Handrail Markings within interior exit stairways of high rise buildings are required by the following building and fire codes:
IBC/IFC 2009, 2012 section 1024.2.3
IBC/IFC 2015 section 1025.2.3
NYC LL 141 Section 1024.2.3
NYC LL26 RS 6.1 Section 2.2.3
NFPA 101 section 18.104.22.168.5.3
Handrails and handrail extensions shall be marked with a solid and continuous stripe having a minimum width of 1 inch (25mm). The stripe shall be placed on the top surface of the handrail for the entire length of the handrail, including extensions and newel post caps. Where handrails or handrail extensions bend or turn corners, the stripe shall not have a gap of more than 4 inches (102 mm).
Exception: The minimum width of 1 inch (25 mm) shall not apply to outlining stripes listed in accordance with UL 1994.