The other day I was helping to put some boards in a tree fort and found that one of the boards that we had to move was held on with a 20d. Holy crap that was a hard nail to pull. Way more than a 16d. Had to get my crowbar. Got me to thinking…
So my question, Any offical word yet on gun nails, holding power and shear strength?
A few years ago, I tried to pin down the local inspectors on this issue but they were ” just go by what is spec’d” Talked to local Arch/Eng and they didn’t seem to be up on this issue either. It seems that the specs that most designers use assume 3 1/2″ and .160 diameter. ( if I remember that right ) Many gun nails, while at 16d length, are .133 or .148 in diameter. How does this effect schedules? I know many use 16shorts, 12ds etc.
I haven’t had to frame in a few years and I’m getting back in the game for a while.
Any new word on this since I’ve been playing at another career?