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Composite section builder

Combine rectangles and circular areas, including holes, into one section.

Result

Enter your values, then calculate.

Calculation method

Centroid = ΣAi·coordinate/ΣAi; inertia = Σ(Ilocal + Ai·offset²). Holes contribute negative area and inertia.

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<iframe src="https://engineerbench.com/embed/composite-section-builder/" title="Composite section builder calculator by EngineerBench" width="100%" height="820" style="border:1px solid #d7dde5;border-radius:8px" loading="lazy" sandbox="allow-scripts allow-same-origin allow-popups allow-popups-to-escape-sandbox" allow="clipboard-write" referrerpolicy="no-referrer"></iframe>
<p><a href="https://engineerbench.com/calculators/composite-section-builder/" rel="nofollow">Calculator by EngineerBench</a></p>

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