Fix (line dori) in a slope 1:150, starting from the lowest point of rainwater down-take and by keeping a minimum thickness of 65 mm (2x1”/2), below the rainwater outlet.
Fix brickbats in cement-mortar layer of 1:6 proportion in a slope of 1:150 with the waterproofing compound.
Fill the cement-mortar 1:4 with water-proofing compound in the brickbat joints.
If the work is incomplete at end of the day and joint is required for the next day’s work, provide brickbats in staggered manner and avoid continuous horizontal joint of the mortar.
Fix small pieces of brickbats along with 20 mm (3/4”) metal for coving of watta (rounding) at the bottom of the parapet wall.
Special care should be taken for achieving the round shape near the rainwater pipe.
Block the rainwater outlet with gunny bags, to avoid cement slurry from entering in.
Cure the brickbat coba coat for at least seven days.
Brickbat Coba For Terrace
