P-delta does not need to be considered when the stability coefficient (>θ) determined by the equation below is equal to or less than 0.10.
Px |
Total vertical design load at and above level x per Sect. 12.8.6.1 (all load factors equal to or less than 1.0) |
Vx/Δse |
Story stiffness at level x, calculated as the seismic design shear, Vx, divided by the corresponding elastic story drift, Δe |
hsx |
Story height below level x |