You are a construction engineer and one of your clients calls and wants to know what excavation support system to select for their project. They inform you that the water table is relatively high (above the depth of the excavation), the project is in a rural area, the depth of the excavation must be 20-25 feet, and the foundation walls will be constructed separately from the excavation support system. There are no adjacent buildings. Briefly justify the excavation support system that you would p