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Ceiling joists with no Structural Ridge

Kamil972

Hello,

I have one floor single family house with 2x10 ridge board, the height of the exterior walls is 6-8” can I put ceiling joists at 1/3 of the height ( from the top of the wall to the bottom of the ridge board)

Please advise 

 
Feb 15, 18 6:39 pm

"Joists" are horizontal members and as such would not have a ridge.

Feb 15, 18 6:58 pm  · 
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Non Sequitur

Comments like this is why I stick around.

Feb 15, 18 7:47 pm  · 
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Kamil972

By code if you have structural Ridge, you don’t need ceiling joists but if we have ridge board we need ceiling joists, there is one section in the code saying that we can place ceiling joists up to 1/3 of the height 




Just want to check with someone about the code 

Feb 15, 18 7:08 pm  · 
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proto

perhaps you could consult an architect near you?

Feb 15, 18 7:27 pm  · 
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Non Sequitur

Consulting starts at $250/hr. For you, make that $500/hr as a precaution.

Feb 15, 18 7:46 pm  · 
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Kamil972

that what I meant by not clear 



Feb 15, 18 10:10 pm  · 
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Kamil972

Hi Pete,

Feb 15, 18 10:17 pm  · 
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Kamil972

Hi Pete,

Feb 15, 18 10:17 pm  · 
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Kamil972

Where are you located?

Feb 15, 18 10:17 pm  · 
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Kamil972

I am PE my self but I am trying to help someone I know

Feb 15, 18 10:19 pm  · 
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Kamil972

Can you stamp drawings?

Feb 15, 18 10:21 pm  · 
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Kamil972

Civil Engineer PE

Feb 15, 18 10:25 pm  · 
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Non Sequitur

That's not building related... stick to making grading plans and turning simple CAD files into Z coordinate nightmares. Hire someone you cheapskate.

Feb 15, 18 10:45 pm  · 
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Bench

Wait how does a registered civil PE not understand how to look up something in the building code? F k me thats scary!

Feb 16, 18 2:10 pm  · 
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chigurh

civil PE = inner-tube and hot-dog experience

Feb 16, 18 4:43 pm  · 
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On the fence

The IRC would allow this.  You still need collar ties in the upper 1/3 as well.  But as long as the ceiling joists are located in the bottom 1/3 AND the rafters are sized correctly due to an adjustment factor (up to .67), its doable.

Feb 16, 18 12:27 pm  · 
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Wood Guy

It's crystal clear in the IRC, if you know where to look. If you don't know where to look it's probably not something you should be engineering. Since you left out the two pieces of information that actually matter in this case, that's another sign that you should hire a professional.  

Feb 16, 18 4:13 pm  · 
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arch76

With the top of exterior wall at 6'-8", I guess the doors are on the gable end? sexy. 

Feb 16, 18 7:14 pm  · 
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Wood Guy

Nevermind, I reread the OP.

Feb 17, 18 9:09 am  · 
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Medusa

Sounds like a center for ants, but three times as big.

Feb 18, 18 9:52 am  · 
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