This code is based on structural safety of buildings: Masonary Walls.
An assemblage of masonary units properly bonded together with mortar.
- Design by calculated masonary method
The thickness of masonary for different spans, storey heights and openings given by Nomograms are worked out for three occupancies as given below:
| S.NO. | OCCUPANCY | LIVE LOADING |
| a) | Residential buildings | 200 kg/m2 |
| b) | Office buildings | 300 kg/m2 |
| c) | Office buildings | 400 kg/m2 |
The Nomograms for thickness of brick wall consist of nine vertical lines. From left to right, the vertical lines represent:
- Basic stress: of Masonry depends on the crushing strength of masonry unit and mortar used.
- Storeys: In case of multi- storeyed buildings, the wall thickness at each floor is found by passing the line through the no. of storey above that section.
- Reference line 1: It fixes a point on the line for any combination of values for Basic stress and storey.
- Span point: Fourth line has a span point, through which all lines shall pass through for arriving at the thickness.
- Reference line 2: It fixes a point on the line for any combination of values for Basic stress and Storeys.
- Percentage of openings and thickness of walls for spans of 3m, 3.6m & 4.2m: The openings provided on the walls for windows, ventilators, doors etc are taken care of in the nomograms by this line.
