Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Re: WOOD: "Economical Spacing of Rafters/Joists"

[Subject Prev][Subject Next][Thread Prev][Thread Next]
Here in the mid-atlantic, almost everything that can be trussed, is. Wood trusses for residential are, almost without exception, 2' o/c and sheathed with 7/16 osb (24/16 span rating) with clips. Commercial usually steps up to 5/8" osb or 19/32 plywood over trusses on 2' centers.

At 09:17 PM 8/17/2004 +0000, you wrote:

Many of us in So. CA tend to use 16" spacing for rafters. This is because we usually use 15/32" CDX sheathing and thus the 16" rafter spacing limits deflection due to walking on the roof. Also ceiling joists are almost always at 16" spacing and thus enables connections to rafters better when they are at 16" o.c.

Stan Scholl, P.E.
Laguna Beach, CA

Jordan Truesdell, PE



******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
* * This email was sent to you via Structural Engineers * Association of Southern California (SEAOSC) server. To * subscribe (no fee) or UnSubscribe, please go to:
*
*   http://www.seaint.org/sealist1.asp
*
* Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you * send to the list is public domain and may be re-posted * without your permission. Make sure you visit our web * site at: http://www.seaint.org ******* ****** ****** ****** ******* ****** ****** ********