tender for repair and maintenance work on terrace floor for preventing leakage at revenue tower adoor - 56dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposalof rubbish to the dumping ground within 50 metres lead. 3 od110259/2024_2025providing and laying in position cement concrete of specified grade excluding the cost of centeringand shuttering - all work above floor v level 1:2:4 (1 cement : 2 coarse sand (zone-iii) : 4 graded stoneaggregate 20 mm nominal size) 4 13.9.1cement plaster 1:3 ( 1 cement : 3 coarse sand) finished with a floating coat of neat cement.12 mmcement plaster 5 13.21extra for providing and mixing water proofing material in cement plaster work in proportion recommendedby the manufacturers.