Terms of Use

Last updated: July 2026

Calculator Estimates — For Planning Purposes Only

All calculators on DIY Project Calc provide estimates for planning and educational purposes only. Results are based on standard industry formulas and typical material dimensions, but every real-world project involves variables that cannot be captured by a web tool — soil conditions, local building code amendments, actual lumber dimensions (which differ from nominal), site access constraints, and more. Use the estimates as a starting point and always verify dimensions on-site before purchasing materials.

No Professional Advice

Content on this site — including guides covering structural loads, electrical sizing, foundation design, and building code references — is educational and informational. It does not constitute professional engineering, architectural, or contracting advice. For decisions involving the structural integrity of a building, electrical safety (including generator backfeeding prevention), or compliance with local building codes, consult a licensed professional engineer, electrician, or contractor who can evaluate your specific site conditions.

Accuracy of Information

We strive for technical accuracy in all content. Formulas, code references, and material specifications are verified against published engineering standards at the time of writing. However, building codes are updated on cycles, and local jurisdictions adopt amendments at different rates. Always check with your local building department before relying on code references found on this site.

Affiliate Links

This site contains affiliate links to Amazon.com and other merchants, as well as lead-generation links to Dakota Contractor Pros. Clicking these links and completing a purchase or quote request may result in a commission paid to DIY Project Calc. Product references are based on utility and suitability for the project, not on commission rate.

Limitation of Liability

DIY Project Calc and its operators are not responsible for damages, injuries, or financial losses resulting from the use of the calculators or the information presented on this site. Material selection, construction techniques, and compliance with local building codes are the sole responsibility of the owner, contractor, or design professional managing the project.

Intellectual Property

All content on this site — including calculator code, written guides, diagrams, and design — is original and protected by copyright. You may reference our content with attribution. Large-scale reproduction, automated scraping, or republishing of our guides or calculators is prohibited without permission.

Changes to These Terms

We may update these terms at any time. Changes will be posted to this page with a revised date. Continued use of the site after changes constitutes acceptance of the updated terms.

Contact

For questions about these terms, use the contact form on Dakota Contractor Pros.