Send a correction, gap, or calculator request

The most helpful feedback is specific: the page URL, the exact input set, what result you expected, and whether the issue comes from geometry, unit handling, density, wastage, spacing, or interpretation. That kind of correction is far more actionable than a general note that a page feels wrong.

Requests for new calculators are also useful when they describe the real civil task behind the request. A good suggestion explains the shape, material, site process, or lab method that changes the calculation enough to deserve its own page.

The main contact route for corrections, policy questions, and support issues is support@civilengcalculators.xyz.