PERMFILE72435

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 6/1/2007
• Doc Name: Turf Reinforcement Mat Design and Installation Information
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13-12.A
• Media Type: D
• Archive: No

PERFORMANCE SPECIFICATION
AM~1RC N P300
GREEN'

The P300 permanent turf reinforcement mat shall be amachine-produced mat of 100% UV stable polypropylene fiber.
The matting shall be of consistent thickness with synthetic fibers evenly distributed over the entire azea of the mat. The
matting shall be covered on the top with black heavyweight UV stabilized polypropylene netting having ultraviolet
additives to prevent breakdown and an approximate 0.50 x 0.50 inch (1.27 x 1.27 cm) mesh size. The bottom net shall
also be UV stabilized polypropylene, with a 0.625 x 0.625 inch (1.57 x 1.57 cm) mesh size. The matting shall be sewn
together on 1.50 inch (3.81 cm) centers with UV stabilized polypropylene thread.
Slope Desi>;n Data
Slo a Gradient S
Slo e Len L <_ 3:1 3:1-2:1 >_ 2:1
<20 fr (6 m) 0.001 0.029 0.082
20 - 50 ft 0.036 0.06 0.096
?50fr(15.2m) 0.07 0.09 0.11

Channel Design Data
Rou ess Coefficients
Flow De th Mannin 's `n'
<_ 0.50 ft 0.15 m 0.034
0.50 - 2.00 ft 0.034-0.020
> 2.00 ft 0.60 m 0.020
Values are approximate, precise values obtained from
ECMDST^'
Maximum Permissible Sheaz Stress*
Short Duration Lon Duration
Phase 1
UNVEGETATED 3.0 Ibs/ft~
144 Pa 2.0 Ibs/ft~
96 Pa
Phase 2
PAATLV.LY VEGETATED 8.0 Ibs/ft'
383 Pa 8.0 Ibs/ft'
383 Pa
Phase 3
FULLY VEGETATED 8.0 Ibs/ft'
383 Pa 8.0 Ibs/ft~
383 Pa
Aaaroximate Maximum Flow Velocity
Unvegetated = 9 ft/s (2.7 m/s)
Ve etated = ] 6 fUs 4.9 m/s
*Performance values obtained through third party testing at the Texas Transportation Institute, Colorado State University, and Utah State
University based on soil loss failure criteria not exceeding 0.50 inches (1.27 cm).
Updated 1/2004