tender for attending cement concrete patch work at railady road and throubathiamman koil street.; 1 centering for soffits of rcc and pcc slabs of plane surface like lintels, beams, etc., including strutting 3m high using mild steel sheets of size 90cm x 60cm x and bg 10 stiffened with ms angles of size 25mm x 25mm x 3mm laid over silver oak joists of size 10cm x 6.5 cm spaced at about 90 cm c/c and supported by consurina props of 10 cm to 13cm dia spaced of 75cm c/c complying with standard specifications and as directed by the departmentsl officers etc., complete 2 cement concrete 1:2:4 (one cement, two fine aggregate and four course aggregate) mix using 20mm hbg iss metal from approved quarry including cost and conveyance of all materials to site and labour charges, including dewatering if found necessary and laid in layers of not more than 15cm thick and compacted etc., complete complying with standard specifications as directed by the departmental officers