Purpose

This site is a quick reference for people working in architecture and construction. It is provided for general information and education only.

No professional advice

• Nothing on this site is architectural, engineering, legal, construction, or other professional advice
• Use of the site creates no professional, advisory, or client relationship with anyone
• Design, specification, and construction decisions belong to the licensed professionals responsible for each project
• Structural, fire and life safety, egress, electrical, plumbing, mechanical, and accessibility decisions must be made and checked by qualified, licensed professionals

Accuracy and currency

• The content was written with generative AI, working from public sources listed at the end of each page. AI systems make mistakes, and sources can be wrong, incomplete, or out of date
• Pages may contain errors, omissions, outdated information, or statements that do not apply to a particular project
• Codes, standards, products, prices, and regulations change. A page reflects only the editions and information available when it was written
• Gaps and unverified details were left out of pages, so absence of a fact does not mean it does not apply
• The site is a work in progress. Pages may be added, changed, or removed at any time without notice

Codes and standards

• Pages summarize and paraphrase codes and standards. They are not the code or standard and do not replace it
• Citations name the edition they were checked against. The edition adopted by the project jurisdiction, with its local amendments, governs
• Interpretation and enforcement of codes belong to the authority having jurisdiction. Confirm requirements with it before design, permitting, and construction
• Zoning and land-use rules are local. General descriptions on this site do not reflect any specific jurisdiction

Products, manufacturers, and costs

• Properties, sizes, ratings, and performance values are typical or general. Actual values vary by product, grade, and manufacturer
• Manufacturer instructions, listings, and test reports for the specific product govern
• Manufacturers and trade associations are named as examples. A mention is not an endorsement or recommendation
• Cost figures, where given, are rough, national, and indicative only. They are not estimates for any project
• Trademarks and brand names belong to their owners

Third-party content

• Links go to sites the operators do not control. Their content, availability, and accuracy are not guaranteed, and a link is not an endorsement
• Images are credited in each page's Sources and are used under the licenses stated there
• Sources are cited for reference. Their rights remain with their owners

No warranty

The site and its content are provided "as is" and "as available," without warranties of any kind, whether express or implied, including accuracy, completeness, reliability, currency, fitness for a particular purpose, and non-infringement.

Limitation of liability

To the fullest extent permitted by law, the operators and contributors of this site are not liable for any loss, damage, claim, cost, or expense of any kind, including direct, indirect, incidental, consequential, special, or punitive damages, property damage, personal injury, design or construction defects, code violations, project delays, or lost profits, arising from the use of, or inability to use, this site or its content, or from reliance on it. Nothing here excludes or limits liability that cannot be excluded or limited under applicable law.

Your responsibility

By using this site you agree that you use it at your own risk and that you are responsible for independently verifying any information before acting on it.

Corrections

Reports of errors or problems are welcome through the feedback form on the Home page. Corrections are made when time allows, and a report does not create any obligation to correct, update, or respond.

Changes

This disclaimer may be changed at any time. Continued use of the site means you accept the current version.