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Parapet wall to truss connection

struct_eeyore

Structural
Feb 21, 2017
256
I've got a condition where I have to terminate flat roof wood trusses into a face of a parapeting (can I say that?) wall.
The bonus here is that the roof slopes, so in order to keep the sheathing flush with the top chords, I'm showing the trusses installed on an incline.
I've been mulling over the connection details and have come up with something like this (below)
Wondering if anyone will see any issue with what I'm proposing here - or any other comments/suggestions.
Thanks in advance.

Screenshot 2025-01-09 165350.png
 
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You need to show a nailing schedule for the dbl. 2x12 to transfer the shear or your bolt capacity will be diminished.
 
My first thought in seeing that detail is to ask what's the other end of the truss look like?

CMU walls are not perfect. They'll lean in or out, or wander in and out. There needs to be some adjustability in the design. Like maybe a center bearing wall where trusses lap.
 
Can you use insulation to achieve the roof slope instead of sloping structure?

I don't love mixing CMU with concrete in this way, can you make the tie beam out of CMU?

I'm also wondering about how connecting the top chord and the bottom chord to the wall is going to affect things. Is that going to make this act like a psuedo moment connection?
 
Is that supposed to be a really deep concrete beam?

Our typical detail just has a bond beam at the roof level and a PT ledger with typical face-mount truss hangers (THA's or similar). No mixing and matching concrete and masonry. Vert wall reinf would just be designed for the parapet's cantilever.
 

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