tender for maintenance of drainage at ward 11 to15in r.s.mangalam town panchayat; 1 earth work excavation for foundation in hard stiff clay, stiff black cotton, hard red earth, shales murram, gravel, stoney earth and earth mixed with small size boulders ss.20b and sand, silt or other loose soil,wet sand or silt not under water, light black cotton soil, sandy loam ordinary soil and to full depth as may bedirectedexceptinhardrockrequiring blastinginclusive of shoring shuttering and baling out water and cleaning and levelling the site etc., complete - open earth work excavation 2 plain cement concrete 1:4:8 (one cement, four fine aggregates and eight coarse aggregates) using 40mm size iss hbg metal including cost and conveyance of all materials to site and labour charges and all incidential charges such as water providing etc., complete as per standard specification 3 supplying and erecting steel centering including necessary supports for plane surfaces for reinforced cement concrete works such as column footings, column pedestals, plinth beams, grade beams, staircase steps, etc. which require only nominal strutting using mild steel sheets of size 90cm x 60cm and 10 bg stiffened with welded mild steel angles of size 25mm x 25mm x 3 mm for boarding, laid over silver oakjoists of size 10cm x 6.5cm spaced at about 75cm centre to centre or at suitable intervals etc. complete in all floors complying with standard specifcation 4 plain cement concrete 1:2:4 (one cement two fine aggregates and four coarse aggregates) using 20mm size iss hbg metal including cost and conveyance of all materials to site and including for the mixing, laying and labour chargesetc., complete as per standard specification