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john in la Tractor Guru
Joined: 28 Mar 2004 Posts: 10511 Location: Bedico, La.
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Posted: Sat Oct 13, 2012 3:05 pm Post subject: Stair Stringer Rise |
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What is a biggest acceptable rise for steps.
3 steps high
Using 2x10s for steps so run will be....
Top step even with deck will be 18.5 inches
Middle and bottom step will be 9.25 inches
Total height is 21 inches but what I want to know is 7 inches the maximum acceptable rise or can I make a short ground to bottom step and use 8 inch rise between steps. |
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omahagreg Tractor Expert
Joined: 02 Jan 2007 Posts: 2001
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Posted: Sat Oct 13, 2012 3:08 pm Post subject: Re: Stair Stringer Rise |
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11" on run, 7" MAX on rise. If these are outside, I would use 2-2x6s for the tread, so rain can drain. A solid board usually will cup from water. |
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dave2 Guest
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Posted: Sat Oct 13, 2012 3:10 pm Post subject: Re: Stair Stringer Rise |
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Keep in mind.... you ain't gettin any younger..... I'd keep em shallow and not as steep for them sore/stiff knees and hips that are around the corner..... |
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Bill in IL Tractor Expert
Joined: 24 Jul 2007 Posts: 1591 Location: Hanna city, il
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Posted: Sat Oct 13, 2012 3:13 pm Post subject: Re: Stair Stringer Rise |
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Cant speak to code but somewhere 7-8 inches is what you want. 8 inches is a little steep, 7 is a little low. I would avoid the short step and go 7 inches as will be unnatural to climb a short then long steps. |
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Scott 730 Long Time User
Joined: 27 Nov 2002 Posts: 879 Location: EC MN
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Posted: Sat Oct 13, 2012 3:24 pm Post subject: Re: Stair Stringer Rise |
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Keep the risers all equal or you will create a tripping hazard. Code only allows 3/8" difference in a run of stairs. |
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FBH44 Tractor Guru
Joined: 08 May 2011 Posts: 3917
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Posted: Sat Oct 13, 2012 3:29 pm Post subject: Re: Stair Stringer Rise |
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The ICC Code for residential allows risers to range from 4" tall up to 7 3/4" tall. Risers and treads must be within 3/8" of adjacent risers / treads, so there's no tipping hazard. Supposed to have at least one handrail, too. |
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Jason the Red Long Time User
Joined: 12 May 2009 Posts: 796 Location: Grain Valley MO
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Posted: Sat Oct 13, 2012 4:05 pm Post subject: Re: Stair Stringer Rise |
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Code only allows 1/4" on riser difference. It also allows 1/2" on tread depth. |
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brandon j Regular
Joined: 27 Nov 2011 Posts: 180
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Posted: Sat Oct 13, 2012 4:13 pm Post subject: Re: Stair Stringer Rise |
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I am a carpenter and you can have a max of 3/16 diffrence in rise not 3/8 max of 7 in. in comeral and 8 in. in residancal if you need help my email is open |
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Vito Tractor Guru
Joined: 17 Aug 2004 Posts: 6597
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Posted: Sat Oct 13, 2012 4:27 pm Post subject: Re: Stair Stringer Rise |
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If you have 21" height you need 3 risers @ 7" with a total of 2 treads.Why have one even with the top of the deck?
Vito |
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batractorman Regular
Joined: 26 Jan 2012 Posts: 35
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Posted: Sat Oct 13, 2012 4:28 pm Post subject: Re: Stair Stringer Rise |
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NC says Rise + Run should = 18" or 18 1/2"
If you use 7" rise with 9 1/4" treads, you should be right on the money. Might be asking for unwanted trips with first step higher. |
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David G Tractor Guru
Joined: 11 Jan 2008 Posts: 20176
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Posted: Sat Oct 13, 2012 4:52 pm Post subject: Re: Stair Stringer Rise |
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If you have the run, add a step and even them out between 6 and 7 inches. |
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paul Tractor Guru
Joined: 25 Dec 1997 Posts: 24144
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Posted: Sat Oct 13, 2012 5:03 pm Post subject: Re: Stair Stringer Rise |
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Make them all the same, whatever you do. 3 short steps is fine. If you make 2 tall steps I could live with that, probably not to code.
I would curse the one 'short step' every time I used them if done that way...... Not good.
--->Paul |
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blunosr Regular
Joined: 10 Sep 2009 Posts: 301 Location: Nova Scotia
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Posted: Sat Oct 13, 2012 5:15 pm Post subject: Re: Stair Stringer Rise |
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Yup, make 'em all the same height (rise). My recollection says the magic number is 66. Rise x run, in inches, should equal 66. I always try to use as close as possible to 7 1/4" rise, and 9" run. Anything greater than 7 1/2" rise will feel steep. Also, be sure to put your step boards on so they will bow downwards (not cup upwards). It seems counter-intuitive, but the heartwood should be at the upper side of the tread. They cup opposite the growth rings. That's because the rings shrink the same amount laterally, and you have a much longer ring on the outside of the tree, so it shrinks more.
I seem to recall that 66 is also the height, in inches, from the closest tread to any overhead obstruction.
Good luck with them, stair building is the mark of a true carpenter.
Troy |
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john in la Tractor Guru
Joined: 28 Mar 2004 Posts: 10511 Location: Bedico, La.
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Posted: Sat Oct 13, 2012 9:10 pm Post subject: Re: Stair Stringer Rise |
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Why have one even with the top of the deck?
Because it allows me to attach the stringer to the face of the rim joist rather than under the porch. I feel it is stronger that way. |
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john in la Tractor Guru
Joined: 28 Mar 2004 Posts: 10511 Location: Bedico, La.
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Posted: Sat Oct 13, 2012 9:12 pm Post subject: Re: Stair Stringer Rise |
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Thanks for the advise guys. |
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