cavelamb fired this volley in
m:

My shop / hangar was made with 4" square pipe posts and 10" purlin
thirty feet long - unsupported. But I never hung much weight from
them.



Some time, look up the dead/live load capabilities of a 3-1/2" x 12"
lam-beam. You'd be amazed.

Consider, they use them to span garage door openings (supporting roof
structures) up to 22'.

LLoyd