out of plane seismic forces in diaphragm or subdiaphragms

[tkhartle]

How do I figure out if a flexible metal deck can handle the compressive out of plane forces needed seismic design, parallel to the direction of the deck span.

I have a building assigned to design category C. The force is calculated from 12.11.2.1 ASCE 7-05. I would like to use the deck as the continuous ties parallel to the deck span. 12.11.2.2.4 does not apply, I will be using my joist chords in that direction. I am concerned that the deck may buckle under the compressive force. Joists are spaced at 6.25 feet. I'm using 1.5 type B 22 ga deck.

Any ideas?

 

[Prestressed Guy]

JAE has it exactly right. The only way you can safely place a joist close to the exterior wall is to make the wall a non-bearing curtain wall with a deflection head. If you are using the wall as a lateral force resisting element this will create its own set of challenges. It is better to keep the first joist out from the wall.

 

[kslee1000]

Ok, guys, I take the lesson here. Thanks.

 

[tkhartle]

haynewp,

thanks for your suggestion of calling the deck manufacturer for compressive axial load. I will do that.
I have heard of the suggestion of putting the angles as a horizontal truss as well. I am hoping the deck will take it.
thanks everyone for your input.