Multiply the actual length on the drawing (the length can be found on the detail drawing) by the theoretical weight per meter of the corner bracing (corner bracing is generally made of angle steel, and its theoretical weight per meter can be found in a hardware handbook).
Corner bracing should be designed as an axially compressed member. The axial force N can be calculated using the following formula:
N=A*f*(fy/235)^0.5/(60*cosθ)
When the corner bracing is symmetrically arranged, the calculated axial force of each corner bracing can be half of the value calculated by the above formula. Corner bracing should preferably be made of single angle steel.
