Wood Parapet - Kicker / Shed Roof Connection Detail
Wood Parapet - Kicker / Shed Roof Connection Detail
(OP)
We are raising the parapet of a wood structure. The existing structure has near flat wood roof trusses and wood walls. The wood roof trusses are bottom chord bearing on top of the existing wood stud wall. The new parapet studs will have a short cantilever (equal to the depth of the existing truss), however, in some locations we will add kickers on the roof to brace the parapet studs (i.e. form a shed on the backside of the parapet). My question is - what is the best way to fasten the diagonal kickers to the parapet wall and the existing roof.
I have thought about fastening them alongside the existing roof trusses and along side the parapet studs. Two issues with this -> you have to cut the diaphragm to install each kicker and you interrupt sheathing on the back side of the parapet wall. I though about using a plate so the cut is smaller. I thought about putting down a double 2x member which and using a hurricane clip and toenails for shear. The problem with joist hangers is there is no rating for axial load tension.
Any suggestions are appreciated.
I have thought about fastening them alongside the existing roof trusses and along side the parapet studs. Two issues with this -> you have to cut the diaphragm to install each kicker and you interrupt sheathing on the back side of the parapet wall. I though about using a plate so the cut is smaller. I thought about putting down a double 2x member which and using a hurricane clip and toenails for shear. The problem with joist hangers is there is no rating for axial load tension.
Any suggestions are appreciated.





RE: Wood Parapet - Kicker / Shed Roof Connection Detail
Build a triangular structure at each truss, (I'm guessing they are 24" oc or so, 96" oc may ceate a different concept), consisting of parapet stud, flat base and 45 degree brace. If you have a long run, a truss company can make these very inexpensively. Plywood up the backside and roof up the backside.
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
I think that is a good idea, and the direction I will head. I'm still not quite show how I will fasten it down to the roof. Possibly install a nailer which is at the back of the truss, laid flat on the roof and runs perpendicular to the new trusses. It then gets lag screwed into the existing trusses. Then the new triangle trusses will have a simpson clipangle which fastens them to the nailer.
EIT
www.HowToEngineer.com
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
@EE -> you know I thought of toenails at first but then shied away from that; really without sound justification. I suppose that is the simplest rout and the framing is fairly redundant.
EIT
www.HowToEngineer.com
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
RE: Wood Parapet - Kicker / Shed Roof Connection Detail
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.