Concrete spread footing projections shall be at least _______ and shall not exceed the thickness of the footings

Concrete spread footing projections shall be at least _______ and shall not exceed the thickness of the footings

• A. 2 inches
• B. 4 inches
• C. 6 inches
• D. 12 inches

Answer: (A)

The idea here is that concrete spread footing projections must have a practical, uniform minimum while not eroding the footing’s structural thickness. A two-inch minimum ensures there is enough projection to be meaningful—for example, to provide a slightly extended edge that resists chipping and gives space for details or attachments—without tying the requirement to a specific footing size. At the same time, the projection cannot exceed the actual thickness of the footing, preserving the footing’s cross‑section and its bearing capacity. Larger fixed minimums (like four, six, or twelve inches) would not fit all footings and could unnecessarily weaken or complicate designs. So two inches is the universal minimum, with the maximum limited by the footing’s thickness.

The idea here is that concrete spread footing projections must have a practical, uniform minimum while not eroding the footing’s structural thickness. A two-inch minimum ensures there is enough projection to be meaningful—for example, to provide a slightly extended edge that resists chipping and gives space for details or attachments—without tying the requirement to a specific footing size. At the same time, the projection cannot exceed the actual thickness of the footing, preserving the footing’s cross‑section and its bearing capacity. Larger fixed minimums (like four, six, or twelve inches) would not fit all footings and could unnecessarily weaken or complicate designs. So two inches is the universal minimum, with the maximum limited by the footing’s thickness.