Type 3 Turbidity Curtains

The Type 3 Turbidity Curtain (or Silt Barrier) is a heavy-duty sediment control system engineered for fast-water environments, including rivers, tidal zones, and harbors with currents exceeding 3 knots. Designed to meet DOT and federal compliance standards, these curtains utilize 18 oz or 22 oz PVC material—available in permeable monofilament or impermeable options—to create secure containment areas for silt and suspended solids. Key technical features include 5/16” vinyl-sheathed galvanized steel cables, square buoyancy floats (8″ or 12″), and ASTM universal slide connectors for maximum structural integrity during dredging, shoreline restoration, and marine construction.

Type 3 DOT Permeable Turbidity Curtain

  • Float Size: 8″ Square Floats
  • Material: 18 oz. Impermeable PVC w/ permeable monofilament filter fabric
  • Top Cable: 5/16” Galvanized Steel Cable Sheathed in Vinyl
  • Ballast: 5/16” Galvanized Steel Chain
  • Reinforced Grommet Section Connectors
  • Hardware: Top Stress Plates with Grommets, Corner Plates
  • Anchor Point: Every 50’ to 100’

Download Specs

Type 3 Heavy Duty (HD) Impermeable

  • Float Size: 12″
  • Material: 22 oz. PVC Impermeable Material
  • Top Cable: Dual 5/16″ galvanized steel cable (above & below float)
  • Ballast: 3/8″ Galvanized Steel Ballast Chain
  • Connectors: ASTM Universal Slide Connectors
  • Hardware: Stress Plates, Grommets, Corner Plates
  • Anchor Point: Every 50’ to 100’

Download Specs

Type 3 Heavy Duty (HD) Permeable Turbidity Curtain

  • Float Size: 12″
  • Material: 22 oz. PVC w/ Monofilament Fabric
  • Top Cable: 5/16” Galvanized Steel Cable Sheathed in Vinyl
  • Ballast: 3/8″ Galvanized Steel Ballast Chain
  • Connectors: ASTM Universal Slide Connectors
  • Hardware: Stress Plates, Grommets, Corner Plates
  • Anchor Point: Every 50’

Download Specs

Anchoring Options

  • Anchor Kits: Anchoring is crucial for the success of your project. Without proper anchoring your Turbidity Barrier will fail.
  • Tow Bridles: Tow Bridles help distribute weight and prevent damage during deployment and adjustment.
  • Accessories are an important component for the silt curtain installation. Click the link above to Learn more about these Type II silt curtain accessories, their specs, and uses. View our Ground Anchor Installation and Silt Curtain Anchoring Instructions.

Please contact us for more information on anchoring and accessory options.

Type 3 Turbidity Curtains

Type 3 Turbidity Curtains / Silt Barriers

The Type 3 Turbidity Curtain (or Silt Barrier) is a heavy-duty sediment control system engineered for fast-water environments, including rivers, tidal zones, and harbors with currents exceeding 3 knots. Designed to meet DOT and federal compliance standards, these curtains utilize 18 oz or 22 oz PVC material—available in permeable monofilament or impermeable options—to create secure containment areas for silt and suspended solids. Key technical features include 5/16” vinyl-sheathed galvanized steel cables, square buoyancy floats (8″ or 12″), and ASTM universal slide connectors for maximum structural integrity during dredging, shoreline restoration, and marine construction.

Type 3 Silt Barrier/ Turbidity Curtain Product Options:

  1. Type 3 DOT
  2. Type 3 Heavy Duty (HD) Impermeable
  3. Type 3 Heavy Duty Permeable (HD Perm)

*Click to download specifications of each curtain above

FEATURES

  • 8″ or 12″ floats

  • Top tension cables

  • ASTM universal slide connector options/top cable connector

  • Corner plates

  • Permeable or Impermeable

  • 18 oz and 22 oz material options

  • 5/16″ + 3/8″ + ballast chain

Type 3 Silt Barrier Applications

  • Designed for fast water, waves, or demanding conditions
  • Dredging Sites
  • Remediation Projects
  • Long-Term Projects
  • Shoreline Restoration
  • DOT Road & Bridge Repair
  • Pipeline Construction
  • Projects in Bays and Harbors
  • Coastal or Marine Construction
  • Pile Driving
  • Areas Severely Affected by Wind or Wav