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Structures

Beam Deflection Calculator

Estimate midspan deflection for a simply supported beam with central point load.

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About this calculation

Estimate midspan deflection for a simply supported beam with central point load. This page gives the formula, a direct calculator and practical context so the result can be checked rather than treated as a black box.

Common mistakes

Mixing units, using nominal rather than measured dimensions, omitting efficiency or friction factors, and applying theoretical results without an appropriate safety factor are the most common errors.

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