Which structural category typically includes office, commercial, or industrial buildings and may include highway bridges?

• A. Heavy Frame
• B. Light Frame
• C. Open Web
• D. Suspension

Answer: (A)

Understanding how structural frame categories map to typical building types helps here. Heavy-frame construction uses large, robust members (often steel or reinforced concrete) designed to carry heavy loads and resist bending across multi-story spaces. That makes it the typical choice for office, commercial, or industrial buildings, where the structure must support substantial occupancies and equipment. It also aligns with highway bridges, which rely on similarly strong framing to handle heavy loads and long spans.

In contrast, light-frame is suited to smaller, lighter structures (like residential or some small commercial projects), Open Web refers to a floor/roof joist system rather than the overall building frame, and Suspension is a bridge type used for long spans rather than standard office or industrial buildings. So the category that fits the description is heavy frame.