Does the rigid-diaphragm relief for a garage-front wall survive a nailed-wall stiffness model?

What it found

Replaces the toy pier stiffness of house-diaphragm with a four-term deflection (chord bending, panel shear, nail slip, hold-down slip) and reruns the rigid roof-diaphragm split. The sign holds: a centred 22 ft garage door leaves the wall at 0.05–0.19 of its partner's stiffness, and its demand over capacity at 6 in nailing falls from 1.05 (flexible split) to 0.36, 0.48 and 0.59 at 100, 250 and 500 plf. Stylised: every constant is from memory and unchecked, stiffness is a secant at a fixed shear, and the flexible split still governs.

A figure from its own output

Paper, code and results

• README and method
• Experiments and results
• Code
• Tests

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Produced with AI assistance (Claude). Results are from the code in this repository and are simulated or stylised unless the abstract says otherwise; nothing here implies affiliation with or endorsement by any lab, researcher or company cited. MIT licensed.