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Turbidity Curtains

Turbidity curtains are construction structures that are effective in confining turbidity. Turbidity is made up of silt and sediment and results from the mixing and dredging activities in a construction site near a large body of water. Turbidity curtains also go by various other names, including silt curtains and silt barriers.


A floating turbidity curtain comes with a set of seamless float elements on its top side. It is also fixed with a fabric skirt positioned just underneath the floating elements. The fabric skirt has a decent length, which is enough to cover at least a foot of the bottom side. It can be used to manage various forms of turbidity.

Silt curtains and turbidity curtains are made in three sizes. They come in 25, 50, and 100 ft pieces, which are linked to form a long barrier that covers the area being worked on. Silt curtains are made in three distinct types, with the variation depending on the mode of operation and the environmental conditions in the area in which they will be used.

Some of the uses of turbidity curtains include restoring coastal areas and seashores, making pipeline crossings, silt dredging, modifying, restoring, and removing dams.

Types of Turbidity Curtains

As mentioned above, turbidity curtains come in three different options depending on the factors to be considered. They are Type 1 Impermeable, Type 2 Impermeable, and Type 2 Permeable. If you are looking for a turbidity curtain compatible with the DOT Type 2, then Type 2 turbidity curtains are what you should go for. Type 2 curtains are also appropriate for moving water and medium-duty needs. Since the names are very similar, it is vital to know the difference between the curtains to make a good decision.

Type 1 Impermeable Turbidity Barrier 6" Float

This Styrofoam float has a buoyancy capability of 61 lbs/ft2 and is 6” thick. Its features are adequate to maintain a 3-inch distance between the waterline and the barrier. Knowing what skirt depth to be used will be determined by the project’s needs, but it varies between 1ft and 10ft. This type is suitable for areas protected from winds and where the velocity is lower than 1 ft/sec. Such areas include shallow lakes, marshes, and ponds.

Type 2 Impermeable Turbidity Barrier 12" Float

It is another Styrofoam float that is 12” thick and has a buoyancy capability of 53 lbs/ft2. Its skirt depth starts from 21ft and is suitable for harbors, inland waterways, and rivers.

Type 3 Permeable Turbidity Barrier 12" Float

This option is also made from polystyrene. It has a buoyancy capability of 53 lbs/ft2, and its float is 12" thick. As with the others, the skirt depth depends on the needs of the project. It is also strong enough to maintain the barrier 3 inches over the waterline. This type is suitable for inland waterways, harbors, lakes, and rivers.

DX2 Geosyntex, Inc.

DX2 Geosyntex, Inc. has been in the construction industry for around three decades. We provide top-of-the-range products, especially for projects involving protecting ecosystems and roads. The products include dewatering bags, silt fences, and excelsior mats. It is the best choice if you are looking for a turbidity curtain. The company’s staff are also experienced in handling the materials and guiding a prospective client.

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