Beam Loading

Moment and deflection for simply supported beams.

Run the calculator

Formula and source

Simple-beam reactions / moment / deflection from load-type formulas (uniform, point, partial). M_max for uniform = wL²/8; deflection_max = 5wL⁴/(384 EI).

Classical mechanics of materials; AWC NDS-2018 design values for wood.

Audience

This tile is built for carpentry 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.