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-   -   Ridge and Rafter size (http://www.diychatroom.com/f19/ridge-rafter-size-78444/)

Joe1. 08-10-2010 11:22 PM

Ridge and Rafter size
 
Hi guys,

I just wanted to make sure, before the carpenters finish off the dormers, that we're working with the right size lumber. The inspector was pretty flexible, but I just wanted to here from some other people what they thought.

Anyway, the dormer size (framing size) is 42.5", and the height is about 74 inches. The pitch is 6:12, and the ridge length is about 6 feet. I plan on using a 2x8 ridge and 2x6 rafters (on 2x4 wall studs). Originally I was intending 2x8 for ridge and rafters, but I think that 2x6 should be fine, and I didn't want to increase the span too much betweem the ridge and the window top.

With a flat ceiling it didn't matter about the ridge hanging down, so I figured I'd go with 2x6 rafters.

Does it sound good, guys?

Joe

BigJim 08-11-2010 01:05 AM

Quote:

Originally Posted by Joe1. (Post 483850)
Hi guys,

I just wanted to make sure, before the carpenters finish off the dormers, that we're working with the right size lumber. The inspector was pretty flexible, but I just wanted to here from some other people what they thought.

Anyway, the dormer size (framing size) is 42.5", and the height is about 74 inches. The pitch is 6:12, and the ridge length is about 6 feet. I plan on using a 2x8 ridge and 2x6 rafters (on 2x4 wall studs). Originally I was intending 2x8 for ridge and rafters, but I think that 2x6 should be fine, and I didn't want to increase the span too much betweem the ridge and the window top.

With a flat ceiling it didn't matter about the ridge hanging down, so I figured I'd go with 2x6 rafters.

Does it sound good, guys?

Joe

Joe that sounds fine, you are on the right track.

jlhaslip 08-11-2010 01:08 PM

ditto

I was worried that you might be using a 'sloped' ceiling, in which case the 2 x 6 rafters would be too short to allow for effective insulation.


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