External Walls

Permissible Areas for Infill Blocks in External Walls.
Permissible infill Masonry Area in m2 above ground
e = h/l or l/h 1 >=2 1 >=2 1 >=2
Wall Thickness
cm		 Building Height
Zero to 8m 8m to 20m 20m to 100m
15 17 12 11 8 8 5
20 30 21 19 13 13 10
25 37 26 24 17 17 13

e is the value of the larger to the smaller side of the infill area. For side ratios 1.0 < e < 2.0 the permissible max. values of the infill area should be linearly interpolated.

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