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Coir logs are natural coconut fiber logs with applications in
wetland mitigation, shoreline stabilization and stream bank/channel
protection. Each log is made from double cleaned, unsorted coconut
fiber encased in high tensile strength coir twine netting.
Coir logs help to dissipate the impact from wave action and flowing
water, trap sediments and encourage vegetation growth. During
installation, native seedlings or plant cuttings can be planted
into the Coir log. Sediment trapped by the Coir logs as well as the
inherent property of the coir fiber to absorb and retain moisture
provides an ideal medium for vegetation establishment and
Coir logs are available in 12", 16" and 20" diameters. The logs
are typically 10 or 20 feet long.
Environmental designers evaluate site conditions prior to
installation to determine the appropriate size, density and number
Coir logs required. Site parameters evaluated often include flow
velocity, wave height, stream energy, soil type and accessibility
to the project site.
Normal Density (ND
Series): seven pounds per cubic foot. Offers faster root
development, ease of handling and installation.
High Density (HD
Series): nine pounds per cubic foot. Offers increased
protection in high energy sites.
Coir logs generally last for two to five years. As it
bio-degrades, the plants develop a well-established root system in
the shoreline sediment which will retain the soil in place
preventing further erosion. The decomposing Coir log provides
valuable humus to the soil.
Erosion control netting and blankets are used to provide
temporary but quick coverage for exposed areas. Most of the erosion
control netting ABI carries is made of jute or other biodegradable
material and is used to anchor seeds and mulch, such as straw or
wood chips, that might otherwise be washed or blown away. Together,
the netting and mulch reduce erosion and can protect seeds until
they can germinate. Pre-fabricated erosion control blankets can be
rolled onto the surface and staked in place. They provide
protection from rainfall and runoff and have perforations to allow
water to seep into the soil.
Gabions are wire-mesh structures most often filled with rock and
soil. Gabion baskets should be lined with coconut fiber to hold
soil in place and allow plants to grow. Vegetation is planted
between the rocks once the plants become mature, this type of
shoreline protection should provide more habitat than traditional
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