construction of 1410 tenements using pre-fabricated concrete technology on lump-sum turnkey design & build basis including all services such as internal and external water supply, sanitary, electrification and development works at i ) periyar nagarscheme ( 448 tenements plus 8 du’s for electrical room ) ( ground + 5 storied ) in greater chennai corporation division no. 73, zone – vi, ii ) navalar nedunchezhiyan nagar and chindadripet scheme ( 450 tenements ) ( ground + 5 storied ) in greater chennai corporation division no. 62, zone - vandiii ) b.r.n garden scheme ( 501 plus three refuge area tenements ) ( stilt+ 9 storied ) in greater chennai corporation division no. 59, zone - v