What are whales in the context of trench support?

In the context of trench support, whales refer to horizontal braces that are used against sheeting, which helps to stabilize the sides of the trench. These braces are crucial in preventing the walls of a trench from collapsing, especially in deeper excavations where the risk of soil movement is higher. By applying pressure outward against the sheeting, whales effectively distribute the forces exerted by the surrounding soil, ensuring a safer working environment for construction or utility work.

This terminology is commonly used in the field of excavation and construction safety, where maintaining the integrity of trench walls is vital to protect workers from cave-ins or landslides. The application of horizontal braces complements other trench support systems, enhancing their effectiveness and overall safety.