This how not to fasten joist hangars and band joists on a deck.

I guess thats also why you aren’t supposed to use a hammer to drive a screw.

In that first pic, are those electrical wires running along the bottom? Looks like they’re not secured or rated for outdoor use.

Looks like phone and cable…

Phone & Cable

As they say, “When the only tool you have is a screw gun, every problem looks like a screw.” :mrgreen: