Table of Contents
How deep is a standard stair tread?
10 to 11 Inches
Staircase Tread (Run) Depth: 10 to 11 Inches, Minimum However, if the steps do not have nosings, and the steps have solid risers, not open risers, the minimum tread depth is 11 inches. Staircase risers should be adequately deep to allow a majority of your foot to have enough room to rest on the stair.
What is code depth for stairs?
The tread depth code for residential stairs should be no less than 10 inches with nosing, no less than 11 inches without nosing, and maximum tread depth variation should also be less than 3/8 of an inch.
Does stair tread depth include nosing?
This is a measurement from the nose of the tread to nose of the tread. You are not required to have a nosing/overhang on your stair treads. But if your stairs don’t have a nosing you are required to have a tread that is at least 11 inches long.
Does tread depth include nosing?
What is the nose of stair tread?
Tread nosing The horizontal projection to the front of a tread where most foot traffic frequently occurs. The nosing is the protrusion beyond the riser when vertical risers are used, or beyond the back of the tread below, when angled risers or no risers are used. Anti-slip strips or nosings may be applied.
How thick should Wood be for steps?
Wood is the most common stair tread and must be at least one-inch thick on stairs supported by risers. Wood must be at least one-and-a-half inches thick when used with open risers. Building code states that stair treads must be thick enough to support a person going up or down the stairs.
How far does a stair nose stick out?
A nosing should not extend past the face of the riser below it less than 1/4 inch or more than 1-1/4 inch, according to the International Residential Code (IRC R311. 7.5.
Should stairs have an overhang?
Stairs must have an overhang between 3/4″ to 1-1/4” to increase the depth of the step, making it better for descent while maintaining a clear 10-inch going for the ascent. Treads that are 11-inches deep or greater do not require an overhang.
How thick should stair treads be?
Standard stair tread thickness is from 1” to 1 1/16”. There is no standard thickness for stairs that do not have a riser, which can range from ⅜” to 2” and more – it depends on the width of the riser. Stair treads without risers are typically thicker than treads with risers.