Cold Form Steel Roof Joist To Wall Stud Connection???

[TekEngr]

I am designing a light gauge steel building. I proposed the below connection to client between roof joist to wall stud however outside wall is going up to parapet level as shown.
So I am confused about the strength of this connection does this scheme will work or not under the 6 KN load (joist is simply supported and carrying the UDL load). i am worried about the bottom flange bending of U profile (how I can check) and screw pullout strength.
Please advise how I can make this connection better and what check do I need to analyze.

 

[XR250]

Wow, that's tall. So again, If the strapping is attached to the track at the top of the parapet, how are you gonna get your diaphragm shear load up there?

 

[Ron]

shahg123....what level of wind loads do you have at this site?

 

[TekEngr]

horizontal pressure is 0.92 KN/m^2
Vertical Pressure is 1 Kn/m^2


Strap bracing will be in 2 parts one will be start from top of parapet to first floor level and 2nd will be start first floor level to foundation level so both story bracing is attached with each other through hold down brackets at first floor level. First floor wall bottom track is directly on ground floor wall top track (in between both track there is 22mm thick floor cement board).

 

[XR250]

Strap bracing will be in 2 parts one will be start from top of parapet to first floor level and 2nd will be start first floor level to foundation level so both story bracing is attached with each other through hold down brackets at first floor level. First floor wall bottom track is directly on ground floor wall top track (in between both track there is 22mm thick floor cement board).

That still does not get your roof diaphragm shear into the strapping. The devil is in the details here (and with light gage in general) You might need to add strapping from the backside of the parapet down to the diaphragm and figure out how to make a tension connection for strap at the diaphragm edge member.
The parapet detail works alot better with plywood sheathed walls as getting the load into the shearwall is easy.
You could also consider platform framing this thing and adding diagonal braces from the roof deck to the parapet.