Engineering Journal Article Downloads → Closure: Comparison of Design Specifications for the Design of Pipe and Round HSS Pedestrian Guardrail Systems
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The 2000 International Building Code does indeed allow for a one-third stress increase for guardrail systems designed using allowable stress design, however most other codes, particularly ASCE 7-98, the 1997 Standard Building Code and the 2001 Florida Building Code (a modification of the Standard Building Code) do not allow this stress increase. The one-third stress increase allowed by the 2000 IBC will most likely be removed from future editions of that code as it has from other codes, to make ASD designs equivalent to LRFD designs.