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Old 11-05-2012, 02:52 PM   #1
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Unnotched stringer??


What is unnotched stringer stairs, how are they constructed? are they better than the other way?

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Old 11-05-2012, 03:59 PM   #2
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Unnotched stringer??


They are usually an uncut 2X10 or 2X12 with cleats nailed or screwed to the side and treads mounted to the cleats. I think there is a thing called Ez Stairs or something like that made for this type situation but not sure. Sorry not much help with this type set up.

They are for sure not as good as the notched stringer stairs IMHO.

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Old 11-05-2012, 04:06 PM   #3
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Unnotched stringer??


just like Big Jim said ..... here's metal connectors made by Simpson Strong-Tie http://www.strongtie.com/products/connectors/LSC.asp
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Old 11-05-2012, 04:29 PM   #4
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Unnotched stringer??


There's lots of other things you could also be talking about.
You can buy prefab stairways that do not use notched stringers for one,
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Old 11-05-2012, 04:44 PM   #5
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Unnotched stringer??


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They are usually an uncut 2X10 or 2X12 with cleats nailed or screwed to the side and treads mounted to the cleats. I think there is a thing called Ez Stairs or something like that made for this type situation but not sure. Sorry not much help with this type set up.

They are for sure not as good as the notched stringer stairs IMHO.
Absolutely not true Jim. There are many instances where unnotched (closed) stringers are almost always used. Basements and exterior are a few. This is done to save cost, but they still must be built securely. I have seen many attempts at notched steps that were done incorrectly or poorly as well. Notching the stringers weakens them and support needs to be added for longer ones. Closed stringers can support themselves over longer distances without added support.
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Old 11-05-2012, 04:59 PM   #6
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Unnotched stringer??


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Absolutely not true Jim. There are many instances where unnotched (closed) stringers are almost always used. Basements and exterior are a few. This is done to save cost, but they still must be built securely. I have seen many attempts at notched steps that were done incorrectly or poorly as well. Notching the stringers weakens them and support needs to be added for longer ones. Closed stringers can support themselves over longer distances without added support.
Let me rephrase that, I should have said, all the stairs I have built I never have built one in that fashion. To me the stairs would be dependent on the shear strength of the fasteners, I personally would not feel comfortable using that type of stairs with a very heavy load.

Closed stringers are a different story, they are notched or mortised and are not dependent on a cleat or metal bracket. In my other post I was referring to a cleat type stringer not a closed or full mortise stringer.
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Old 11-05-2012, 09:46 PM   #7
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Unnotched stringer??


Fig. 28, 29 and Table 6: http://www.awc.org/Publications/DCA/DCA6/DCA6-09.pdf

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Old 11-06-2012, 12:38 AM   #8
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Unnotched stringer??


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...To me the stairs would be dependent on the shear strength of the fasteners, I personally would not feel comfortable using that type of stairs with a very heavy load...
Have you ever used joist hangers for a flush Beam? Can be a greater load on a joist then on a stair step.

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