2007-10-30_PERMIT FILE - C1982057 ‎(3)‎

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 10/30/2007
• Doc Name: Turf Reinforcement Mat Design and Installation Information
• Section_Exhibit Name: Tab 20 Attachment 20-C
• Media Type: D
• Archive: No

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SUPPLEMENTAL SPECIFICATION
P550
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The composite turf reinforcement mat (C-T1tM) shall be amachine-produced mat of 100% W stabilized polypropylene fiber matrix
incorporated into a permanent three-dimensional turf reinforcement matting.
The matrix shall be evenly distributed across the entire width of the matting and stitch bonded between the bottom and middle ultra heavy
duty UV stabilized nettings with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings and then covered by an ultra heavy duty W stabilized
nettings with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings. The middle, dramatically corrugated (crimped) netting shall form prominent
closely spaced ridges across the entire width of the mat. The three nets shall be stitched together on 1.50 inch (3.81 cm) centers with W
stabilized polypropylene thread to form a permanent three-dimensional turf reinforcement matting.
prpp~y Test Method
Thiclrness ASTM D6525
]tesiliency ASTM D6524
Density ASTM D792
Mass per Unit Area ASTM D6566
Porosity ECTC Guidelines
Open Volume/Unit Area ECTC Guidelines
Stiftitess ASTMD1388/ECTC
Light Penetration ECTC Guidelines
W Stability ASTM D4355*
MD Tensile Strength ASTM D6818 [ASTM D5035]
MD Elongation ASTM D6818 [ASTM D5035]
TD Tensile Strength ASTM D6818 [ASTM D5035]
TD Elongation ASTM D6818 [ASTM D5035]
yai~
0.76 in (1930 mm)
95
0.528 oz/m' (0.913 g/cm')
21.45 oz/yd~ (728 g/m~
96
122,906 ut'/yd= (1,684,589 cm'/m~
366.27 oz-in (4,087,934 mg-cm)
16%
.100%
7631bs/ft(11.151cN/m) [13811bs/ft(20.151cN/m)]
10 % [13 %]
11341bs/ft (1655 kN/m) [1523 Ibs/ft (22.23 kN/m)]
11% [13 %]
*ASTM D1682 (4 inch strip) Tensile Strength and percent Strength Retention of material following 1000 hrs exposure in Xenon-Arc Weatherometer.
MD -Machine direction
TD -Transverse direction
B h S I T stin t
enc ca e e g
Test Method - Descri tiou
Parameters
Results
ECTC Method 2 - Determination of 50 mm (2 in)/hr for 30 min Soil loss ratio* =10.79
unvegetated RECP's ability to protect soil 100 mm (4 in)/hr for 30 min Soil loss ratio* = 9.98
lash and associated runoff
from rain s
p 150 mm (6 in)/lu for 30 min Soil loss ratio* = 9.53
ECTC Method 3 -Determination of Shear. 4.48 lbs/ft' for 30 min Soil loss: 262g
unvegetated RECP's ability to protect soil Shear: 5.141bs/ft2 for 30 min Soil loss: 445g
draulically-induced shear stress.
from h
y
Failure criteria = 0.50 inch soil loss Shear. 5.641bs/ftz for 30 min Soil loss: 645g
Shear at OSO inch'soil loss (4508) 5.1 Ibs/fN
ECTC Draft Method 4 -Determination of Top soil; Fescue (Kentuclry 31); 21 day percent improvement = 354%
temporary RECP performance in encouraging incubation 27° C t 2° & approximately (increased biomass)
seed germination and plant growth 50% RH
* Soil Loss Ratio =Soil Loss with Bare Soil /S oil Loss with RECP (NOTE: Soil loss based on regression analysis)
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tBench Scale Performance Testing
Bench scale tests are index property tests. These tests are not indicative of field performance and therefore should not be used in
design to establish performance levels for rolled erosion control products. Bench scale tests are performed according to methods
developed by the Erosion Control Technology Council (ECTC).
Updated 1/2004