On Wednesday, July 6, 2016 at 9:21:11 AM UTC-6, The Real Bev wrote:

BIL was a roofer in New York. He told us about "chicken ladders".

8/12 were the worst. Because you *can* walk on them. If all is dry, free of sawdust, and debris, you can get around. But it's really easy to go off. Sorta like when something weighs a few hundred pounds you think you can get it up there so you try. Best if the beam weighs 40,000 lbs so you just order the crane.