Structures that are heavy floor construction can be residential, commercial, or industrial, with concrete frames and may be up to twelve stories tall. This category includes highway bridges.

• A. Ultra
• B. Heavy
• C. Light
• D. Medium

Answer: (B)

This item is testing recognition of heavy construction based on frame type and typical height, with examples that include highway bridges. Structures described as having concrete frames with heavy floor construction up to about twelve stories tall fit the heavy category because the mass, stiffness, and load demands are substantial enough to require robust support, longer stabilization, and more careful shoring. Highway bridges are included here because they share the same characteristic of heavy load-bearing framing and substantial mass, even though they aren’t multi-story buildings. Lighter categories involve wood or light steel framing and lower heights, while ultra-heavy definitions cover even more massive or specialized infrastructure, and the medium category sits between light and heavy. So the description aligns with heavy construction.