Silt Fence barriers are considered what type of protection for area drains?

Silt Fence barriers are considered what type of protection for area drains?

• A. Rough straw barriers
• B. Rock barriers
• C. Filter bags
• D. Silt Fence barriers

Answer: (D)

Protecting area drains means stopping sediment from entering the storm drainage system. A silt fence barrier acts as a sediment-control device that intercepts and traps sediment-laden runoff before it reaches inlets. The fabric slows the flow and allows sediment to settle, providing perimeter protection around drains and inlets across the site. This approach is more effective for safeguarding area drains from fine sediment carried by sheet flow than rough straw barriers or rock barriers, which don’t filter sediment as reliably, or filter bags, which target the inlet itself rather than creating a broader protective perimeter.

Protecting area drains means stopping sediment from entering the storm drainage system. A silt fence barrier acts as a sediment-control device that intercepts and traps sediment-laden runoff before it reaches inlets. The fabric slows the flow and allows sediment to settle, providing perimeter protection around drains and inlets across the site. This approach is more effective for safeguarding area drains from fine sediment carried by sheet flow than rough straw barriers or rock barriers, which don’t filter sediment as reliably, or filter bags, which target the inlet itself rather than creating a broader protective perimeter.