tender for earth work excavation for foundation by manual means for isolated, combined and other type foundations in all soils and sub-soils and to full depth as may be directed except in rock requiring blasting inclusive of shoring shuttering, bailing out water wherever necessary and depositing the surplus earth within the compound in places shown by the departmental of?cers with an initial lead of 10 mts and initial lift of 2.00mts. and clearing and levelling the site, etc., complete complying with standard speci?cation and as directed by the departmental of?cers. , cement concrete 1:5:10 (one cement, five crushed stone sand and ten hard broken stone jelly) using 40 mm gauge hard broken granite stone jelly for foundation including dewatering wherever necessary and laid in layers of not more than 15 cm thick well rammed, consolidated and including curing etc. complete complying with standard speci?cation and as directed by the departmental of?cers -mixing by mechanical means , 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, sill slabs 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 with silver oak joists of size 10cm x 5cm & 7.5cm x 5cm as support runner , vertical stiffener, side support and top horizontal stiffener spaced at about 60cm to 90cm centre to centre or at suitable intervals etc. complete in all ?oors complying with standard specifcation. (payment for centering shall be given after the concrete is laid). , supplying and erecting centering for plane surfaces such as reinforced cement concrete floor slab, roof slab, loft, landing slabs, etc with necessary supports and strutting upto 3.60m height in all ?oors with all cross bracings using ms sheets made of 10 gauge