In relation to a cofferdam, what is the definition of a toe?

In the context of a cofferdam, the term "toe" specifically refers to the vertical sheeting that extends below the excavation level. The purpose of the toe is to provide stability and reinforcement to the structure by anchoring it into the ground, which is essential for maintaining the integrity of the cofferdam during construction and while it is holding back water. This vertical sheeting plays a crucial role in preventing soil and sediment from eroding or collapsing into the excavated area, ensuring that the worksite remains safe and functional.

Other choices do not appropriately define the toe; for example, the horizontal sheeting at the top of the structure refers to a different component typically involved in the overall design of a cofferdam, while the angle of the sheeting or the horizontal base structure does not accurately capture the definition of the toe either. Understanding the function of these components helps clarify how a cofferdam is constructed and the importance of each part in maintaining stability and functionality.