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Beam Deflection

Calculate midpoint deflection of a simply supported beam. Central point load. Free, accurate, no sign-up.

๐Ÿ“– Read the complete Beam Deflection guide โ†’

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Max Midpoint Deflection

Formula

ฮด = PLยณ รท (48EI) for central point load on simply supported beam

Example

10kN, 6m span, EI=1000 โ†’ ฮด = 45mm

Frequently Asked Questions

What is EI (flexural rigidity)?

E is elastic modulus ร— I is moment of inertia. Measures stiffness of the beam.

Typical span/deflection limit?

L/360 for floors, L/250 for general structures. Verify with an engineer.

When does this formula apply?

Only for simply supported beams with single central point load.

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