tender for providing functional house hold tap connection (175 nos) and extension of pipe line at therku thoppu, dharga thoppu in devipattinam pt , providing functional house hold tap connection (175 nos) and extension of pipe line at therku thoppu, dharga thoppu in devipattinam pt , earth work excavation and depositing on bank with an initial lead of 10m and initial lift of 2 m in narow trenches for pipe laying work including other incidental charges such as barricading etc in hard stiff clay,black cotton hard red earth,shales murram gravel stoney earth and earth mixed with small size boulders and hard gravelly soil as diected by twad board officers , supply and delivery of gi and pvc pipe and speical for potable water supply as per is specification no 4985/2000 and as amended from time to time with isi marking of the following sixes with necessary couplere or bell ended pipes as specified in isi with required quartity of solvent cement having the required working pressure and for delivery at site. , conveying the following pvc pipes and specials and lowering into trench laying to proper grade and alignment jointing with couplers and testing to the required pressure including conveyance of water upto 1.00 km lead for filling water for testing excluding cost of materials and as directed by the twad board officers , refilling with excavated earth complying with standard specification layers of 15cm watered well rammed and consolidated after the pipes and specials are laid jointed and testyed etc and removing and depositing the surplus earth at the places as shown by the twad board officers , supply and delivery of gi and pvc pipe special as per is specification with isi marking of the following sizes including all taxes, duties , loading , unloading and transit insurance charge etc and as directed by twad board officer. , 63mm pvc bend , 63mm pvc end cap , 63mm pvc tee , 50mm g.m gate valve , provision for functional house hold tap connection , providing for platform