• Type 3 turbidity curtain installed around a marine construction area at Pearl Harbor, providing sediment control and water quality protection near a floating crane and dry dock.

Type 3 Turbidity Curtains

Available Options

  • Type 3: DOT Permeable Turbidity Curtain
  • Type 3: Heavy-Duty (HD) Turbidity Curtain
  • Type 3: Heavy-Duty (HD) Permeable Curtain

Overview

Type 3 Turbidity Curtains: Heavy-Duty, Permeable and DOT Permeable Solutions

Type 3 Turbidity Curtains are high-strength floating sediment control barriers designed to help contain silt, turbidity, suspended sediment and displaced particles during demanding marine and in-water construction projects. Enviro-USA™ offers three Type 3 configurations: Type 3 Heavy-Duty (HD) Turbidity Curtain, Type 3 Heavy-Duty Permeable Turbidity Curtain and Type 3 DOT Permeable Turbidity Curtain. Each configuration is designed around different project requirements while providing a durable barrier for controlling sediment movement in challenging water conditions.

Type 3 systems are suited for marine environment applications including dredging, shoreline restoration and marine construction, particularly where currents, waves and other natural forces require a stronger sediment-control system. Enviro-USA™’s Type 3 product information describes these curtains as solutions for demanding conditions with flows up to 3 knots, while noting that current, wind, waves and project location can affect performance and may require additional anchoring, engineering or customization.

Applications

  • Dredging
  • Shoreline Restoration
  • Marine Construction
  • Sediment Control Projects in Moving Water
  • Projects Requiring a Permeable Type 3 Sediment Barrier
  • Projects Whose Specifications Call for the Type 3 DOT Configuration

SPECIFICATIONS

Type 3 DOT Permeable Turbidity Curtain drawing showing a yellow floating sediment barrier with black permeable panels, reinforced center connection, top tension hardware, flotation, and bottom ballast chain.

Type 3: DOT Permeable Turbidity Curtain

Specifications

  • Length: 50 ft. and 100 ft.
  • Skirt Draft Depths: 5 ft. Standard (3 ft. – 20 ft. Available by Request)
  • Fabric Material: 18 oz. PVC Coated Polyester with Monofilament
  • Float Type: Square Foam Filled Flotation
  • Float Size: 8 in.
  • Top Tension Cable: 5/16 in. Galvanized Steel Cable Sheathed in Vinyl
  • Bottom Ballast Chain: 5/16 in. Galvanized Steel Chain
  • Section Connectors: Grommets
  • Color: Yellow
  • Anchor Point: Every 50 ft. with Top and Bottom Stress Plates
Type 3 Heavy-Duty HD Turbidity Curtain drawing showing a yellow floating sediment control barrier with reinforced center connection hardware, foam-filled flotation, tension cable, anchor attachment points, and bottom ballast chain.

Type 3: Heavy-Duty (HD) Turbidity Curtain

Specifications

  • Length: 50 ft., Custom Lengths Also Available
  • Skirt Draft Depths: 5 ft. Standard (3 ft. – 100 ft. Available by Request)
  • Fabric Material: 22 oz. PVC Coated Polyester
  • Float Type: Square Foam Filled Flotation
  • Float Size: 12 in.
  • Top Tension Cable: Dual – 5/16 in. Galvanized Steel Cable
  • Bottom Ballast Chain: 3/8 in. Galvanized Steel Chain
  • Section Connectors: ASTM Universal Slide, Stress Plates, Grommets
  • Color: Yellow
  • Anchor Point: Every 50 ft.
Type 3 Heavy-Duty HD Permeable Turbidity Curtain drawing showing a yellow floating sediment barrier with black permeable panels, reinforced center connection hardware, flotation, tension cable, anchor points, and bottom ballast chain.

Type 3: Heavy-Duty (HD) Permeable Curtain

Specifications

  • Length: 50 ft., Custom Lengths Also Available
  • Skirt Draft Depths: 5 ft. Standard (3 ft. – 100 ft. Available by Request)
  • Fabric Material: 22 oz. PVC Coated Polyester with Monofilament
  • Float Type: Square Foam Filled Flotation
  • Float Size: 12 in.
  • Top Tension Cable: Dual 5/16 in. Galvanized Steel Cable Sheathed in Vinyl
  • Bottom Ballast Chain: 3/8 in. Galvanized Steel Chain
  • Section Connectors: ASTM Universal Slide, Stress Plates, Grommets
  • Color: Yellow
  • Anchor Point: Every 50 ft.

MEDIA GALLERY

Enviro-USA product sample for the Turbidity Barriers Ultimate Guide Blog
Turbidity Curtain Connector

Turbidity Curtain Resources:

Turbidity Barriers: The Ultimate Guide
DOT Compliance Guide
Turbidity Curtain Blog / News

A Type 3 Turbidity Curtain is a heavy-duty floating sediment control barrier designed to help contain silt, suspended sediment, turbidity, and displaced particles in demanding marine and construction environments. Type 3 Turbidity Curtains are commonly used for dredging, shoreline restoration, marine construction, and other in-water projects where stronger currents, waves, or challenging site conditions require a higher-strength containment system. Enviro-USA™ Type 3 Heavy-Duty systems are designed for demanding conditions with water flows up to 3 knots, depending on site conditions and system configuration.

The primary differences between Type 3 Turbidity Curtain configurations are their fabric, flotation, structural components, and permeability.

  • Type 3 Heavy-Duty Turbidity Curtain uses 22 oz. PVC-coated polyester fabric, 12-inch square foam-filled flotation, dual 5/16-inch galvanized steel top tension cables, a 3/8-inch galvanized steel ballast chain, and ASTM Universal Slide connectors.
  • Type 3 Heavy-Duty Permeable Curtain adds monofilament to the PVC-coated polyester fabric to create a permeable configuration while maintaining heavy-duty structural components.
  • Type 3 DOT Permeable Turbidity Curtain uses 18 oz. PVC-coated polyester with monofilament, 8-inch square foam-filled flotation, a 5/16-inch vinyl-sheathed galvanized steel tension cable, a 5/16-inch galvanized steel ballast chain, grommet connectors, and anchor points every 50 feet with top and bottom stress plates.

Type 3 Turbidity Curtains can be configured in different lengths and skirt draft depths to accommodate project-specific water depths and site conditions. Enviro-USA™ Type 3 Heavy-Duty and Heavy-Duty Permeable curtains are available in standard 50-foot sections, with custom lengths also available. Standard skirt depth is 5 feet, with depths ranging from 3 feet to 100 feet, available by request.

The Type 3 DOT Permeable Turbidity Curtain is available in 50-foot and 100-foot lengths, with a standard 5-foot skirt and optional skirt depths from 3 feet to 20 feet, by request. Because current, wind, waves, water depth, and site location can affect curtain performance, the appropriate size, anchoring system, and configuration should be selected based on the specific project conditions.