Embankment plots in the density log book are typically how long?

• A. Typically 500 feet
• B. Typically 1000 feet
• C. Typically 250 feet
• D. Typically 750 feet

Answer: (A)

A standard, representative segment length is used for embankment plots so density measurements reflect how the material is compacting along the line while keeping field work practical. 500 feet is the typical plot length because it provides enough distance to average out small local fluctuations and yield meaningful comparisons of density across the alignment, while still being manageable for the crew to test and document. Shorter plots might miss wider trends, and longer plots can blur localized deficiencies and complicate plotting density against station.