Calcolatore Momento Flettente Gratuito
Calcola il momento flettente massimo per travi con carico distribuito o concentrato.
Total Max Moment
6,125 ft-lbs
Total Max Moment vs Beam Span
Formula
## Bending Moment **Uniform load: M = wL squared / 8** **Center point load: M = PL / 4** Both produce maximum moment at mid-span for a simply supported beam. If both loads are present, add the moments together (superposition).
Esempio Risolto
14 ft beam with 250 lb/ft uniform load.
- 01M = 250 x 14 squared / 8 = 250 x 196 / 8 = 6,125 ft-lbs
- 02No point load contribution
- 03Required section modulus = M / Fb (allowable bending stress)
Domande Frequenti
What units should bending moment be in?
In the US, bending moment is typically expressed in foot-pounds (ft-lbs) or inch-pounds (in-lbs). Multiply ft-lbs by 12 to get in-lbs, which is needed for beam sizing.
How do I use moment to size a beam?
Divide the moment (in inch-pounds) by the allowable bending stress (Fb in psi) to get the required section modulus (S in cubic inches). Then pick a beam with S equal to or greater than this value.
Impara