Stair tread depth at winder/ landing

[Brandon Whitmore]

From what I can gather from the IRC '03, the min. tread depth of a winder should be 6". The tread depth at this stairwell landing/ step is 5" against the railing. Judging from this pic-- am I justified in calling this out a inadequate tread depth, or am I missing something?

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[randynavarro]

Not looking at my stair book right now, but if I recall, you have to measure the tread depth from the centerof the step.

IOW, if the stair is 36" wide, you measure the depth at 18" from the end of the step.

[charlie]

Where that winder tread meets the newel the minimum width is 6"-----I would say they missed by about 6"

[Brandon Whitmore]

Randy,

IRC says to measure 12" out I believe, but I also believe that the min. depth is 6" from what I am reading.

[Chad Fabry]

http://tinyurl.com/2ykt8e

[randynavarro]

Yup, that's the *book*.

Thanks, and I stand corrected.