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Step Riser Height

 
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Old 04-15-2016, 09:43 PM   #61
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Re: Step Riser Height


Oops here it is
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Old 04-15-2016, 09:54 PM   #62
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Re: Step Riser Height


Quote:
Originally Posted by carpentaro View Post
Total run+rise should ~17-18", hence the 7/11 starting point.
Minimum IIRC is 4-3/8", anything over that is a "legal" step, may not walk right, but is legal. Not sure what the tallest legal step is, but I wouldn't go anywhere over 8-1/2". No more than 3/8" variance in a flight.
The customer is always right, and it is only a few steps.
And according to the IRC anything over 7-3/4" is an illegal step.
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Old 04-15-2016, 10:02 PM   #63
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Re: Step Riser Height


Optimal and what feels right, and what's legal are two different things.
The 7-3/4 MAX sounds short, but that may just be Cali code?
8-1/2 sounds tall and would probably feel funny walking [so, not optimal] but when you look at the difference from optimal [7"] to minimum the difference is ~3".
The difference from optimal to tallest difference is only 1-1/2".
Things may have changed or I'm not remembering it right [forgot more than some will know].

Last edited by carpentaro; 04-15-2016 at 10:05 PM.
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Old 04-15-2016, 10:59 PM   #64
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Re: Step Riser Height


Funny, the more things change, they stay the same.

I was helping an apprentice [yes in Australasia there are still official non-union apprentice programs] get his last few sections done [he wanted to jump the ditch] with only a few things to finish his program, which I talked him out of until he finished.
The last two sections were roofs and stairs. We were building an addition, so roofs were done. Stairs? We made a temporary set of stairs [so there wasn't that BIG STEP off the deck to the ground outside. We measured the rise and the run was anything we wanted [no limitations]. He took one jack [horse, riser, stringer...] home and laid it out and I took the other. The metric equivalent was bang on 7/11 [180mm/280mm].
When stairs were designed to fit people, they work in both metric and ' and ".
I'm not sure what the max/min in metric stairs is.
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Old 04-15-2016, 11:06 PM   #65
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Re: Step Riser Height


Quote:
Originally Posted by carpentaro View Post
Optimal and what feels right, and what's legal are two different things.
The 7-3/4 MAX sounds short, but that may just be Cali code?
8-1/2 sounds tall and would probably feel funny walking [so, not optimal] but when you look at the difference from optimal [7"] to minimum the difference is ~3".
The difference from optimal to tallest difference is only 1-1/2".
Things may have changed or I'm not remembering it right [forgot more than some will know].
From the IRC (not just the Cali code) . R311.7.5.1

SAYS 7-3/4" Is max.
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Old 04-16-2016, 07:34 PM   #66
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Re: Step Riser Height


The older UBC allowed up to 8" for single family [which still seems too steep].
The only time you'd look those up [for max/min limits] is if there was a tricky situation that might push compliance.
Usually you'd go down and add a step to keep it between 6-7".

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