bids are invited for a. repair & maintenance of roads at mines - 2.5 cm premix carpet surfacing with 2.25 cum and 1.12 cum of stone chippings of 13.2 mm and 11.2 mm size respectively per 100 sqm and 52 kg and 56 kg of hot bitumen per cum of stone chippings of 13.2 mm and 11.2 mm size respectively, including a tack coat with hot straight run bitumen, including consolidation with road roller of 6 to 9 tonne capacity etc. complete (tack coat to be paid for seperately) with paving asphalt( bitumen will be issued free of cost by nalco from central store ). party to quote the unit price in coloumn i for one m2 and the quoted rate shall be inclusive of 18% gst , b. repair & maintenance of roads at mines - providing and applying tack coat using hot straight run bitumen, including heating the bitumen, spraying the bitumen , cleaning and preparing the existing road surface as per specifications : on bituminous surface @ 0.50 kg / sqm ( bitumen will be issued free of cost by nalco from central store ). party to quote the unit price in coloumn i for one m2 and the quoted rate shall be inclusive of 18% gst , c. repair & maintenance of roads at mines - providing and laying seal coat over prepared surface of road with bitumen heated in bitumen boiler spraying using 98 kg of bitumen and blinding surface with 0.90 cum of stone aggregate of 6.7 mm size (passing 11.2 mm sieve and retained on 2.36 mm sieve) per 100 sqm of road surface, including rolling and finishing with power road roller all complete.( bitumen will be issued free of cost by nalco from central store ). party to quote the unit price in coloumn i for one m2 and the quoted rate shall be inclusive of 18% gst , d. repair & maintenance of roads at mines - providing and laying bitumen penetration macadam with hard stone aggregate of quality, size and grading as specified, with bitumen of suitable penetration grade, including required key aggregate as specified, spreading coarse aggregateand applying bitumen and then spreadin