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Re: Proposed roof design

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Bill,

I think dividing the insulation space to 24" squares is
your best bet as Paul Feather suggested. Splitting would
also be a concern for the 1x strapping when nailed with 16d's

Tarek Mokhtar, SE
Laguna Beach, CA






>Ladies and Gentlemen;
>
>An architectural client of mine is proposing an unorthodox (to me) roof
>design and has asked me to review. I have some concerns, but I thought I
>would solicit comments from the engineering community before I
>responded.
>
>When he first described the system to me, I thought the sheathing would
>be applied directly on the roof rafters.
>
>See: http://members.cox.net/ballense/roof.htm
>
>Criteria:
>
>UBC/CBC 70 MPH Wind, Exposure C
>Seismic Zone 4 (although residential construction and diaphragm shears
>should be small < 150 PLF).
>
>Your comments would be most appreciated.
>
>Thanks,
>
>T. William (Bill) Allen, S.E. (CA #2607)
>V/F (949) 248-8588
>San Juan Capistrano, CA
>http://members.cox.net/ballense/
>
>
>
>
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