When perform reponse spectra load case in X direction, there is always some forces in Y direction. Sometimes the forces in Y direction is pretty large or even close to force in X direction. Therefore the drift in Y direction is close to the drift in X direction.
So how to check the story...
When perform reponse spectra load case in X direction, there is always some forces in Y direction. Sometimes the forces in Y direction is pretty large or even close to force in X direction. Therefore the drift in Y direction is close to the drift in X direction.
So how to check the story...
According to 10.11.1 of ACI318-05, concrete shear wall should use 0.70Ig in the model. How to consider 70% reduction in Etabs? Reduce modulus of elasticity to 70% or set stiffness modifiers to 0.7.
Thanks.
When checking the drift of high rise building with concrete shear wall under wind, should the cracked section (ACI 318-05 10.11.1) be used? Are these cracked section factors for strength design only or for both drift check and stregnth check?
Thanks