Calculadora de Deflexión de Viga Gratis
Calcula la deflexión máxima de una viga bajo carga. Verifica que cumpla con los límites permitidos.
Max Deflection
0.000 in
Max Deflection vs Beam Span
Fórmula
## Simply Supported Beam Deflection **Delta_max = 5wL^4 / (384EI)** Where w is the load per inch, L is the span in inches, E is the modulus of elasticity, and I is the moment of inertia. Common deflection limits are L/360 for floors and L/240 for roofs.
Ejemplo Resuelto
12 ft beam, 200 lb/ft load, E = 1,700,000 psi, I = 98 in^4.
- 01w = 200/12 = 16.67 lb/in
- 02L = 144 in
- 03Delta = 5 x 16.67 x 144^4 / (384 x 1,700,000 x 98)
- 04Delta = 0.283 in
- 05L/360 = 0.40 in; deflection is within limits.
Preguntas Frecuentes
What is L/360?
L/360 means the allowable deflection is the span divided by 360. For a 12 ft (144 in) span, the limit is 144/360 = 0.40 inches. This is the typical limit for floor beams under live load.
Where do I find E and I values?
E depends on the material (wood: 1.2-1.8M psi, steel: 29M psi). I depends on the cross-section; look it up in beam tables or calculate from the section dimensions.
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