b) 1/2" (13 mm) thick"Cement plaster 1:4 upto 20' (6.00 m) height:- b) 1/2""(13 mm) thick""Cement pointing struck joints, on walls, upto 20'(6.00 m) hiehgt:- (external wall) a) ratio 1:2""13/8""(35 mm) thick mosaic flooring, consisting of 3/8""(10 mm) mosaic topping of one part of cement and marble powder in the ratio of 3:1 and two parts of marble chips, laid over 1""(25 mm) thick flooring of 1:2:4 cement concrete including rubbing and polishing camplete:- (a) using grey cement"