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Old 08-11-2012, 01:26 PM   #1
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Simpson Joist Hanger Question


I'm building a floating deck and I'm using the LUS model joist hanger from Simpson. Instructions call for a 10D, 3" nail for a single 2x or I can use the #9 2-1/2" Simpson screws. Since I'm hanging the joists on a 2x8 rim joist, either of these options are too long. I want the joist to provide the required support but I don't want anything breaking through the backside of the rim joist, so just use 1-1/2" nails?
Makes sense to me, but just want to make sure.
Yes, this is my first deck.

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Old 08-11-2012, 02:11 PM   #2
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Simpson Joist Hanger Question


I'm not familiar with that particular hanger, but I have never heard of a Simpson product that called for a regular 10d nail. Are you sure?

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Old 08-11-2012, 03:59 PM   #3
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Simpson Joist Hanger Question


Simpson joist hangers come in a variety of types. The LSU hanger takes two kinds of nails. The longer, standard 10d nails are installed at an angle, so a 3 inch nail does not typically break through the other side. You use Simpson 10d short nails (1.5 inches) for the face nailing holes ONLY. This is a source of considerable confusion, even among building inspectors and contractors, since the short 10d nails are typically sold right next to the hangers, and are called joist hanger nails, whereas in fact Simpson specifically states that to achieve the full rating of the hanger, you need full size 10d nails for the diagonal nails.
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Old 08-11-2012, 04:05 PM   #4
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Simpson Joist Hanger Question


Thanks for the clarification, that was the path I was leaning toward taking.
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