Himachal Pradesh Irrigation And Public Health Department Tender

Excavation in foundation and trenches etc. in earth work in all lifts in all kinds of soil such as pick work, jumper work, blasting work in soft/hard rock chiseling/wedging out of rock) where blasting is prohibited saturated soil including bailing/pumping out of water stacking the excavated soil in 15cm layers, when required in to sides of foundation etc. consolidating each deposited layer by ramming and watering and then disposing of all surplus excavated earth as directed with in all leads and lifts and to the entire satisfaction of the Engineer-in-charge.

Providing, laying, jointing and testing in trenches of MSERW bevelled edge flanged/butt welded pipes excluding cost of flanged bends of all degrees conforming to IS/ISO 3183-2007 Grade L290 or B as per dimensions weight and test pressure mentioned there in code ( mill Tolerances to be restricted with in 3%) a random length of 4m - 7m. The M.S. flanges are to be provided 1% of total joints as per table below conforming to IS: 6392-1971 (latest upto date amendments) 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 M.S. nut and bolts as per IS: 1369-1967 and compressed asbestos fiber jointing gaskets sheet not less than 3mm thick as per IS: 2712-1965 & remaining 99% butt welded joints by considering minimum three layers. The welding of flanges to be done on both faces in two layers on outer face + one layer on inner face to make the joints leak proof and to the entire satisfaction of the Engineer-in-charge. The laying of pipes should be conformed to IS: 5822-1994 (earth work in trenches, MS flanged and butt welded joint to be measured and paid for saparately) . The pipe shall have zinc coating inside and out side as per IS:4736 in factory permises latest with upto date ammendements.

Booster & Ist stage 400mm dia MSERW pipe Grade L-290 with wall thickness of 4.80mm