Mode of failure under compression of a structural component that is thin (see shell structure ) or much longer than wide (e.g., post, column , leg bone).
Thomas Young of the {{link=elastic modulus">elastic modulus significantly propelled building construction science forward. The elastic theory formed the basis of structural analysis until World War II, when the behaviour of bomb-damaged buildings forced the modification of some of the theory's underlying assumptions. See also post-and-beam system .