tender for construction of 60000 ltr oht tank in sanaputhur colony in snaputhur panchayat in gummidipoondi panchayat union @ tiruvallur district , earth work excavation & depositing on bank with an initial lead of 10 metre & initial lift of 2 metre in hard shift clay, stiff block cotton, hard red earth shales, murrum, gravel, stoney earth, and earth mixed with small size boulders and hard gravelly soil (ss 20b) for foundation including shoring, strutting, baling out water providing danger light wherever necessary depositing the surplus earth on bank and other incedential charges etc., complete and as directed by twad board officers , for column footing , for foundation , sand filling for foundation with clear river sand including cost of sand, watering ,ramming and consolidation etc complete as directed by twad board officers , plain cement concrete 1:4:8 (one cement, four sand and eight hard granite broken stone of 40mm size iss gauge) for foundation and footing including mixing, placing, ramming ,finishing curing etc. complete in accordance with standard specification and as directed by the twad board officers. , reinforced cement concrete mix m30 grade using 10mm & 20mm hard blue granite broken stone (machine crushed) excluding the cost of rts rods for reinforcement and centering, strutting, shuttering but including cost of all materials mixing, laying, vibrating the concrete with mechanical vibrators, ramming, consolidating, finishing and curing etc., complete and as directed by the twad board officers. , for items 1.5m to 4.5m below gl , for items 0 to 1.50m below gl , for items 0m to 4.5m above gl &1.00 m above g.l , for items 4.50m to 7.32m above gl , for items 7.32m to 10.98m above gl , for items 10.98m to 14.64m above gl , for items above 14.64m & up to 18.30m from gl , supply and erection of steel centering, shuttering for soffits and sides including necessary supports and strutting for all reinforced cement concrete works using ms sheets of suitable size