This research aims at developing a new simple but rational analytical model to predict web crippling
strength of cold formed steel Z beams. Results of the developed analytical model were verified experimentally
and numerically utilizing the finite element non-linear analysis. Web crippling strengths obtained
by the proposed analytical model, tests and numerical analysis were compared to the
corresponding strength calculated by the equations of AISI-2016 and Eurocode 1e3. Both codes adopt
empirical equations for estimating the web crippling resistance.
Comparison showed that, the predicted web crippling strength using the developed model compare
well with the experimentally and numerically calculated strength. On the other hand, it was found that
the design equations adopted by the AISI-2016 and Eurocode 1e3 overestimate the web crippling
strength compared to the experimental and analytical strength. Accordingly, it is recommended to adopt
the proposed equation as a rational formula for estimating web crippling strength of cold formed Zsections.
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