Tender For providing foundation concrete for structure & equipment plinth , supply and erection of lattice structures and other related civil works for 2 nos 230 kv bay extension and line swapping arrangements at vellalaviduthi 400 /230-110 kv ss for extension of 230 kv supply to thanjavur 230 kv ss and thiruvaruar 230 kv ss from from vellalaviduthi 400/230-110 kv ss.