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Old 10-28-2010, 02:24 PM   #1
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Plywood gussets

New to the site, thanks for having me!

I am building my own trusses and just found out that the gusset staple plates at the hardware stores are not for trusses. So I am making my own gussets out of 1/2" plywood. My question is how big do the plywood gussets need to be and what is the spacing of the nails?
Thanks for the help!!


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Old 10-29-2010, 12:09 PM   #2
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If roof is for a structure housing people, I'd get a structural engineer to spec the design for them (gauge, placement, nails needed, spacing, etc). If they fail, they could cause boo-boos.


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Old 10-29-2010, 12:38 PM   #3
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Just what I thought, more work. Thanks!!
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Old 10-29-2010, 01:52 PM   #4
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Is your truss design taken from a commercial truss? A lot of commercial trusses use higher grade lumber than is generally found at the big box stores, be careful you use the correct grade. As for the truss brackets and nailing, you may be able to find some information at the University of Wisconsin Forest Products Laboratory website on gusset design and nailing patterns. Before the introduction of air impact gang nail systems, trusses were successfully built using plywood or similar gussets, and the data to build them must be available somewhere, even though the technique is no longer followed by any of the commercial shops I am familiar with. Frankly, getting an engineer involved on something like gusset design seems to be overkill, kind of like hiring an engineer to design standard framing for a house, it just isn't necessary unless there is something unusual about the framing. Ditto for the trusses.
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