repair of road gullies and other allied items at i t park u t chandigarh--1 providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level :4.1 1.01 1:2:4 (1 cement : 2 coarse sand (zone-iii) derived from natural sources: 4 graded stone aggregate 20 mm nominal size derived from natural sources).4.1.3 1.02 1:5:10 (1 cement : 5 coarse sand (zone-iii) derived from natural sources: 10 graded stone aggregate 40 mm nominal size derived from natural sources).4.1.10 2 brick work with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 in foundation and plinth in:6.1 2.01 cement mortar 1:4 (1 cement : 4 coarse sand)6.1.1 3 12 mm cement plaster finished with a floating coat of neat cement ofmix :13.7 3.01 1:4 (1 cement: 4 fine sand)13.7.2