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Simple beam deflection calculator
This page can be used to find the deflection, and also the maximum stress of a simply supported beam, the calculator always factors in the beams own weight and adds it to the loads you specify. Choose from Australian steel sections, UNIVERSAL BEAMS, PARALLEL FLANGE CHANNEL, UNIVERSAL COLUMNS, and Z/C PURLINS. Also the beam deflection of RHS can be found. The material type is limited to steel (Modulus of Elasticity 210 000 MPa), wood, and aluminium. All input values must be metric.
Beam Deflection & Max beam stress.
Deflection under own weight:
Deflection from load:
Deflection from continuous load:
Total deflection:
Maximum stress:
3.91 mm
32.01 mm
7.14 mm
43.06 mm
156.48 MPa
For custom sizes select, USE VALUES BELOW from section dropdown.
Leave the flange thickness, (wall thickness), blank to specify a solid.
The units must be in mm.
Beam deflection diagram.
5000 mm
700 N (70 kg)
0.05 N/mm (5 kg/m)
43.06 mm
Below is the raw, unrounded data
Modulus of Elasticity: 210000 (N/mm2)
Moment of Inertia: 271188 (mm4)
Perpendicular distance from the neutral axis: 38 (mm)
Material weight. Force per mm: 0.0273436 (N/mm)
Material: steel
Section: 76X38X1.6 RHS
Force of load: 700 N
Continuous load Force per mm: 0.05 N/mm
Beam deflection from beams own weight: 3.9073716995894 mm
Beam deflection from force at centre of the beam: 32.009364557265 mm
Deflection from a continuous load supported by the beam: 7.1449474458181 mm
The total deflection of this simply supported beam: 43.061683702672 mm
Maximum stress from the centre force: 122.60867000015 MPa
Stress from the beams own weight: 11.973437246486 MPa
Stress from the Continuous load: 21.894405357169 MPa
The total maximum stress in the beam: 156.4765126038 MPa