梁荷载计算器 — 公式

How to Calculate Beam Loading

Formula

Load per Linear Foot = (Dead Load + Live Load) × Tributary Width

Total Load = Load per Linear Foot × Span

Support Reaction = Total Load / 2 (for a uniformly loaded simple beam)

Tributary width is the distance from the beam centerline to the midpoint between the beam and the next parallel support on each side. This calculation assumes a uniformly distributed load on a simply supported beam.

计算示例

A 16 ft beam with 8 ft tributary width, 15 psf dead load, 40 psf live load.

  1. Total load = 15 + 40 = 55 psf
  2. Load per linear foot = 55 × 8 = 440 lbs/ft
  3. Total beam load = 440 × 16 = 7,040 lbs
  4. Reaction per support = 7,040 / 2 = 3,520 lbs