Partly as a result of the latter incident, counterflow has recently received particular attention in some US standards and building code-change deliberations that led to a minor increase—from 1120 mm to 1422 mm (44 in. to 56 in.) in minimum, nominal exit stair width requirements for certain...
IBC Section 1011.2 Headroom states that the minimum clearance of 80 inches shall be maintained the full width of the stairway and the landing. The OSHA stair landing clearance code is not explicitly stated in the code, but can be interpreted to be the same 80 inches as for a stairway ...
building code is 1.12m.doi:10.1007/s10694-018-0741-zHagwood, CNISTReneke, P. ANISTPeacock, R. DNISTKuligowski, E. DNISTFire TechnologyHagwood C, Reneke PA, Peacock RD, Kuligowski ED (2019) Incorporating human interaction into stair egress with an application to minimum stair width. Fire ...