FLOOR DIAPHRAGMS.

quite satisfactory, because usually diaphragm flexibility affects neither overall structural stiffness (and hence natural period) nor the distribution of forces within a structure. Moreover, during a major earthquake, in ductile structures where the diaphragms are designed to remain essentially elastic, the superstructure

  Floor, Diaphragm, Affect, Earthquake, Flexibility, Floor diaphragms, Flexibility affects