I don't know anything about pole barn construction. So are they always built with no foundation? I guess a slab is installed at some point. I want to build a garage near three huge walnut trees. But I don't want to break the roots with a foundation. I am thinking about driving pilings, and...
The cross section of the ramp looks like a channel section. It looks to me that the flanges are not long enough. But still he is an engineer, so I assume its engineered.