maintenance and repair of inspection house, chandpur - 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). as per dsr vol. 1 sr. no. 4.1.8. (including labour cess, royalty but excluding gst.) 2 brick work with common burnt clay f.p.s. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor v level in all shapes and sizes in cement mortar 1:4 (1 cement : 4 coarse sand). as per dsr vol. 1 sr. no. 6.4.1.(including labour cess, royalty but excluding gst.) 3 12 mm cement plaster of mix : 1:4 (1 cement: 4 coarse sand). as per dsr vol. 1 sr. no. 13.4.1. (including labour cess, royalty but excluding gst.) 4 cement concrete flooring 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate) finished with a floating coat of neat cement, including cement slurry, but excluding the cost of nosing of steps etc. complete. 40 mm thick with 20 mm nominal size stone aggregate. as per dsr vol. 1 sr. no. 11.3.1 (including labour cess, royalty but excluding gst.)