MATERIAL FIELD
Contact Material Field
Help improve the calculators with a reproducible correction, stronger source, clear workflow request, or detailed technical report.
Material Field welcomes specific, evidence-based feedback. Choose the category below and collect the relevant details before sending a message once the production contact address is published.
Formula correction
Report arithmetic, unit conversion, rounding, density, or result-label problems. Include a reproducible example so the issue can become an automated regression test.
Source suggestion
Recommend a stronger government, standards, manufacturer, industry, or university source. Provide the direct URL, publication date, relevant table or section, and why it applies.
Calculator request
Describe the real project decision, required inputs, purchasing unit, expected result, and who would use it. Requests based only on a keyword are less useful than a clear workflow.
Technical problem
Include the page URL, browser and device, action attempted, displayed message, and whether the problem occurs without extensions or private browsing.
What to include with a correction
- Exact calculator URL and date used
- Every input value and its unit
- The displayed result and your expected result
- Your calculation steps or a direct supporting source
- Whether your figure is loose, compacted, wet, dry, or product-specific
This information distinguishes a software defect from a legitimate difference in material density, product yield, supplier rounding, or project specification.
What we cannot provide
We cannot approve a design, choose slab or pavement thickness, diagnose site conditions, prepare a bid, recommend a local contractor, interpret regulations, or guarantee how much a supplier should deliver. For those decisions, contact a qualified local contractor, engineer, building department, or material supplier.
Response expectations
Formula defects and credible source corrections receive priority. Feature requests are evaluated for distinct user value and available evidence. A response or implementation timeline is not guaranteed, and urgent construction decisions should never wait for an email response from this website.
Before reporting a discrepancy, review the methodology and source notes. Use of the site remains subject to the Terms of Use.