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parapet in metal stud wall building

parapet in metal stud wall building

parapet in metal stud wall building

(OP)
Hello,
I looking for parapet detail in stud wall building.Parapet is about 3 ft tall above roof ,I am thinking of cantilevering channels at 4 ft spacing and infilling metal studs at 16 in o.c. Now I am wondering how the torsion (moment from channel) to the wall be taken into design of wall.
The top of the metal studs wall is connected to HSS load distributor tube and the channel will be welded to the HSS.I have attached a sketch link (don't sure if the link works)

Any experience and thoughts appreciated.

RE: parapet in metal stud wall building

Support the trusses at the bottom chord, then extend the stud wall up from the bottom, brace it at the top.

RE: parapet in metal stud wall building

I agree with extending up the studs from the bottom but would probably only attach each one to the continuous diaphragm angle (for only a 3 ft cantilever) and not add a top brace. Design the bottom attachment of each stud for the backspan reaction.

RE: parapet in metal stud wall building

I did not mean a brace in the sense of a diagonal. Just prop the cantilevered stud at the roof level. When I said "top", I meant top of truss. Sorry if the OP may have misunderstood.

There are two members shown at the top of truss level. As you suggested, this only needs to be one member, located inside the studs.

RE: parapet in metal stud wall building

I agree with the others - use the deck edge angle as a fulcrum and extend the studs down to the bottom of the trusses (infilling the truss spaces with parapet studs in other words).

RE: parapet in metal stud wall building

(OP)
Thanks a lot to all. I agree too- this is the best way .

RE: parapet in metal stud wall building

Yes thats a good solution here.
Wondering what a good detail would be if the truss was a joist and fairly shallow ?

RE: parapet in metal stud wall building

civeng80,
In that case, I would continue the wall studs up for the cantilevered parapet, and provide headers between the studs for the joist support. Because in the OP's case, this header would be part of the lateral system, it could go inside the studs, as long as the studs are designed for the eccentricity of the vertical loading.

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