Contech Construction Erosion Control Solutions Knowledge. Solutions. Service.
Erosion Control Solutions
Knowledge. Solutions. Service.
Erosion Control Solutions
CONTECH TRM ULTIMATE PERMISSIBLE
SHEAR STRESS
8
6
4
2
.5 hours
.5 hours
.5 hours
50 hours
50 hours
50 hours
50 hours
50 hours
50 hours
50 hours
Bare
Soil
TRM
C-35
TRM
C-45
Pyramat 6"
Riprap*
12"
Riprap*
Ve
getated
Pyramat
Ultimate Permissible Shear Stress Under Bare Soil Conditions
(lbs/ft
2
)
Flow Duration
See Note 4 – Table 2
.5 hours
20
15
10
5
.5 hours
50 hours
50 hours
50 hours
50 hours
50 hours
50 hours
Bare
Soil
TRM
C-35
TRM
C-45
Pyramat 6"
Riprap*
12"
Riprap*
Ve
getated
Pyramat
Ultimate Permissible Velocities Under Bare Soil Conditions
(ft/second)
CONTECH TRM ULTIMATE PERMISSIBLE
VELOCITY
Flow Duration
See Note 4 – Table 2
.5 hours
.5 hours
.5 hours
50 hours
Water Quality and Soil
Erosion
Soil erosion is a serious environmental
threat and is a major contributor to the
degradation of water quality. Wind, rain
and runoff displace soil particles from
bare or sparsely covered earth, potentially
reducing the stability of the original
site and impairing the performance of
downstream drainage systems.
The strong root structures of well
established vegetation help control soil
erosion. For slopes and channels, erosion
blankets are cost-effective aids for erosion
control and revegetation. CONTECH
Construction Products Inc. offers a
complete line of biodegradable erosion
control fiber blankets and permanent
geosynthetic turf reinforcement mats.
When environmental conditions go
beyond the limits of natural or reinforced
vegetation, CONTECH also offers a full line
of hard armor solutions.
Erosion Control Blankets and Turf
Reinforcement Mats Maintain Water
Quality
With the ultimate goal of establishing
healthy, permanent vegetation, properly
selected erosion blankets offer many
benefits when deployed correctly. These
products are specifically designed to:
Absorb rainfall impact/energy
•
Reduce runoff velocities
•
CONTECH Provides Solutions
for Erosion Control,
Shoreline Protection and
Sediment Control
Only CONTECH offers such a broad range
of high-quality products for establishing
vegetation on disturbed soils, protecting
soil against high-shear stresses, restricting
silt displacement that accompanies runoff
from poorly-vegetated sites and improving
the performance of hard armor shoreline
protection systems. CONTECH products are
the cost-effective solution to soil erosion
and sediment control problems.
Degradable Erosion Control Blankets
Protect Slopes and Channels when
Developing New Vegetation
CONTECH temporary blankets—comprised
of straw fiber, photodegradable
polypropylene, excelsior fibers, straw/
coconut mixed fibers, or 100% coconut
fibers—protect seedlings and later
decompose to provide natural mulch.
Permanent, Non-degradable
Synthetic Turf Reinforcement Mats
Stabilize Vegetated Slopes and
Channels
When flow conditions or other site
factors result in shear stresses that exceed
the limits of natural vegetation alone,
CONTECH’s permanent turf reinforcement
mats maintain the integrity of vegetated
slopes and channels.
Temporary Degradable Blankets
Applications from Mild-to-Steep
Slopes and Mild Channels
SFB1 & SFB2: Straw fiber blankets with
netting on one or both sides. Intended for
mild slopes and channels and are expected
to last approximately 12-18 months.
SCFB2: Straw-coconut fiber blanket that
has two layers of netting. Designed for
moderate slopes and mild channels, they
are intended to last approximately 24
months.
CFB2: A coconut fiber blanket between
two layers of net. Designed for steep
slopes and mild channels and should last
up to 36 months.
EFB1 & EFB2: Excelsior fiber blankets with
one or both sides of netting. Intended for
moderate slopes and mild channels and
normally last approximately 12-18 months.
EFB4: Excelsior fiber blanket with
netting on top and bottom—stitchbonded. Designed for steep slopes and
mild channels and is intended to last
approximately 24 months.
C-Jute: A lightweight, open weave
polypropylene jute blanket. Intended for
mild slopes and channels and should last
approximately 12 months.
Absorb and/or retain moisture
•
Enhance germination by moderating
•
temperature fluctuations and retaining
soil moisture
Entrap soil/sediment
•
Provide root/stem reinforcement
•
Provide natural organic mulch upon
•
breakdown (degradable blankets only)
Facilitate ground water recharge
•
Enhance water quality
•
Temporary erosion control blankets provide
an excellent growing environment for newly
seeded embankments and slopes where
vegetation alone cannot withstand the
natural erosive environment.
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