Timber Connection Design: common_nail
NDS 2018 (AWC) timber connection design values — dowel bearing strengths, withdrawal design values, and lateral design values (Z) for common nails, box nails, sinker nails, wood screws, lag screws, bolts, split ring connectors, shear plate connectors, and timber rivets by wood species group
| fastener type | record id | CD load duration typical | CM wet service | Cg group action | Ct temperature | Fe parallel psi (psi) | Fe perp psi (psi) | Fe small D psi (psi) | Z double shear lb (lb) | Z single shear lb (lb) | edge distance in (in) | end distance parallel in (in) | end grain factor Ceg (dimensionless) | fastener bending yield Fyb psi (psi) | fastener diameter in (in) | fastener length or size | min member thickness in (in) | notes | penetration depth min in (in) | row spacing in (in) | species group | specific gravity G (dimensionless) | toe nail factor Ctn (dimensionless) | withdrawal W lb per in (lb/in) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| common_nail | cn_dfl_10d | 1 | 0.75 | 1 | 1 | 0 | 0 | 4,637 | 0 | 104 | 0.74 | 2.52 | 0.67 | 80,000 | 0.148 | 10d (3.0 in) | 1.5 | 10d common nail D=0.148 in; Fe=16600*(0.50)^1.84=4637 psi; W=1380*(0.50)^2*0.148=1380*0.25*0.148=51.1 lb/in; Z=104 lb single shear 1.5 in side member | 1.48 | 1.78 | Douglas Fir-Larch | 0.5 | 0.83 | 51.1 |
| common_nail | cn_dfl_16d | 1 | 0.75 | 1 | 1 | 0 | 0 | 4,637 | 0 | 116 | 0.81 | 2.76 | 0.67 | 80,000 | 0.162 | 16d (3.5 in) | 1.5 | 16d common nail D=0.162 in; Fe=16600*G^1.84=16600*(0.50)^1.84=4637 psi; W=1380*G^2*D=1380*0.25*0.162=55.9 lb/in per NDS 2018 Sec 12.2.1; Z=116 lb single shear 1.5 in side member per NDS Table 12N; min penetration=10D=1.63 in; Ctn=0.83 for toenail; Ceg=0.67 for end grain load NDS Sec 12.5 | 1.63 | 1.96 | Douglas Fir-Larch | 0.5 | 0.83 | 55.9 |
| common_nail | cn_hf_16d | 1 | 0.75 | 1 | 1 | 0 | 0 | 3,513 | 0 | 100 | 0.81 | 2.76 | 0.67 | 80,000 | 0.162 | 16d (3.5 in) | 1.5 | 16d common nail in Hem-Fir; Fe=16600*(0.43)^1.84=3513 psi; W=1380*(0.43)^2*0.162=1380*0.1849*0.162=41.3 lb/in; Z=100 lb single shear | 1.63 | 1.96 | Hem-Fir | 0.43 | 0.83 | 41.3 |
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