running and maintenance of road leading from dollygunj road to dr. arun hospital.-2 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:4:8 (1 cement : 4 coarse sand (zone-iii) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources) 3 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level : 1:1½:3 (1 cement: 1½ coarse sand (zone-iii) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources) 4 centering and shuttering including strutting, propping etc. and removal of form work for :foundations, footings, bases of columns, etc. for mass concrete 5 providing and fixing on wall face unplasticised rigid pvc rain water pipes conforming to is : 13592 type a, including jointing with seal ring conforming to is : 5382, leaving 10 mm gap for thermal expansion, (i)single socketed pipes. 110 mm diameter