete. (payment to be made on the basis of measurement of finished quantity of work) (b) with earth obtained by fresh excavation (including cost of excavation upto 1,800 mm. depth) from land arranged by the deptt. within a lead of 100 m.