providing pumping main with extenstion of pipe line at venkateswara nagar extension - ii in vikravandi town panchayat. , earth work excavation for pvc & hdpe pipe and depositing on bank with initiallead of 10 m and lift of 2 m in narrow trenches for layingof pipes for water supply and sewerage works in thefollowing type of soils as directed by departmentalofficers such as hard stiff clay, stiff black cotton, hard red earth, shales,murram gravel, stoney earth and earth mixed with smallsize boulders and hard gravelly soil.one cubicmetre excluding refilling pumping main - 140 mm hdpe pn8 , earth work excavation for pvc & hdpe pipe and depositing on bank with initiallead of 10 m and lift of 2 m in narrow trenches for layingof pipes for water supply and sewerage works in thefollowing type of soils as directed by departmentalofficers such as hard stiff clay, stiff black cotton, hard red earth, shales,murram gravel, stoney earth and earth mixed with smallsize boulders and hard gravelly soil.one cubicmetre excluding refilling pumping main -extension - 90 mm pvc 6ksc , supplying and delivery of pvc & hdpe pipe includind all cost of materials and other chrges etc complete complying with standard specifications pumping main - 140 mm hdpe pn8 , supplying and delivery of pvc & hdpe pipe includind all cost of materials and other chrges etc complete complying with standard specifications pumping main extension - 90 mm pvc 6ksc , lowering pvc & hdpe pipes and specials to trench and laying to proper grade and alignment, jointing with pvc couplers with cement paste- pumping main - 140 mm hdpe pn8 , lowering pvc & hdpe pipes and specials to trench and laying to proper grade and alignment, jointing with pvc couplers with cement paste- pumping mainextension - 90 mm pvc 6ksc , refilling with excavated soilincluding all labour chrges etc complete complying with standard specifications -pumping main - 140 mm hdpe pn8 , refilling with excavated soilincluding all labour chrges etc complete complying with standard specificationsextension - 90 mm pvc 6ksc , supplyand delivery of150 mm di teeincluding cost & conveyance of all labour chrges etc complete complying with standard specifications , supply and delivery of 150 mm dia di d/f gate (sluice) valves (soft seated) resilient seated soft sealing gate valves (sluice valves) with body bonnet of ductile cast iron of grade ggg 40 or ggg 50, wedge fully rubber lined with epdm replaceable spindle nut without gland packing and with 3 o- ring protection on the shaft and seals of nbr and the valves should be of vacuum tight and 100% leak proof with face to face dimensions as per bs 5163-89/isi 14846-2000/din 3202 f4. all the valves should be with electrostatic powder coating both inside and out side with pocket less straight through body passage. all the valves are to be compatible for buried application with pressure rating pn 10/16 and with 5 years warranty