How should the installation of a support system be conducted in relation to trench excavation?

The correct approach to installing a support system in relation to trench excavation is that it must be closely coordinated with the excavation. This is crucial for ensuring the safety and stability of the trench. Coordinated efforts during the excavation process allow for timely installation of the support system, which is designed to prevent soil collapse and protect workers within or near the trench.

When the excavation and support system installation are synchronized, it enables operators to monitor the conditions of the soil and make necessary adjustments to the support system as the trench is being dug. This proactive strategy significantly reduces the risk of accidents and ensures adherence to safety regulations.

In contrast, approaches like conducting the support installation independently or after the trenching is completed can lead to serious safety hazards. Delaying the support installation may leave the trench vulnerable to collapses, posing a risk to workers involved. Similarly, having separate teams with no communication can cause confusion and operational delays, further endangering safety. Hence, close coordination between excavation activities and support system installation is paramount.