What is a Depth-Damage Function (DDF)?
A DDF is an estimation of physical damage to a building based on a depth of flooding calculated as the percent damage to the structure and the contents. DDFs for displacement and loss of function at various flood depths are also estimated, but given in number of days. DDFs have been selected for various occupancy classes and are incorporated into the damage function library housed within the Version 4.5.5 Benefit-Cost Analysis (BCA) software.
