Curtain Beam Strip Analysis

A beam strip model based on an Euler-Bernoulli elastica solution is implemented in a freely available wind analysis computer program for metal building vehicular access doors to calculate door jamb forces and curtain deflections considering jamb and framing flexibility. The software is provided to support analysis-based vehicular access door design for metal buildings. Existing access door curtain and jamb design approaches are viable for rigid door jambs. However it was shown with experiments that wind-lock forces decrease and door out-of-plane deflection increases when the door jamb and framing are more flexible, for example, in the case of typical cold-formed steel framing details where a C-section jamb is discretely braced by wall girts.