What form of protection should be installed at intervals along excavation faces?

The use of protective barricades along excavation faces is crucial for ensuring the safety of both workers and the public. These barricades serve as physical barriers that can help prevent accidental falls and provide a clear demarcation of the hazardous area, reducing the risk of unauthorized access. They are typically designed to withstand impacts and provide a solid structure that clearly signifies the danger of the excavation area.

While plastic barriers, wooden fences, and netting may offer some level of protection or visibility, they are not as robust or reliable as protective barricades when it comes to securing an excavation site. Plastic barriers may not provide sufficient strength, wooden fences can be easily damaged or climbed over, and netting does not offer a solid barrier to prevent falls or entry into the area. Protective barricades are specifically designed for this purpose, making them the most effective choice for maintaining safety around excavation sites.