construction of r/wall at rd, 0/002 to 0/011, 1/330 to 1/345, 2/360 to 2/390, 3/045 to 3/090, construction of b/wall at rd 3/150 to 3/180, edge wall at rd 0/011 to 0024.70, construction of v-shape drain with edge wall at rd 3/045 to 0/090, u-shape drain at rd 2/290 to 2/390, p/l interlocking
