tender for supply and laying of gi electroforged gratings over drain- 1 demolishing cement concrete (nominal / leaner mix)manually/ by mechanical means including disposal of material within 250m lead as per direction of engineer - in - charge. 2 dismantling steel work in built up sections in angles, tees, flats, pipes, tubes and channels including all gusset plates, bolts, nuts, cutting rivets, welding etc. including dismembering and stacking within 250metres lead as per direction of engineer-in-charge. 3 plain cement concrete 1:2:4 using 20mm down graded hard granite broken stones including cost and conveyance of all materials, labour for mixing, laying, consolidating curing etc.complete, including cost of cement ,all as directed by the engineer-in-charge. 4 plastering with cm 1:4, 12mm thick floated hardand trowelled smooth for walls including watering, curing, staging/scaffolding, cost and conveyance of all materials and labour charges, handling, unloading, finishing, including cost of cement ,all as directed by the engineer-in-charge. 5 supplying and laying in position electroforged gi grating serrated of following sizes as per the attached drawing having frame / bearing bars of size 25x5 mm ms flat bar serrated and cross bars size of 8mmtwisted rod, grating pitch 40mm x100mm and hot dip galvanising thickness should be minimum 85 microns, the rate shall include cost and conveyance of all materials, labour, fabrication, galvanisation, laying other incidentals etc. complete.a) span 1200 x width 605 mm - 130 nosb) span 605 x width 1000 mm - 190 nosc) span 605 x width 500 mm - 20 nos 6 supplying and fixing of rectro reflective sign board using super high efficiency sticker fixing white colour bonded on 2mm aluminium sheet including art work was per the direction of engineer-in-charge. the board shall be mounted on the existing concrete surface using self tapping screws. the rate shall include costs and conveyance of all materials, labour, fabrication, laying other incidentals etc. complete.