Bigfootchevy wrote:
First let me thank everyone for your comments.
Just so everyone knows I didn't build this storage unit myself, I hired two carpenters (roofers) from this area that where building homes at the time. I believe that was 4 winters ago. So it was never a few hundred dollar half built storage shed. At the time I questioned them about the collar ties and was told they where not needed. At the time I expected to see collar ties on every other rafter and that's not what they did. They claimed they did it a different way. What do I know, I am not a carpenter.
But after several people being here today we don't think that having collar ties would have helped in this case. It looks like one of my 6 by 6's middle support posts twisted very badly and forced the 2 by 10's off the other two end support posts. Therefore allowing all the support for the rafter to go free. I have 2 by 10's and 2 by 8's split like toothpicks at the top of the structure. I have no idea why would this middle post twist so badly as to pull everything apart. Like I said earlier it been up there four years without a problem.
Paul
Sorry to hear of your loss , what a mess . Hope your insurance comes through for you if you have any .
Your instincts were good about the collar ties , your carpenter/roofers were not . Don't beat yourself up . Any carpenter worth his salt would have known better and had more support for that roof . The post twisting can happen , even after years , but if everything were fastened properly it would not have caused a failure .
As far as steel vs wood , around here where we see 8-10 feet of heavy eastern snow the failure of metal structures is far greater than wood with heavy snow loads , something to ponder . Best of luck