tender for construction of gsb granular sub base by providing well graded material spreding in uniform layers with mortar grader on prepared surface comp , providing and applying tack coat with bitumen (vg-10) using bitumen pressure distributor at the rate of 0.30kg per sqm as phalt before b.m. & s.d.c. layer etc all comp , dense graded bituminus macdam (dgbm) etc all comp , providing and applying bituminous concrete (bc) 25 mm thick (average) with computrised hmp type hot mix plant producing an average output of 75 tonnes per hour crushed aggregates of specified grading permixed with bitumenour binder (crmb) @ 5.4 per cent of mix and filler transporting the mix with paver finisher etc all comp , add 18% gst