What is a benchmark?

What is a benchmark?

• A. A standard unit of measurement for timber
• B. A label for energy efficiency rating
• C. A known elevation of a plot plan
• D. A type of fastener used in masonry

Answer: (C)

A benchmark is a fixed reference point with a known elevation used on site plans to establish and check all other elevations. This reference lets you set grade lines, verify drainage, and ensure that finished elevations align with the project design. In fire inspections and construction planning, having a reliable benchmark helps determine where features like exits, ramps, and access routes should be placed to meet codes and ensure proper performance. The other options describe unrelated ideas—timber measurement units, energy efficiency labels, or masonry fasteners—so they don’t describe a fixed elevation reference on a plot plan.

A benchmark is a fixed reference point with a known elevation used on site plans to establish and check all other elevations. This reference lets you set grade lines, verify drainage, and ensure that finished elevations align with the project design. In fire inspections and construction planning, having a reliable benchmark helps determine where features like exits, ramps, and access routes should be placed to meet codes and ensure proper performance. The other options describe unrelated ideas—timber measurement units, energy efficiency labels, or masonry fasteners—so they don’t describe a fixed elevation reference on a plot plan.