Need a book? Engineering books recommendations...

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

RE: 50' oc control joints for SOG ok?

[Subject Prev][Subject Next][Thread Prev][Thread Next]
> 50' control joints seems high to me
> I usually go for square areas between 20' and 25' grids.
> I usually don't count on surface friction.  The subgrade may get covered
> with a vapour barrier to prevent moisture and gas migration or the
> subgrade design is not followed and you have a smoother surface than
> expected.

FWIW, it's been awhile since I've done "subgrade friction" and I don't
have my "books" handy, but I seem to recall that you allow for the vapor
RETARDER (not "barrier") in the coefficient of friction.

Sorry I don't know this stuff off'a the top of my head, but I can only
keep so much "uploaded" at any one time and for the last couple of weeks
I've spent a lot of time "uploading" new guitar music.

(That's another way of sayin' "I ain't Harold Sprague").

******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at:
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*   Questions to seaint-ad(--nospam--at) 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: 
******* ****** ****** ****** ******* ****** ****** ********