Truss Plate Moment Capacity
Truss Plate Moment Capacity
(OP)
It would be great if somebody could point me in the direction of any documents related to estimating the in-plane moment capacity of metal truss plates for wooden roof structures. I was hoping that I could find a method of quickly, and relatively accurately, assessing the moment capacity of the contact areas for each member at a joint.
I am researching wind effects on residential structures and need rough capacities to identify the locations of probable failure initiation.
I am researching wind effects on residential structures and need rough capacities to identify the locations of probable failure initiation.






RE: Truss Plate Moment Capacity
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Truss Plate Moment Capacity
I have been attempting to pick apart the Ma equation from the TPI Clause 8.7.1, but find it to be quite complicated. In the TPI 2007 Commentary I also found reference to the moment provisions from the previous version, where the applied moment was converted into an equivalent tensile force and compared to the tensile capacity of the joint.
Given that many of my modeled material properties are assumed according to our assessment of "typical" house construction, and that much of my analysis has been approximate to this point (working through an analytical "proof of concept" rather than a detailed assessment) I'm wondering if its worth my limited time to dive into the current provision or settle for a range of approximate values.
Any thoughts?
RE: Truss Plate Moment Capacity
RE: Truss Plate Moment Capacity
I also intend to neglect load and resistance factors to compare (estimated) true capacity to expected wind loads.
RE: Truss Plate Moment Capacity
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.