Calculadora de Momento Flector — Fórmula

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).

Ejemplo Resuelto

14 ft beam with 250 lb/ft uniform load.

  1. M = 250 x 14 squared / 8 = 250 x 196 / 8 = 6,125 ft-lbs
  2. No point load contribution
  3. Required section modulus = M / Fb (allowable bending stress)