/diy/ - Do It Yourself

This is the beam.
It isn't normal I beam. Much thicker and no taper to it. It is 4in wide by 4in tall, and looks to be 1/4 in on the crosses and 3/16 on the spine.
Pretty strong stuff.

I have it sticking out 4 feet, and 6ft 5 inches of it across the roof. Bolted twice every foot.
I will screw on eyes to the last two bolts and maybe exchange them to grade 8, then install two 3000lb ratchet straps down to a lower set of eyes on the container. All on the inside. This will make it very strong, eliminating the worry of the roof not being strong enough, and put the work solely on the beam itself with a 40% reduction in weight too.
And the door frame itself is much strong enough to handle it but I will additionally leave one door shut for even more strength.