In my questions about building on here it was recommended I use stiffened nails.
I looked on the web for some general numbers to compare shear strength of standard nails with stiffened and hardened. No joy except for standard...there I got 1625 lbs. and 125-140 lbs. The latter looks correct. No joy on the others.
I wrote MAZE and here is their reply. Of course will vary by ring/spiral and size...but the relative difference is likely close. And if you need the exact figure, they got back to me in 12 hours. I like good customer service...I only bought 40 lbs of nails from them so far.
Might be useful in nail buying decisions. Was for me.
(https://i1185.photobucket.com/albums/z354/alextrent/House%20Uploads1/Screenshot2011-12-21at50628PM.png)
(https://i1185.photobucket.com/albums/z354/alextrent/House%20Uploads1/Screenshot2011-12-21at50606PM.png)