Seismic forces are used as a representation for the displacement and movement that a structure would undergo during a seismic event. The seismic forces are directly related to the height, seismic weight and number of levels of the structure. Seismic weight is determined from the dead load of the structure consisting of framing members, decking, railing and equipment securely attached to the structure.
Concrete deck is viewed by consumers as having the most flexibility to adjust equipment locations, handle large point loads, and support heavy material handling equipment such as pallet jacks and light forklifts. This may be true, however, there are drawbacks to selecting a concrete deck over a roof deck, bar grating, or floor plate system.