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Provisions Not Implemented

Sway Effects

The program does not implement NBC 4.1.3.2.(12) regarding sway effects, that is, the effect of vertical loading acting on the structure in its displaced configuration.

Rotational Deflection - Seismic

The program does not consider the effect of rotation, that is, the deflection that is caused by the fact that walls on upper floors are rotated due to the deflection on the floor below. This deflection is outlined in CSA O86 A 11.7.1, Deflection in Multi-storey Buildings. We hope to implement this in a future version of the program

Sheds and Industrial Buildings - Wind

Sentence 4) of NBC 4.1.3.5 for wind design exempts industrial buildings and sheds. Shearwalls does not allow you to designate buildings as such to suppress the storey drift calculations, but you can suppress the output of the storey drift table and any warnings as described in Storey Drift.

See Also

Storey Drift Calculation