tender for providing drainage at sagothar street in ward no:23; 1 providing drainage 2 centering for soffits of rcc slabs of plane surface like lintels, beams ,etc.,including strutting 3m high using mild steel sheets of size 90cm x60cm x and b.g 10 stiffened with m.s angles of size 25mm x 25mm x 3mm laid over silver oak (c.w) joists of size 10cm x 6.5cm (spaced at about 90cm c/c )and supported dy casurina props of 10cm to 13cm dia (spaced of 75cm c/c) complying with standard specification and directed - 10 m 2 (p & d)data 38 3 laying plain cement concrete 1:2:4 (one cement,two sand and four aggregates) using 20mm iss hard broken granite stone jelly for plain cement concreteworks excluding cost of shuttering, and centering including all labour charges and incidental charges for cost and conveyance of all materials to work site, mixing and laying concrete finishing the surface nearly rough, compacting using vibrators, curing etc, complete complying with standard specification.(tnbp no.28)