What is the method number for the Modified Proctor?

What is the method number for the Modified Proctor?

• A. FM 1 T-180
• B. AASHTO T-99
• C. ASTM D698
• D. AASHTO T-180

Answer: (A)

In soil compaction testing, the Modified Proctor is the higher-energy version used to determine maximum dry density at greater energy input. Its method designation varies by reference, and in many practice manuals the Modified Proctor is identified as FM 1-T-180. That’s why this option is the best match for the Modified Proctor method number. The other codes refer to the Standard Proctor or other standard bodies (ASTM D698, AASHTO T-99, AASHTO T-180), which correspond to different tests or standards, not the Modified Proctor in this context.

In soil compaction testing, the Modified Proctor is the higher-energy version used to determine maximum dry density at greater energy input. Its method designation varies by reference, and in many practice manuals the Modified Proctor is identified as FM 1-T-180. That’s why this option is the best match for the Modified Proctor method number. The other codes refer to the Standard Proctor or other standard bodies (ASTM D698, AASHTO T-99, AASHTO T-180), which correspond to different tests or standards, not the Modified Proctor in this context.