Structural Load Calculator

Inputs

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Code and element
Floor loads
mm
kg/m³
kPa
kPa
Beam
m
m
Uniform load on a simply supported beamw = 43.07 kN/mspan 5 mmyconstructioncalculator.comNot to scale
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Results

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Line load on the beam
43.07kN/m
End reaction (simply supported)107.7 kN
Maximum bending moment (wL² ÷ 8)134.6 kN·m
Slab self-weight3.68 kPa
Dead load D (self-weight + finishes)5.18 kPa
Live load L2.00 kPa
Factored load per area10.77 kPa

Preliminary loads for sizing only. Add the beam self-weight, check other load cases and continuity, and have a structural engineer design the member.

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Working
  1. Self-weight = 0.150 m × 2,500 kg/m³ × 9.81 ÷ 1,000 = 3.68 kPa; D = 3.68 + 1.50 = 5.18 kPa
  2. IS 456 / IS 875: 1.5(D + L) → 10.77 kPa
  3. Line load w = 10.77 × 4.00 m = 43.07 kN/m
  4. Reaction = wL ÷ 2 = 107.7 kN; moment = wL² ÷ 8 = 134.6 kN·m (span 5.00 m)

Results are estimates for planning and material ordering only. They are not a substitute for structural design or approval by a qualified engineer. Read the full disclaimer.

Structural Load Calculator byMy Construction Calculator: free construction calculators with the working shown.