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What Can We Help You With?
Whether it’s a quick guide question or a detailed technical enquiry, here are the most common reasons people get in touch with us.
Guide Help
Not sure which guide to use, or getting an unexpected result? We’ll help you get the right answer for your project.
Report a Bug
Found something that isn’t working correctly on the site? Please let us know — we fix reported issues as a priority.
Suggest a Feature
Have an idea for a new guide, unit, or content topic? We build features based on what our users actually need.
Content Question
A question about one of our guides, standards references, mix ratios, or anything covered in our articles.
Technical / Engineering
A more specific question about concrete mix design, ACI codes, structural requirements, or material specifications.
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Frequently Asked Questions
Quick answers to the most common things people ask us before getting in touch.
Are all the guides on concretesmath.com/ free to use?
Yes — completely free, with no sign-up, no registration, and no subscription required. All guides and guides on concretesmath.com/ are free to use as many times as you need for any project, commercial or personal.
How accurate are the concrete guides?
Our guides use the same industry-standard formulas used by professional engineers and quantity surveyors. Results are accurate to 3 decimal places. We always recommend adding a 5–10% wastage buffer when ordering materials, as real-world conditions (uneven sub-base, spillage, compaction) always add some variance to the theoretical estimate.
Can I use concretesmath.com/ guides for commercial or professional projects?
Yes, our guides can be used for professional project planning and estimation. However, all structural design must be verified by a qualified structural engineer before construction. Our guides are provided as reference and estimation resources — they do not replace professional engineering design or site-specific geotechnical assessment.
I found an error in one of your guides. What should I do?
Please use the contact form above and select “Guide Bug” or “Content Question” as the topic. We take accuracy very seriously — all reported errors are reviewed by our team and corrected as quickly as possible. Please include the specific article or guide URL, the section where the error appears, and what you believe the correct information should be.
Do you offer bespoke guide development or white-label solutions?
We occasionally take on bespoke guide and resource development projects for construction companies, material suppliers, and engineering firms. If you’re interested in a white-label or custom guide solution, please use the contact form above and select “Partnership Enquiry” — we’ll get back to you with more information.
Can I request a new guide or resource?
Absolutely — we encourage it. Several of our most popular guides were built in direct response to user requests. Use the contact form and select “Feature Request.” Describe what you need the guide to do, what inputs you’d enter, and what result you need. We prioritise the most commonly requested features in our development roadmap.
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Your data is used solely to respond to your enquiry and is never shared with third parties, sold, or used for any marketing purpose. We do not add you to any mailing list unless you explicitly opt in. All form submissions are encrypted in transit. Please see our Privacy Policy for full details of how we handle personal data.
Are the standards references on concretesmath.com/ up to date for 2026?
Yes — all guides and standards references are reviewed and updated annually. Our ACI Standards Guide covers ACI 318-19 (the edition enforceable in most jurisdictions in 2026) and notes where new editions (such as ACI 318-25) are anticipated. We note the review date on each page. If you believe any specific reference is out of date, please let us know via the contact form.
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