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Clutchcargo 08-09-2007 03:51 PM

rafter spacing
 
Sorry about all these newb questions.
I'm just putting up the rafters in my portico now. I've got the two end rafters up. The space is 38" where I need rafters. Do I evenly space them or keep as many on sixteens and have the last one spaced differently.
TIA

SecretSquirrel 08-09-2007 04:02 PM

I'd say to take no chances and set on 16's... that way if you're sheathing with some kind of 48" wide material it will line up no matter what.

jiggyjack 08-10-2007 06:22 PM

16 OC see my other post.

joasis 08-11-2007 04:48 AM

Split the distance, since you are working out material lengths, it would be fine. We typically frame on 24's for roofs, rarely on 16's. If you notice, on tape measures, there ie a black diamond mark at about 19 and 3/8 inches, repeating. This splits 16 and 24 to make 5 spaces in 8 feet instead of 4 or 6.

Clutchcargo 08-11-2007 08:38 AM

I'm going to wrap up the framing today.
Let me see if I have this right,
my choice is to either:
Evenly space the rafters @ 12.75" OC for a total of 4 rafter sets (1/2 ply)
Space @ 16s with the outer 2 sets of rafters at about 5" OC (1/2 ply)
Or just add one more set of rafters spaced at around 19.5" (3/4 ply)
All of these will pass code, correct?
Also attaching the rafters to the top plate I'm both using hurricane ties and toe nailing through the birds mouth. Is that correct?

joasis 08-11-2007 02:14 PM

Yep....no law against over building anything.


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