Day 4: Pounding sand...again

A short post today - more of the same as yesterday. The 3 foot deep hole was filled with about 1 foot of soil at a time. Each of these fills is called a lift. The foot of soil was compacted a few inches, then another lift was applied and compacted. The geotech engineer showed up for another moisture-density test after approximately 2 feet of lifts.

We passed the test and started filling up the remainder of the hole and leveling out the entire subgrade. Here is a vid of me driving the compactor (maximum speed, 50 feet per minute :-)

At the end of the day, the full subgrade for the concrete slab is really beginning to take shape. Here's a pic from where the West entry will be.

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