Bolt Shear + Bearing / Tearout Strength (AISC 360 J3)
The design strength of one bolt through a plate, the smaller of shear rupture (Rn = ns x Fnv x Ab) and bearing/tearout at the hole (1.2 lc t Fu, capped at 2.4 d t Fu). A 3/4 in A325-N bolt in single shear through 1/2 in A36 gives 17.9 kip design (LRFD) / 11.9 kip allowable - bolt-shear-governed. Thin the plate to 1/4 in and tearout takes over at 14.3 kip: the flip this tile exists to catch. Standard holes, one bolt at one hole. A design aid, not a substitute for the engineer of record.
Formula and source
Rn_shear = ns x Fnv x Ab; bearing/tearout Rn = min(1.2 lc t Fu, 2.4 d t Fu) with lc = le - dh/2 (edge) or s - dh (interior); governing = min; phi Rn = 0.75 Rn; Rn/Omega = Rn/2.00.
AISC 360-22 §J3.6 (Table J3.2 Fnv) and §J3.10, by name; the material Fu and the bolt Ab / Fnv are standard tabulated values.
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.