Replies

1. 
   rasconc | Feb 12, 2004 07:23pm | #1

   Wouldn't that be 3:1?

1. 
   bobl | Feb 12, 2004 07:48pm | #2

   that's why i used an example, wasn't sure how to state the ratio.bobl          Volo, non valeo

2. 
   xMikeSmith | Feb 13, 2004 01:20am | #3

   no.. the width of the crown has nothing to do with the length...

    the thickness of the material has nothing to do with a ratio..

    the penetration into the framing material is what determines....

   nail schedules are called out in the building code.. and staple substitutes are also spelled out..

   some things are determined by testing.. like roofing.. tear out resistance... tear resistance.. strength of material

   sheathing is to be nailed into framing.. so they are looking for bearing capacity of the head (nail) or crown (staple).. and the withdrawal strength of the fastener.. a function of the roughness and the pentration into framing lumber... for example, a hot dipped galvanized nail has more withdrawal resistance than a bright nail...a long roofing nail would have good withdrawal strength , and good bearing force, but you can snap the head off the nail ...

   and on and on... each fastener has a different purpose

   framing , they are looking for withdrawal strength and shear strength

   Mike Smith   Rhode Island : Design / Build / Repair / Restore

1. 
   mikerooney | Feb 13, 2004 02:04am | #4

   I'm assuming you're talking 7/16" crown 1 1/2" leg staples in 1/2" sheathing?

   Sounds about right, but if it has to pass an inspector; he's the one you should be asking. 

3. 
   dIrishInMe | Feb 13, 2004 03:21am | #5

   OK - here is what the IRC says for structural panels (I looked it up): 

   1/2" - 15ga 1 1/2" or 16ga 1 3/4"

   3/4" - 15ga 1 3/4" or 16ga 2"

   and BTW the spacing is  6" edges, 12" in the field, same as nails, and I believe this is all for 100mph wind speed area (or less).  Medium crown staples.  Here is some "news", to me anyway - 6p nails are ok for 3/4" subfloor and walls.  This is a little off topic but there is an interesting article in "the other mag" this month about shear panels for high wind areas.

   I think staples make a lot of sense when you consider they are almost 1/2 the cost of nails, your gun holds 2x as much, and once you have to tear something apart that has been stapled to code you gain a healthy respect for them.
    

   Matt
1. 
   xMikeSmith | Feb 13, 2004 03:40am | #6

   matt.... i used to have staples.. they were ok...

     but we do a lot of remodeling.. and everytime  we find staples .. man.. what a bummer..

    i hate staples....Mike Smith   Rhode Island : Design / Build / Repair / Restore