Diaphragm Flexibility in Buildings with Shear Walls

Reinforced concrete buildings are typically analyzed and designed on the assumption that floor serve as rigid diaphragm spanning between vertical resisting elements. Such assumption is correct for most of the buildings, but for some buildings having more aspect ratio (or longer in plan), thin floors with openings can exhibit significant in lane flexibility in their behavior. So it is of at most important to study the influence of these factors on flexibility of diaphragm. In this paper the influence of factors (i.e. aspect ratio and number of stories) on flexibility of diaphragm has been discussed using finite element based software ETABS