Terms of Use

Using the site

The calculators and guides may be used for learning, estimation, and preliminary planning. Users must provide suitable inputs and verify results before making decisions or carrying out work.

Tool limitations

Content and results are not an approved engineering design, professional advice, or a guarantee of suitability for a particular project. Applicable codes, specifications, and site conditions must be reviewed with a qualified professional.

Accounts and content

Users are responsible for protecting login details and for information they save. The site must not be misused, disrupted, or copied in a way that infringes rights.

Changes and contact

Tools and these terms may change as the site develops. Questions: [email protected].