What is the purpose of silt curtain?

Silt curtains are devices that control suspended solids and turbidity in the water column generated by dredging and disposal of dredged material. Consequently, silt curtains are considered an integral and necessary part of the regulatory strategy for many dredging projects.

What is silt fence fabric?

Silt fences are temporary barriers intended for retaining sediment and controlling erosion on construction sites. These fences are made out of synthetic filtration fabric, usually geo-textile filter fabric, woven together to create sheets of material that offer incredible strength and a good level of permeability.

What is Type S silt fence?

Description: S-Fence is a patented high performing, low total cost alternative to silt fence. It reduces sedimentation and provides erosion control on or around construction sites.

How do you install turbidity barriers?

Silt Curtain Installation & Maintenance Procedures

  1. Step 1 – Laydown & Assemble. Choose an area at the water’s edge with sufficient area to fully lay out at least two sections of turbidity barrier.
  2. Step 2 – Unpacking.
  3. Step 3 – Deployment.
  4. Step 4 – Anchoring.
  5. Step 5 – Monitoring.
  6. Step 6 – Recovery.

What is a silt trap?

A silt trap is a method of preventing silt from entering and damaging a soakaway, attenuation or sewer system. These systems are designed to collect and remove surface water, either by emptying it into the sewer system, or by allowing it to drain back into the ground below.

What can I use instead of a silt fence?

ERTEC S-Fence™ is a more effective and lower total cost alternative to traditional silt fence. S-Fence is installed around job site perimeters or at the base of slopes to contain and control sediment during storm events.

Does silt fence let water through?

Water can seep through the silt fence fabric, but the fabric often becomes “blocked off” with fine soil particles (all sediment-retention devices have this challenge, and none of them “filter” storm water for very long).

What is a silt screen?

Answer: The Silt Screen, also known as a Silt Barrier, can refer to two different types of barriers, one for land and one for water. While these turbidity curtain barriers will differ in their construction, both can be effectively used as a form of sediment containment on a construction site.

How do you install floating silt curtains?

Step-By-Step Instructions for Connecting Silt Curtains

  1. Step 1: Attach the Bottom Chain of the Silt Barrier.
  2. Step 2: Slide Together Aluminum Connectors. Aluminum extrusion end connectors are typically used on most Type 2 or Type 3 silt curtains to help connect sections together.
  3. Step 3: Attach Grommet Eyes of the Barriers.

How do you remove silt curtains?

The silt curtain shall be removed by pulling it toward the construction area to minimize the release of trapped sediment. Both the top and bottom lines shall be pulled together like a parachute to pull the sediment ashore. Alternatively, the silt curtain may be furled and then removed, using a boat.

What is a silt trap made of?

A basic silt trap can be built with brick or pre-cast concrete, however prefabricated silt traps are available along with options for more advanced filtration systems that act as additional barriers to the silt. Smaller sized prefabricated silt traps contain a basket which collects the silt in the sump.