Single-Shear Bolted / Dowel Lateral Design Value (NDS Yield-Limit Z)
How much lateral load one bolt through two wood members carries, from the NDS European yield model: all six single-shear yield modes (Im, Is, II, IIIm, IIIs, IV) computed from the dowel bearing strengths, the bolt bending yield, and the geometry, with the governing Z the smallest. A 1/2 in bolt into a thin side member almost always governs in mode IIIs. The reference value before the CD / CM / Cg / geometry adjustment factors, which the user applies. A design aid, not a substitute for the engineer of record.
Formula and source
Fe|| = 11,200 G; Fe_perp = 6,100 G^1.45 / sqrt(D); Hankinson blend to theta; Re = Fem/Fes; Rt = lm/ls; Ktheta = 1 + 0.25(theta/90); the six single-shear yield modes Z_Im..Z_IV of Table 12.3.1A; Z = min of the six.
NDS Table 12.3.1A single-shear yield-limit equations, the 12.3.3 dowel bearing strengths, and the Table 12.3.1B reduction terms, by name.
Audience
This tile is built for trades and the adjacent professions in the Carpentry and Construction group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
Related tools
Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.