Structural Analysis and Design - P-delta effects, Second-order Analyses & Notional Horizontal Loads

This video gives an introduction on how to account for various imperfections in real structures. P-delta effects (both due to deformation and imperfections), second-order analyses and notional horizontal loads are discussed.
Copyright Stellenbosch University.

[@amrabdullah1995]

hello, thank you for sharing the experience. could you please explain the concept of direct analysis method ? since it has also notional loads.

[@mariomurillo4056]

HI, thank you for the video, it's very informative. I have question, when analyzing pdelta, what load combination do you use for the delta displacement? just the horizontal force? or do you consider the gravity load (Dead + Lateral Load)? Additionally, when analyzing story drifts for seismic and wind, what load combination should be used? (Only Lateral Load? Or gravity load + lateral load?