Type III Silt Barrier

Type III Silt Barrier is a tough silt curtain which is designed specifically for silt control in rivers, inter-coastal waterways, bays and harbors.

These rough water floating silt curtain is ideal for demanding applications whether dredging contaminated sediments or demolishing bridges.

 

Typical Specifications
Product	Type 3 Economy	Type 3 Heavy Duty
Flyer	Economy Barrier Flyer	Heavy Duty Barrier Flyer
Drawings	-	Drawing Details Drawing
Flotation	6" Marine Grade Flotation	12" Marine Grade Flotation
Fabric	Reinforced Impermeable PVC Fabric	22 oz. PVC Fabric 500 x 550 lbs/sq inch
Section Connectors	ASTM 962 Universal Slide Aluminum Extruded Connectors with Anchor Eyebolt	Universal Slide Bulk Connectors
Connector Fabric	Bolt Rope Reinforced Grommet Section Ties	Bolt Rope Reinforced Grommet Section Ties
Bottom Chain/ Low Tension Cable	Heavy 5/16" Steel Ballast Chain	3/8" Steel Ballast Chain
Tension Cables		Two 5/16" Galvanized Steel Cable (one on each side of the skirt)
Skirt		Optional Skirt Filter Panel See Drawing
Furling Lines		Can be Equipped with Skirt Furling Lines for Multiple Deployments See Drawing
Standard Length	50' or 100'	50' or 100'
Freeboard	-	8-12" Depending on skirt depth
Draft	3 to 100'	3 to 100'

Learn More about the Type III Silt Barrier

• Barrier Colors: High Visibility Safety Yellow

• Load carrying components:
  • Base Fabric
    (500x550 lbs tensile ASTM)
  • Dual Center tension 5/16 inch galvanized Steel Cables
    (18,400 lbs tensile)
  • Single 3/8 inch galvanized Steel Chain (10,400lbs tensile)

• Curtain Skirt: The curtain skirt is ballasted to hang vertical in the water by a minimum 3/8” Chain weighing 1.5 lbs per foot.

• Section Connectors: Sections easily connect at the waterline via extruded Aluminum ASTM Bulk Connectors with stainless steel toggle pin. Skirt connect via overlapped reinforced grommets and chains via shackles.

• Section Ends: These ends are dual seamed, with bolt-rope reinforcement of a minimum of 1/4" inch rope.

• Furling Lines: When equipped with furling lines, these turbidity barriers can be used for multiple deployments.

Granite Environmental,Inc. is dedicated to developing innovative turbidity curtain solutions that provide superior performance and achieve the desired results for our customers. We work closely with our client team to design a deployment layout taking into consideration water conditions, project progress, budget and water quality goals.

In order to provide an accurate assessment for our clients we normally will request the following information:

• Site Conditions
• Water Velocity
• Waves (height, frequency, etc)
• Wind Speed and Direction
• Tides
• Soil Type (contaminated?)
• Project Duration
• Site Specific Requirements and project specifications

 

In addition, if the project is environmental remediation, like pcb (heavy metals) removal or brownfields (coal tar) related we may require a site survey/walk to get a good understanding of the site specific requirements.

Our goal is to work with our clients to develop the best solution for their specific project and help them come in under budget and on time.

This silt screen product can help keep you in compliance with NPDES and Clean Water Act on marine based activities where protecting the environment is key.

Back to Top

Other Turbidity Control Options

Other Turbidity Barriers

• Type I (Economy & DOT Available)
• Type II (Medium & Heavy Duty)
• Staked Silt Barrier
• Dredging Barrier
• Silt Barrier Variety

Other Filtering Devices

• Dewatering Bags
• Silt Fence (Standard & DOT)

Installation Materials

Wondering how to install your Type III silt barrier once its arrived to your site? Check out our installation guides including:

• Assembly & Installation (pdf guide)
• Picture Installation (pdf with pictures)

 

Back to Top