Intrasoil Grid Phase 1

This weekend, a few of the grid designs were tested under applied pressure. The first tested was our very initial design, simply structural squares. A photo can be seen below:

The first test resulted in failure after less than a minute due to the container being bumped. The next test was successful and ran for 30 minutes with the bricks used as applied pressure. Measurements were taken before applying pressure, immediately after, and after the 30 minute time interval. The angle from the first stage to second had a 6.22% increase. This may be due to the compression of the soil as the bricks were laid or from sliding of the soil. The change between immediately after and after 30 minutes was a 6.27% decrease. 

A decrease shows that the soil eroded. This may have to take into the account the change in slope as a result of putting the grid in place. Testing on these changes have been done and will be added to the blog in coming posts. This angle decrease is a larger percent from that of the toe wall. Multiple structures of the grid will be tested in the coming week.