A nosing is not required where the tread depth is a minimum of 11 inches 279 mm.
Stair tread nosing code.
Ibc 1002 14a.
Beveling of nosings shall not exceed 0 5 inch 12 7 mm.
U progress dana policy stair treads international building code stair treads and risers doc 06 23 2014 1009 3 3 profile.
The leading edge of treads of stairs and of landings at the top of stairway flights.
To a maximum of 1 in.
This document provides building code specifications for stair treads.
Stair tread dimensions measaurements step construction details code specifications.
Nosings are required to overhang a minimum of in.
The section of the tread that overhangs the riser below.
Risers shall be solid and vertical or.
Handrail height to be placed a minimum 34 inches to 38 inches.
So since the minimum tread size is 10 a nosing will extend the tread depth to between 10 3 4 and 11 1 4.
Beveling of nosings shall not exceed 1 2 inch 12 7 mm.
The nosing on treads believe it or not has a code minimum and maximum of how far the nosing projects over the next stair.
Also the maximum nosing radius cannot exceed 9 16 of an inch.
For code requirements the minimum staircase width is the horizontal dimension between the sidewalls of a staircase measured above the handrail s.
The radius of curvature at the leading edge of the tread shall be not greater than 0 5 inch 12 7 mm.
Width refers to the length of risers and treads from side to side.
2008 new york state stair code r311 5 3 3.
Handrail graspability to be either type i or ii with a minimum 1 1 2 inch clearance from a wall.
A nosing is not required where the tread depth is a minimum of 11 inches 279 mm.
Sketches photographs and examples of defects used in inspecting the step design on indoor or outdoor stairs and their treads including the requirements for a projecting stair tread nose and the tread nose shape and dimensions.