Static Load Test and Observation
At 5:23 in
WHY Retaining Walls FALL down - How Most people Build them Wrong
What happens here
After both boxes are filled with compacted sand (one with geogrid, one without) to the same height, carefully remove the cardboard boxes, leaving two freestanding sand columns. This reveals the initial structural integrity of each column. Then, begin applying static load by placing gym weight plates on top of each sand column. Start with smaller weights (e.g., 2.5 lb, 5 lb) and gradually increase the load, observing how each column responds. The column without geogrid will quickly show signs of collapse, while the geogrid-reinforced column should withstand significantly more weight before failure.
Goal: Demonstrate the increased load-bearing capacity of geogrid-reinforced sand columns.
Tools and materials
- Cardboard Box — Molds for the sand columns (to be removed)
- Gym Weight Plates — Applying static load to the sand columns
- Sand Columns — The objects being tested for stability
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