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Concrete & Foundations Review Desk

The review scope behind every concrete and foundation calculator on Buildcalchub — how mix, yield, slab thickness and footing geometry are checked, and against which published ACI, ASTM and IRC documents.

At a Glance

  • Scope: Concrete & Foundation
  • What is reviewed — cubic-yard yield math, bag-count conversions, PSI and mix-class selection, slab and footing dimensions, rebar spacing, and cure-time tables
  • Who does it — Buildcalchub is maintained by a single editor, Sarah Miller. “Review desk” names a documented review scope and its checklist, not a separate staff member or a claimed professional credential
  • Reference basis — published ACI, ASTM and ICC documents, cited inside the Sources block on every page in this scope

What This Page Is For

A concrete quantity that is wrong does not just waste money — a shortfall mid-pour is a cold joint, and an over-order is dead load nobody designed for. So this scope is reviewed against published documents rather than opinion, and the procedure is written down here so you can repeat it yourself.

The Four Checks Every Page in This Scope Passes

  • 1. Methodology — Is the right volume model used for the element? Slab-on-grade, footings, columns, cylinders and blocks each reduce to length × width × depth with the correct waste allowance; a page that borrows another element’s factor is corrected before publishing.
  • 2. Calculation logic — Does the yield match the stated mix? 80 lb of dry mix yields about 0.60 ft³, 60 lb about 0.45 ft³, dry-set mortar about 0.54 ft³; ready-mix is quoted in cubic yards with a 1½% short-load convention. Every worked example on the page must recompute from the page’s own formula, including the unit conversion between ft³ and yd³.
  • 3. Field assumptions — Are the design strengths and dimensions realistic for residential and light-commercial work? Compressive strength is discussed as a specified class (4,000 psi typical for driveways, 3,000 psi for interior slabs on grade) with ACI 211.1 proportioning logic behind it, never as a guarantee. Slab thickness, sub-base depth and footing bearing follow the IRC and the cited ACI guidance, with local variance flagged rather than averaged away.
  • 4. Price calibration — Ready-mix, bag and pump figures are shown as 2026 US regional bands, each labelled with its source class, and each page states that a supplier ticket governs the final number.

Standards This Scope Reviews Against

  • ACI 318 — Building Code Requirements for Structural Concrete: the reference for structural reinforced-concrete decisions
  • ACI 332 — Residential Code Guide for Concrete: how the IRC reads concrete prescriptively for homes
  • ACI 211.1 — Standard Practice for Selecting Proportions for Normal, Heavyweight and Mass Concrete
  • ACI PRC-213 — guide ranges for structural lightweight aggregate concrete, used by the weight calculator
  • ACI 117 — tolerances for concrete construction, used when a page rounds a dimension
  • ASTM C31 / C39 — field-casting and compressive-strength testing of cylinders
  • ASTM C138 — unit weight of concrete, used by the concrete-weight calculator
  • ICC International Residential Code — prescriptive footing depth, slab and foundation-wall provisions for one- and two-family dwellings

What This Desk Does Not Do

  • It does not hold a professional engineering licence, and no calculator here is a stamped structural design. Reinforced and seismic members need a licensed structural engineer and project-specific calculations; see the disclaimer.
  • It does not price or bid your pour. For a real project, retain a licensed contractor in your jurisdiction.
  • It does not review asphalt, aggregate or landscaping content. Those sit with the Asphalt & Aggregates and Landscape & Hardscape desks, and concrete pages carry no other byline.

Pages Under This Scope

Concrete calculators and their guides each carry a reviewer byline pointing here plus a dateReviewed stamp. Useful entry points: Concrete Calculator, Cement Calculator, Concrete PSI Guide and How Deep Should Footings Be?.

Corrections

If a yield, mix class, dimension or cure figure on a concrete page looks wrong, send the page URL plus the standard you are comparing it against to contact@buildcalchub.net. Corrected pages are republished with a fresh review stamp. That is the only reviewer credential this site claims: an open, reproducible checklist and a public correction path.