construction of r/wall at rd 5/150 to 5/170, 5/530 to 5/560, 6/300 to 6/310, 6/500 to 6/510, 7/215 to 7/245, 7/570 to 7/590, construction of v-shape drain with edge wall at rd 6/050 to 6/450, 7/300 to 7/800, 8/000 to 8/500, 8/700 to 9/00 and construction
