As an engineer we were taught to use a 2.5 safety factor. This looks like they used .9
What does that mean, 2.5 factor?
That was my first thought. Although I never worked as an engineer, I have two degrees. And as someone who is always building something, this just doesnt look right, not strong enough, even with those trusses, but what do I know..
As an engineer in training I was taught that in civil engineering (bridges and such), the factor was 5. Early sixties.