5.5 - Long single span propped composite Slabs

Following research into long single span propped composite slabs (i.e. locations where the slab is not continuous over supports at either end of the span, typically found in light gauge frame construction), design guidance was published by SCI/NHBC in New Steel Construction (October 2011). The guidance introduces more stringent span/depth ratios when long single span slabs require propping. When using SMD Elements® software, a guidance note will appear containing a link to the SCI/NHBC guidance where the input design criteria is appropriate.