2012 International Building Code IBC
A new project built to 2012 International Building Code IBC Section 1009 Stairways 1009.4 Width. The width of stairways shall be determined as specified in section 1005.1, but such width shall not be less than 44 inches (1118mm). see section 1007.3 for accessible means of egress stairways. Exceptions: Stairways serving an occupant load of less than 50 shall have a width of not less than 36 inches (914 mm). Solid risers are not required for stairways that are not required to comply with...