If you can take multiple 1/4" lags, you can consider the Hollaender
Speed Rail square flange. I have used this to built steel pipe rack,
then attaching solar rail to the pipe with u-bolts.
On 3/3/2018 12:45 PM, Ray wrote:
I can see that the TJI manu doesn't want us blowing 3/8" lags through
the top chord of their engineered system. On the other hand, it IS
designed to have nails and at least deck screws put into it, as that's
how the builder attaches the roof decking. It seems that William's
measured approach is (as usual) good advice. I think that multiple
1/4" lags with predilled holes might be acceptable, but that would be
up to the engineers and AHJ. My issue with the EZ feet is that you
are entirely dependent on how well the roof decking was installed.
Nails and construction staples don't have great pull out resistance,
so I would hope that the builder uses some type of rated screws to
attach the decking.
Ray Walters
Remote Solar
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