tender for w-21 maintenance and supply work; exvation work with 05km extra lead cement concrete grade m-10 (nominal mix) with 40 mm maximum size of stone aggregate-providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering all work up to plinth level foundations, footings, bases of columns, etc. for mass concrete centering and shuttering including strutting, propping stretchin g etc. complete for and removal of form work by sheet plate or ply wood shuttering for: cement concrete grade m-20 (nominal mix) with 20 mm maximum size of stone aggregate-providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering all work up to plinth level providing and laying cement concrete grade m-20 (nominal mix 1:1.5:3) with 20 mm graded crushed stone aggregate, mixing shall be in mechanical mixer, laying with paver compacting by use of pin, plate/screed vibrators including form work by strong steel girders fixed by spikes, separation membrane 125 micron thick, i/c cutting of joints @ 4 to 5 m interval & filling it with hot applied bitum inous sealant (without dowel bars) (max. thickness 20cmy .... more in document