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Do I Need a Proctor?

November 3rd, 2023 | 1 min. read

By Savannah Doctor


If you have scheduled or are needing a density test, a proctor is required. A proctor is a sample of material at your site and must be collected in order for us to determine if job site requirements are met. 

It is recommended that a proctor is collected as soon as soil is on site in order to provide rapid compaction test results. It takes a minimum of 48 hours for us to process a proctor sample based on our lab backlog. 


Legacy Engineering's lab, featuring our compaction machine 


  1. Valid compaction test results 
  2. To receive your final report as fast as possible 
  3. Communicate if you passed or failed 
  4. Accurate final report will uncover the bearing capacity of your foundation 
  5. Confirm that your soil is strong to avoid settlement and maintenance 

At Legacy Engineering, one method of soil density testing is a low radiation level nuclear density gauge. This method tests wet and dry densities and the soil’s moisture content by a short test. Click here to view a video of one of our field technicians doing a density test at a Circle K in St. Augustine Florida. 

Although it is possible that the proctor and density tests are taken at the same time, there will be a delay in the final report. First, the lab must run the proctor so we can compare the densities in the field to the proctor number and determine if the locations tested met job site specifications. Without a proctor, there is no way for us to determine if the locations tested meets your job site requirements.


Savannah Doctor

Hi! I am Savannah Doctor, Content Manager at Legacy Engineering. I have a Bachelor's degree in Digital Media from the University of Central Florida. In my free time, I like to watch and play sports, spend time at the beach, and family time is essential!