jar546
Forum Coordinator
I want to try this out for fun and educational purposes. I have, what I believe is the correct answer, but you never know. I am proposing the anyone who is interested post whether or not you would approve this installation. This is something at any code official would have to do when plans are submitted. There are some rules for this so that we ensure it is educational and don't get of topic. Sorry to be a bit rigid on this:
1) Either you would approve it on the plans or you would not.
2) The question is as is, your local variations, if applicable are not relevant. This way everyone is in the same situation.
3) We are looking at this from a structural standpoint for the size of a rafter only, energy, and other items not applicable.
4) If you say no, please explain why and cite not only the code reference but how you determined it is not.
5) This is a prescriptive question, referring to an engineer/RDP is not an option. If you are certified under the IRC with the ICC, you certainly should be able to.
6) If you say yes, please explain how you arrived at your answer.
I really hope this becomes a good topic of discussion and we all learn something from it.
Disclaimer: This is not an actual situation that I or anyone I know currently has, this is hypothetical for discussion/education.
You are given plans for a home with a simple gable roof.
The roof will have a 6/12 pitch.
They will use asphalt shingles and the total dead load will be 10psf.
The ground snow load will be 40psf
The rafter span is 16'.
The height of the peak is 8'.
They will not be placing the ceiling joists at the top of the support walls, instead they will be raising the ceiling by placing the ceiling joists 24" up from the supporting walls tying into the rafters.
Framing will be with #2 SPF 16" O.C.
The framing details call for 2x10 SPF. Is this allowable and why or why not? Again this is prescriptive. Let's have some fun!!!
1) Either you would approve it on the plans or you would not.
2) The question is as is, your local variations, if applicable are not relevant. This way everyone is in the same situation.
3) We are looking at this from a structural standpoint for the size of a rafter only, energy, and other items not applicable.
4) If you say no, please explain why and cite not only the code reference but how you determined it is not.
5) This is a prescriptive question, referring to an engineer/RDP is not an option. If you are certified under the IRC with the ICC, you certainly should be able to.
6) If you say yes, please explain how you arrived at your answer.
I really hope this becomes a good topic of discussion and we all learn something from it.
Disclaimer: This is not an actual situation that I or anyone I know currently has, this is hypothetical for discussion/education.
You are given plans for a home with a simple gable roof.
The roof will have a 6/12 pitch.
They will use asphalt shingles and the total dead load will be 10psf.
The ground snow load will be 40psf
The rafter span is 16'.
The height of the peak is 8'.
They will not be placing the ceiling joists at the top of the support walls, instead they will be raising the ceiling by placing the ceiling joists 24" up from the supporting walls tying into the rafters.
Framing will be with #2 SPF 16" O.C.
The framing details call for 2x10 SPF. Is this allowable and why or why not? Again this is prescriptive. Let's have some fun!!!