Timber Connection Design: split_ring
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| split_ring | sr_dfl_258 | 1 | 0.8 | 1 | 1 | 0 | 0 | 0 | 0 | 2,270 | 2.75 | 5.5 | 1 | 0 | 2.625 | 2-5/8 in split ring | 1.5 | 2-5/8 in split ring connector; Species Group A (DFL and SP); P=2270 lb parallel to grain; Q_perpendicular=1370 lb (stored as notes); per NDS Table 13.2A Group A; min penetration=1.75 in; 3/4 in through-bolt required; full end dist=5.5 in; Ct=0.80 for T=100-125 deg F | 1.75 | 6.75 | Douglas Fir-Larch | 0.5 | 0 | 0 |
| split_ring | sr_dfl_400 | 1 | 0.8 | 1 | 1 | 0 | 0 | 0 | 0 | 4,410 | 4.5 | 9 | 1 | 0 | 4 | 4 in split ring | 2.5 | 4 in split ring connector; Species Group A (DFL); P=4410 lb parallel; Q_perp=2640 lb per NDS Table 13.2A; 4 in ring requires 1 in bolt; min end dist full=9 in; min edge (loaded)=4.5 in; row spacing=9 in | 2.25 | 9 | Douglas Fir-Larch | 0.5 | 0 | 0 |
| split_ring | sr_sp_258 | 1 | 0.8 | 1 | 1 | 0 | 0 | 0 | 0 | 2,270 | 2.75 | 5.5 | 1 | 0 | 2.625 | 2-5/8 in split ring | 1.5 | 2-5/8 in split ring in Southern Pine; SP is Species Group A same as DFL; P=2270 lb parallel; Q_perp=1370 lb; same table values as DFL Group A | 1.75 | 6.75 | Southern Pine | 0.55 | 0 | 0 |
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