tender for dismantling the existing damaged plain cement concrete portion clearing away and carefully taking material useful for reuse for any thickness of concrete including all cost etc. as per standard specification. , earth work excavation for foundation and depositing on bank with in the initial lead of 10m and a lift of 2m in hard stiff clay, stiff block cotton, hard red earth, shales, murram, gravel, stoney earth and earth mixed with small size boulders etc complete complying with ss20b. tndss no:23&24 , cement concrete of mix 1:4:8 (one part of cement four part of sand and eight part of aggregates) using 40 mm gauge machine broken granite stone jelly for foundation including de watering if found necessary and laid in layers of not more than 15 cm thick well rammed and consolidated etc complying with standard specification. tndss no:28 , supplying and erecting centering to sides and soffits including supports and strutting with necessary centering for soffits upto 3 meter height using mild steel sheet of size 90 cm x 60 cm x 10 mm gauge with ms angles of size 25mm x 25mm x 3mm laid over silver oak (cw) joists of size 10cm x 6cm spaced upto 90cm c/c and casurina props or 10 cm to 13 cm dia spaced at 0.750 cm c/c complying with standard specifications as per tndss no : 30 & 86. , cement concrete 1:2:4 (one part of cement two part of sand and four part of aggregates) using machine broken granite jelly of 20 mm size for all cement concrete works excluding cost of centering shuttering strutting and also cost of reinforcement grill in position but including laying vibrating with mechanical vibrators using finishing etc complete, as directed by the departmental officers etc complete complying with standard specification. tndss no:30 , providing and laying, spreading and compacting graded stone aggregates to wet mix macadam of required thick specification including premixing the materials with water at omc in mechanical mix plant carriage of mixed material by tipper