Each claim below has one active entry and, where available, a prequalified fallback. Public links pass through ProjectQty's protected resolver, which checks current reachability without accepting a URL from the visitor.
A measurement standard supports its stated conversion only. A manufacturer document supports only the named product, region, version, and field. It does not validate prices, structural design, installation, or a different brand.
One international foot equals exactly 0.3048 meters.
Product scope: GENERIC
Version scope: International foot; U.S. survey foot excluded
NIST Guide to the SI, Appendix B: Conversion Factors
Exact international-foot to meter conversion; U.S. survey-foot conversion is explicitly outside this claim.
Open verified sourceThe DSDATA Format, Appendix D: U.S. Survey Foot vs International Foot
Independent confirmation that one international foot equals exactly 0.3048 meters; U.S. survey-foot conversion remains distinct.
Prequalified fallback. No direct external link is published from this entry.
One international avoirdupois pound equals exactly 0.45359237 kilograms.
Product scope: GENERIC
Version scope: International avoirdupois pound
NIST Handbook 44 (2026): exact avoirdupois pound to kilogram conversion
Exact international avoirdupois-pound conversion; troy and apothecaries pounds are excluded.
Open verified sourceWeights and Measures Act 1985, section 1: pound definition
Independent statutory confirmation of the exact international avoirdupois-pound definition.
Prequalified fallback. No direct external link is published from this entry.
One U.S. liquid gallon equals exactly 231 cubic inches.
Product scope: GENERIC
Version scope: U.S. liquid measure; Imperial gallon excluded
NIST Handbook 44 (2026): exact U.S. liquid gallon definition
Exact U.S. liquid-gallon definition; Imperial and dry gallons are excluded.
Open verified sourceNorth Carolina General Statutes: U.S. liquid gallon definition
Independent statutory confirmation of the 231-cubic-inch U.S. liquid gallon.
Prequalified fallback. No direct external link is published from this entry.
One U.S. short ton equals exactly 2,000 avoirdupois pounds.
Product scope: GENERIC
Version scope: U.S. short ton; long ton and metric tonne excluded
NIST Handbook 44 (2026): exact U.S. short-ton definition
Exact U.S. short-ton definition; long ton and metric tonne are excluded.
Open verified sourceNorth Carolina General Statutes: short-ton definition
Independent statutory confirmation that the U.S. short ton is 2,000 avoirdupois pounds.
Prequalified fallback. No direct external link is published from this entry.
One roofing square represents 100 square feet of roof area.
Product scope: GENERIC
Version scope: North American roofing trade unit
ARMA Residential Asphalt Roofing Manual: roofing-square definition
North American roofing trade definition only; product bundle coverage remains manufacturer-specific.
Open verified sourceCanadian Roofing Reference Manual glossary: roofing square
Independent North American roofing trade definition; product bundle coverage remains manufacturer-specific.
Prequalified fallback. No direct external link is published from this entry.
A nominal board foot is the volume of lumber measuring 12 inches by 12 inches by 1 inch.
Product scope: GENERIC
Version scope: Nominal lumber measurement; dressed dimensions excluded
Softwood Lumber Products Export Charge Act: board-foot definition
Nominal board-foot definition for lumber; log-scale recovery conversions are outside this claim.
Open verified sourceUSDA Forest Service PPET units: board-foot definition
Independent nominal board-foot definition for lumber; empirical log-scale conversion factors are excluded.
Prequalified fallback. No direct external link is published from this entry.
A 40 lb bag of QUIKRETE Concrete Mix No. 1101 yields approximately 0.3 cubic feet.
Product scope: QUIKRETE Concrete Mix No. 1101-40
Version scope: Product data sheet revised October 2022
QUIKRETE Concrete Mix No. 1101-40 product yield
Approximate 0.3 ft³ yield for the 40 lb QUIKRETE Concrete Mix No. 1101-40 package only; not a generic bag-yield assumption.
Open verified sourceA 50 lb bag of QUIKRETE Concrete Mix No. 1101 yields approximately 0.375 cubic feet.
Product scope: QUIKRETE Concrete Mix No. 1101-50
Version scope: Product data sheet revised October 2022
QUIKRETE Concrete Mix No. 1101-50 product yield
Approximate 0.375 ft³ yield for the 50 lb QUIKRETE Concrete Mix No. 1101-50 package only; not a generic bag-yield assumption.
Open verified sourceA 60 lb bag of QUIKRETE Concrete Mix No. 1101 yields approximately 0.45 cubic feet.
Product scope: QUIKRETE Concrete Mix No. 1101-60
Version scope: Product data sheet revised October 2022
QUIKRETE Concrete Mix No. 1101-60 product yield
Approximate 0.45 ft³ yield for the 60 lb QUIKRETE Concrete Mix No. 1101-60 package only; not a generic bag-yield assumption.
Open verified sourceA 80 lb bag of QUIKRETE Concrete Mix No. 1101 yields approximately 0.6 cubic feet.
Product scope: QUIKRETE Concrete Mix No. 1101-80
Version scope: Product data sheet revised October 2022
QUIKRETE Concrete Mix No. 1101-80 product yield
Approximate 0.6 ft³ yield for the 80 lb QUIKRETE Concrete Mix No. 1101-80 package only; not a generic bag-yield assumption.
Open verified sourceSource order and replacement
- Public measurement, statutory, or standards authority for generic claims.
- Qualified trade or technical authority when its scope matches the claim.
- Official manufacturer labels or technical data sheets for named products only.
- A prequalified equivalent fallback when the active document cannot be opened.
- A paused default or result when no approved evidence trail remains.
Automated checks can detect reachability, redirects, dates, MIME changes, and evidence drift. They cannot invent a new technical value or approve a new manufacturer. Semantic changes remain subject to qualified review and tests.