improvement of passage and drainage system at shrusti chawl , kamraj nagar in ghatkopar (e) beat no 133 n ward - 1 improvement of passage and drainage system 2 removing flooring. etc 3 excavation in earth 4 p/l 150 mm thick dry stone rubble soling 5 p/l m10 c.c .bedding 6 p/ls.w pipes 230 mm diameter 7 p/lupvcpipes 110 mm diameter 8 p/l 1:3:6 encasement 9 constructing brick masonry inspection chamber 10 extra over above for every additional metre depth 11 p/f rcc cover and ms frame 12 r/r g.i. pipes 13 p/f g.i. pipe 15mm 14 p/f g.i.pipe 20mm 15 p/l 1:3:6: c. c. beddingfor ladi 16 p/f rough shahabad ladi 17 p/l pavement cushioning of40 mm 18 pro.cementpointing shahabad stone