The maximum specified cover for bundle bars is 2 inches or the equivalent diameter of the bundle, whichever is minimum. Which option best expresses this rule?

• A. 2 inches
• B. 3 inches
• C. 4 inches
• D. 2 inches or the equivalent diameter of the bundle, whichever is minimum

Answer: (D)

When dealing with bundle bars, the concrete cover is limited by the smaller of two values: two inches or the bundle’s equivalent diameter. This ensures the cover isn’t too large for smaller bundles while not exceeding what is allowed for larger bundles. For example, if the bundle’s diameter is 1.5 inches, the maximum cover is 1.5 inches; if the bundle diameter is 3 inches, the maximum cover is 2 inches. The option that states exactly “2 inches or the equivalent diameter of the bundle, whichever is minimum” captures this rule, making it the correct expression. Fixed values like 2, 3, or 4 inches don’t account for the bundle size and thus aren’t accurate.