Improvement of Tubewell Rajban

Excavation in drains and channels etc.in earth work for pipes up to all depths in all classification of earthwork such as pick work, jumper work, saturated soil including bailing or pumping out water, blasting soft/hard rock or chiseling soft / hard rock where blasting is prohibited in all lifts including jungle clearance wherever required, trimming & dressing of sides, leveling of beds to correct grade including shoring/struting, planking, timbering & dewatering wherever required stacking the useable/unuseable material/soil seperately & after laying, jointing & testing of pipes, returning the useable soil in trenches in 15 cm layers including consolidating of such deposited layer by ramming & watering & then disposing of all surplus excavated soil/unuseable material as directed with in all leads & lifts including restoration of un-metalled surfaces to its original condition & including cost of diversion for traffic, night signals, fixing caution boards, crossing over trenches for access to houses, fencing etc. complete in all respects with-in all leads & lifts as per directions of the Engineer Incharge.

RD Length in mtr Pipe dia in mm Wall thich in mm Flange Table 0 to 900 900 200 4.80 17

Providing and welding MS flanges as per table below confirming to IS:6392-1971(up to date ammendments) and welding of flanges with pipes as per IS: 816-1965 with a electrode as per IS 814-1967 including required Nos. and size of MS nuts and bolts as per IS: 1369-1967 and compressed asbestos fiber jointless gaskets sheets not less than 3mm thick as per IS:2712-1965.The welding of flanges to be done in three layers ( two out side +one inside) to make the joints leak proof and complete in all respects with in all leads & lifts as per directions of Engineer - in - charge.

200mm dia FT-17