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11.04.2024

Coefficient de stabilité

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.

θ = PxhsxVxse

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)

Vxse

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