How often are ladders required in a trench according to safety regulations?

Ladders are required in a trench according to safety regulations for every 25 feet of horizontal trench. This requirement is in place to ensure safe access and egress for workers, minimizing the risks associated with trenching operations. When workers are in a trench, having a ladder within this distance allows them to quickly exit the trench in case of an emergency or if they need to leave the work area. The regulation emphasizes the importance of safety in excavation sites, where the risk of trench collapse requires careful consideration of workers' safety and accessibility.

The other distances mentioned do not align with the established safety regulations for trenching and excavation work. While it may seem logical to require ladders at these intervals, only the 25-foot requirement has been standardized as part of safety protocols to protect workers in these potentially hazardous environments.