In the EF example, the local elevation used is?

• A. 6,320 ft
• B. 6,000 ft
• C. 5,000 ft
• D. 6,500 ft

Answer: (A)

When working with elevations, you anchor every calculation to a known reference elevation, the local benchmark, and then apply the measured height differences to reach other points. In the EF example, the reference point’s elevation is given as 6,320 ft, so this value becomes the baseline used for all subsequent elevations. This ensures consistency with the chosen datum and correctly propagates the vertical measurements. The other numbers don’t match the benchmark specified in the EF example, so they wouldn’t produce the correct elevations.