What is one condition for a proper installation of an anchor block in a trench?

A proper installation of an anchor block in a trench is essential for ensuring stability and effectiveness, especially when it comes to supporting various drainage applications. One key condition is that the anchor block must extend below the trench base for a specific distance, which in this case is 150 mm.

This requirement is crucial as it helps to provide a solid foundation for the anchor block, preventing movement or displacement that could compromise the integrity of the drainage system. By extending below the trench base, the anchor block ensures that it is secured within undisturbed soil, enhancing resistance against the forces of erosion or buoyancy that may occur due to water flow.

Additionally, deploying the anchor block at this depth mitigates the risk of surface issues, such as freezing and thawing cycles, that could impact materials at shallower depths. This practice contributes to the long-term durability and operational efficacy of the drainage system.