Barriers for Turbidity Control
Turbidity Control Curtains are impermeable barriers* constructed
of a flexible reinforced thermoplastic material dielectrically welded
to provide an upper hem for enclosing flotation material and a lower
hem for enclosing ballast material. The skirt depth of the silt curtain
is the material vertically below the upper hem. The length of the
turbidity curtain is the horizontal distance between ends. Additional construction
features are dependent on silt curtain design.
Barriers are designed to control the settling of solids (silt) suspended
in water by providing a controlled area of containment. This condition
of suspension (turbidity) is usually created by disrupting natural
conditions through construction or dredging in the marine environment.
The containment of settleable solids is desirable to reduce the
impact area of these solids.
the Silt Curtains listed are standard, Boom Environmental can custom design
specific floating booms to solve unique problems. What this means is that
the standard designs are available with a variety of fabric options,
flotation sizes, load-bearing and ballast members, connectors and
lengths. When a variation on a standard design won't work, Boom Environmental engineers
can design to meet the requirements.
Design Silt Curtain
Calm waters with little current, such as lakes, ponds,
canals and shoreline areas.
Fabric - Polyester reinforced vinyl high visibility
Sections are laced together through grommets and load lines
are bolted together.
6" expanded polystyrene
over 9 lbs./ft. buoyancy.
Ballast - 1/4"
Application: Rivers, streams, open lakes
and exposed shorelines with moderate
current moving in one direction.
Fabric - Polyester reinforced vinyl high visibility yellow
18 oz/yd2 weight.
Connector - Shackled and bolted
Flotation - 8" expanded polystyrene
over 19 lbs/ft buoyancy.
Ballast Line/Ballast - 5/16" galvanized
chain (1.1 lbs/ft).
Top Load Line - 5/16" galvanized wire
rope enclosed in heavy tubing.
Application: Exposed areas subject to
current, wind and tides.
Fabric - High strength
nylon reinforced vinyl high visibility yellow
22 oz/yd2 weight.
Connector - Snap hooks and rings connect
load lines with slotted reinforced PVC pipe for fabric closure.
*Optional extruded aluminum connectors.
Flotation - 12" expanded polystyrene
over 29 lbs./Ft buoyancy.
Ballast - 5/16" galvanized chain
Load Lines - Dual 5/16" galvanized
wire ropes with heavy vinyl coating.