Simpson Mending Plate for custom made wood truss
Simpson Mending Plate for custom made wood truss
(OP)
A client did some "custom" floor trusses with simpson "MP-36" and "MP-24" mending plates. The plates very specifically say that they are NOT to be used for trusses.
I have to verify the trusses. Any one has had any experience in using these plates as truss connectors?
The client did install nails through the plates "to make sure it stay in place"...
Any thoughts?
I have to verify the trusses. Any one has had any experience in using these plates as truss connectors?
The client did install nails through the plates "to make sure it stay in place"...
Any thoughts?





RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
CTcray is on the right path....
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
Never, but never question engineer's judgement
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
When you say "floor truss" is it 1.5" wide or 3.5" wide? Or perhaps a better question is what side of the lumber are the plates on, the wide face or the narrow face?
Also, what's the span, spacing, and depth of the truss?
RE: Simpson Mending Plate for custom made wood truss
=)
"Thar easier to put up this way."
RE: Simpson Mending Plate for custom made wood truss
The bottom chord is double, with a splice on each layer (staggered) He also, installed a mending plate at the splice, which is located about 1/3 of the span.
I like the idea of the shear plate calculation
RE: Simpson Mending Plate for custom made wood truss
When someone so clearly violates the code, it would make me wonder what other items also violate the code.
RE: Simpson Mending Plate for custom made wood truss
Never, but never question engineer's judgement
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
RE: Simpson Mending Plate for custom made wood truss
Aparently he does not realize that the truss that are built in a controlled environment with dimensional and procedural controls have much higher allowable capacity due to the controlled methods and related QC proceedures. These CAN NOT be duplcated in the field.
Beyond that, I wonder how much of the materials used in the truss manufacture he accurately "copied". It would appear that he did not correctly copy the truss plates.
What about lumber grades? Do you suppose he did any better with that.
Full scale load testing would be a valid method of evaluation but it is unlikely to be successful at developing adequate strength. I would also be concerned about long term performance.
The fact that the Simpson plates are specifically stamped as NOT for truss application seems like something that will be hard to get around.