After completing a proctor compaction density test for the same soil sample from the previous question, it was determined that the optimal moisture/density relationship to be used to properly compact this soil type is approximately 15%. Therefore, determine how many gallons per cubic yard of water would need to be added to bring the moisture content of the soil sample in the previous question to 15%?

Given:

• In-situ weight of soil sample = 150 lbs.
• Dried weight of soil sample = 134 lbs.
• Volume of the sample = 0.86 cubic feet
• Moisture content of the soil sample from previous question
• Desired moisture content = 15%

Step 3:

Convert your answer from lbs./cubic feet to gallons/cubic yard. Do not enter any symbols, units, and so on. Just enter numeric values.)