Rain Control Test

Last week, 3 tests were preformed, 2 pressure and 1 rain test. Unfortunately measurement errors made during the pressure tests that made the data unusable. The rain test data, however, was viable. The test preformed without pressure or an upper shelf on the slope. The rate of rain was 1.5 inches per hour and the slope was subjected to the rain simulation for 30 minutes. Measurements showed that that the angle of the left slope decreased by 8.8% and the right side angle of the slope by 9.4%. Qualitative investigation showed that there was erosion, but on very small, and near impossible to measure scale. This team has the ability to perform a test that will simulate approximately 6.5 inch/hour rain. this simulation may be subjected to the slope.  

Week 8 Lab

The goal for the lab today is to test the toe wall and grid system under pressure to see if there is a difference from the control data.

First Successful Applied Load Test

This week in lab we were able to get results from our applied load testing. After 30 minutes, there was no visible change but the calculations prove shifting took place. Initially, the angle was calculated to be 35.8 degrees. The calculated angle after applying the bricks was 32.5 degrees. A decrease in angle is consistent with soil degradation because the slope becomes gradually flatter.

Week 7 Lab

For today's lab, we are testing the rain simulator again to get a slower rate and to make a slope that will collapse under the pressure of the weight

Applied Load Test 2

During Week 6 lab we performed another applied load test. This time, the soil was dry and a new slope was built. The measurements for the initial slope are shown in the picture:

After 30 minutes of applied pressure, the calculations gave an angle greater than the initial angle.

This is inconsistent with predicted soil erosion. There could have been errors in measurements that caused this inconsistency. For improvements, we can make the initial slope steeper. We will continue to test. Our hope is to find a slope that will fail so that we can implement our solutions to stabilize it.

Week 6 Lab goals

The main goal of the lab today is to get the rain rate down and getting the consistency of it. We are also testing the slope under pressure to see how it reacts under pressure

Group Meeting on May 2nd

Meeting goals for tonight are to figure out why some images are not showing up on the site, finish the blog for the blog check, final report drafting and when and where to test next.