PERMFILE105744

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 6/11/2007
• Doc Name: Turf Reinforcement Mat Design & Installation Information
• Section_Exhibit Name: Tab 07 Appendix 7-12 Attachment 7-12-A
• Media Type: D
• Archive: No

NORTH
AMERICAN
GREEN'
P300

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 [he entire area 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 0.626 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.
PERFORMANCE SPECIFICATION
Slope Desil:n Data
•

Slo a Gradient S
Slo e Len h L <_ 3:1 3:1-2:1 >_ 2:1
<_ 20 fr (6 m) 0.001 0.029 0.082
20 - 50 fr 0.036 0.06 0.096
>_ 50 fr (] 5.2 m) 0.07 0.09 0.11
Channel Design Data
Values are approximate, precise values obtained from
ECMDST^'
Rou hness Coefficients
Flow De ih Mannin 's `n'
< 0.50 ft 0.15 m 0.034
O.SD - 2.00 ft 0.034-0.020
> 2.00 ft 0.60 m 0.020
A~tproxima[e Maximum Flow Velocity
Unvegetated = 9 ft/s (2.7 m/s)
Ve etated = 16 ft/s 4.9 m/s
Maximum Permissible Sheaz Stress*
Short Duration Lon Duration
Phase ]
UNVEGETATED 3.0 Ibs/ft~
144 Pa 2.0Ibs/ft~
96 Pa
Phase 2
PARTIALLY VEGETATED 8.0 ]bs/ft~
383 Pa 8.0 !bs/ft'
383 Pa
Phase 3
FULLY VEGETATED 8.0 Ibs/ft=
383 Pa 8.0 Ibs/ft2
383 Pa
"Performance values obtained through third party testing at [he 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