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Allowable Shear of Wood Panel Diaphragms

Allowable Shear of Wood Panel Diaphragms

Allowable Shear of Wood Panel Diaphragms

(OP)
Does anyone know of allowable shear values for wood diaphragms with panel thicknesses greater than 19/32"? The architect is asking for a 1" structural panel for the subflooring.

Ideally I would like a continuation of 2003 IBC Table 2306.3.1 (NDS Structural Panel Supplement Table 3.1B)

TIA

RE: Allowable Shear of Wood Panel Diaphragms

You could use the 19/32 values if the nail/screw embedment is met - I would think.  Or use two 1/2'' panels - one over the other.  Then you could definitely use the 1/2'' values.

You might look to APAwood.org for some help...

RE: Allowable Shear of Wood Panel Diaphragms

The diaphragm capacities are dependent on the sheathing thickness AND the nail size.  If you use a 1" sheathing thickness with the nails indicated in the design tables, you still only get credit for the capacities listed with the lesser sheathing thickness and the applicable nails.

RE: Allowable Shear of Wood Panel Diaphragms

(OP)
KBVT, I can show that it can support the applied shear load through NDS Table 11N. If I use a 10d common nail (D=0.148" and L=3") my nail penetration, p, into the main member is 13.5D. NDS says p=10D is sufficient to reach 100% of the allowable shear load for the nail. According to Table 11N (plus applicable adjustment factors), my shear capacity will exceed my applied load but I was just curious if anyone knew of an extension of that table. I am also curious how the blocked/unblocked factors in.  

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