Stair Treads

[Jerry Simon]

What's a *safe* stair tread width, or what does the IRC say about such. Thanks so much. Found some today I know are too narrow (7").

[homnspector]

R311.5.3.2 Tread depth. The minimum tread depth

shall be 10 inches (254 mm). The tread depth shall be

measured horizontally between the vertical planes of the

foremost projection of adjacent treads and at a right angle

to the tread’s leading edge. The greatest tread depth

within any flight of stairs shall not exceed the smallest by

more than 3/8 inch (9.5 mm). Winder treads shall have a

minimum tread depth of 10 inches (254 mm) measured

as above at a point 12 inches (305) mm from the side

where the treads are narrower.Winder treads shall have a

minimum tread depth of 6 inches (152 mm) at any point.

Within any flight of stairs, the greatest winder tread

depth at the 12 inch (305 mm) walk line shall not exceed

the smallest by more than 3/8 inch (9.5 mm).

[Chad Fabry]

http://www.stairways.org/pdf/2006%20Sta ... SCREEN.pdf

[Jerry Simon]

You guys be great...thanks.

[Jim Baird]

State of GA, by amendment, allows 9".

[homnspector]

Georgians have little feet, or is that Little Feat?

[Darren]

Jim,

Interesting GA allows 9 inches; so does NJ. Our riser height is 8 1/4 inches, what's GA?

Of course this is residential only; IBC is 7 & 11.

Darren

www.aboutthehouseinspections.com

[Bob White]

Originally posted by Darren

Jim,

Interesting GA allows 9 inches; so does NJ. Our riser height is 8 1/4 inches, what's GA?

Of course this is residential only; IBC is 7 & 11.

Darren

www.aboutthehouseinspections.com

Max riser height is 7 3/4" in GA