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palmergregory3 03-19-2013 05:23 PM

Building a stairs with two 'runs', that is, there's a landing about 3/4 of the way up to the 2nd floor. I built the first set of stairs (12 steps) at 7 1/2" rise...which I now realize was a mistake. If I keep going with it, the rises for the 2nd run (4 more steps from landing to 2nd floor) will be only 7" a piece. I'm wondering if that will be a problem? Since it is a different run perhaps it will be ok? Any thoughts appreciated. (This is a new self-build construction house.) Thanks.

jagans 03-19-2013 05:47 PM

1/2 inch difference in rise is huge when it comes to steps. You really want the rise to all be the same. That is the most important thing. You can really take a header and get hurt badly otherwise.

woodworkbykirk 03-19-2013 07:31 PM

even with a landing the risers have to be within 1/8" to comply with most regions codes. the only time there can be a differnce that much is if its for stairs leading to different floors of the house.

a friend of mine is having a house built as we speak.. the contractor they hired to frame the house doesnt know how to cut stringers.. there wer variances up to 3/4" from one riser to the next.. they failed the framing inspection because of this and now require the stairs to be rebuilt

joecaption 03-19-2013 07:38 PM

May be time to bit the bullet on this one and hire a pro. Time and time again we've seen many a DIY stair case and so far they all needed to start over.

kwikfishron 03-19-2013 08:27 PM

199 Attachment(s)

Originally Posted by joecaption (Post 1141085)
May be time to bit the bullet on this one and hire a pro.

I don't see it like that in this case Joe...The guy just built his house and made a mistake on the stairs. Redo and move on.

Some of the most valuable lessons I've learned were from my own mistakes. $$$

A hundred bucks worth of 2x12, better math and less than a day and all's good.

A lesson learned.

ubcguy89 03-19-2013 09:30 PM

best advise I can tell you is adjust your landing layout to get the rise the same for both sets of stringers. remember the human body naturally adjusts to a set of stairs after just 3 steps.

palmergregory3 03-19-2013 11:02 PM

Thanks for the replies. The problem was that the basement stairs went too smoothly... I actually only cut one of the stringers for the main floor stairs, but it is a nice piece of 5/4 x 12 white oak. Ouch. It's a housed stringer so now I'm wondering if I could adjust the level and plumb cuts and still use it? I'll have to look into that.

joecaption 03-20-2013 08:09 AM

No way would I be using 5/4 anything for a stringer!
Needs to be 1-1/2.
On the outside stringers you are adding a 2 X 4 to the bottom of the stringer to space it out away from the wall for the apron and sheetrock, right?

GBrackins 03-20-2013 08:25 AM

I may stir up a hornet's nest, but have your discussed this with your building official. It all depends on your building code.

According to the 2009 International Residential Code a flight is defined as from one landing to another landing, not one floor to another floor. A quick call to your building department can answer your question per the one that makes the final determination.

Now if it were my place I'd redo the stairs. But then I have CDO.

ubcguy89 03-20-2013 09:55 PM

I would never use 5/4 for a stringer, and neither should you!

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