What is the primary purpose of a trench ladder in plumbing installations?

The primary purpose of a trench ladder in plumbing installations is to provide safe egress. When workers are excavating or working in trenches, the depth can pose significant risks, including falls. A trench ladder allows workers to safely enter and exit the trench, ensuring they have a secure way to climb out if needed. This safety feature is essential in preventing accidents and injuries when working at various depths in a trench context.

While preventing soil erosion, supporting water flow, or increasing depth might be relevant in certain aspects of plumbing or construction, they do not pertain to the specific function of a trench ladder in ensuring worker safety during excavation. The focus on safe access reflects a strong adherence to safety standards and regulations that govern excavation work, highlighting the importance of proper equipment in maintaining a safe work environment.