The Iron Shop’s Code Stair Packages will address and meet compliancy with each of
the requirements that are listed below. This information will apply to the BOCA
Code, UBC Code, IRC 2003, IRC 2006, IBC2006, and IFC 2006 codes.
see our detailed Blueprint/Standard Plan for more information.
IRC 2006 Stair Building Code
R3188.8.131.52 Spiral Stairs. Spiral stairways are permitted, provided the minimum width
shall be 26 inches (660 mm) with each tread having a 7 1⁄2 inch (190 mm) minimum
tread depth a 12 inches from the narrower edge. All treads shall be identical, and
the rise shall be no more than 9 1⁄2 inches (241 mm). A minimum headroom of 6 feet,
6 inches (1982 mm) shall be provided (See diagram below).
The Iron Shop's standard spiral package does not address the open space between
each tread (open rise stair). *If your code, IRC 2003, IRC 2006 or IFC 2006 requires
not more than a 4" space in this area, you will need to order our riser bars, Lip-up
design treads, or riser plates.
Please check with your local building department/code enforcement office for the
exact requirements for your municipality.
The Iron Shop, Cohen Brothers, Cohen Iron Works, We Suggest You Take The Stairs, Take The Stairs, We Recommend Taking The Stairs. All Rights Reserved.