tender for repair / maintenance of di / gi / ppr pipe lines and connected items at karu zone-i under ge 860 ews. - excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth for laying of gi tubing in trenches and getting out all in hard and dense soil complete all as specified by engineer- in - charge. returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick complete all as specified and directed by engineer-in-charge. removing excavated material (soil) to a distance not exceeding 50 mtrs and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified by engineer- in - charge. taking up or down old unserviceable di/gi tubing connection including disconnection of fittings from tubing where required and cleaning for refixing or removal from site complete all as specified by engineer- in - charge of following sizes :-