B2-Control of Stiffness Irregularity Between Adjacent Floors in the Building

B2, Stiffness Irregularity Between Adjacent Stories, Stiffness Irregularity Coefficient defined by dividing the average storey drift ratio at any i^th storey, excluding basements, by the average relative storey drift ratio in an upper or lower storey, for either of two perpendicular earthquake directions. This is when η_ki is more than 2.0.
η_ki = (Δ_i^(X)/h_i)_ort / (Δ_i+1^(X)/h_i+1)_ort > 2.0 veya
η_ki = (Δ_i^(X)/h_i)_ort / (Δ_i-1^(X)/h_i-1)_ort > 2.0

According to Table 3.6 , the calculation of the relative storey drifts is made according to the Equivalent Earthquake Load Method described in TBDY Section 4.7, taking into consideration (+)(-) 5% eccentricity effects. It is detailed in the earthquake regulation report.

If you want to check this report A1 - Building Torsional Irregularity Control section of the program, which is calculated from data obtained from the interface excel Δ_i,_mean you need to make additional accounts using excel value.

There is no B2 type irregularity in the building.