Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Roof Diaphram w/ sheathing on roof and Ceiling
- Thread starter TimmyH76
- Start date
minorchord2000
Structural
You can also use subdiaphrams. A great reference for this is Desgin of Wood Structures by Donald Breyer, etal, 4th edition chapter 15.
- Thread starter
- #4
Yes it is blocked, the problem is the owner has a line on 7/16" material that he "has to use". So it's one of those things were the client comes to you and says I have six boxes of toothpics and some post cards can you make it work so that I can build a mansion that won't fall down , but this is all you can use. Thanks.
structuralaggie
Structural
It seems analogous to using a double sided shear wall. The weekest side capacity times two for total capacity.
minorchord2000
Structural
I would not rely on the ceiling as a diaphragm. The ceiling may get removed by some future owner. If you have a problem with the high boundary shear force, double up the roof sheathing and fasten as close as the code will allow. Couple this with the subdiaphragm theory and you should be good to go.
- Status
Similar threads
- Question
- Locked
- Question
