2010-05-07_PERMIT FILE - C2009087 ‎(45)‎

• Permit No: C2009087
• IBM Index Class Name: Permit File
• Doc Date: 5/7/2010
• Doc Name: Turf Reinforcement Mat Design & Installation Information
• Section_Exhibit Name: Exhibit 2.05.3-E2 Appendix 2.05.3-E2.G Attachment 2.05.3-E2.G-3
• Media Type: D
• Archive: No

•
PERFORMANCE SPECIFICATION
AMERICAN l P3 0 0
GREEN'
The P300 permanent turf reinforcement mat shall be a machine- produced mat of 100% UV stable polypropylene fiber.
The matting shall be of consistent thickness with synthetic fibers evenly distributed over the 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 0.625 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.
Clnna Tlacian rata
•
C ,
Channel Design Data
Roughnes s Coefficients
lope Gradient S
Slope Len
< 3:1
3:1 -2:1
2:2:1
< 20 ft (6 m)
0.001
0.029
0.082
20 — 50 ft
0.036
0.06
0.096
>_ 50 ft (15.2 m)
0.07
0.09
0.11
•
C ,
Channel Design Data
Roughnes s Coefficients
Flow Depth
Manning 's `n'
< 0.50 ft 0.15 m
0.034
0.50 — 2.00 ft
0.034 -0.020
> 2.02 m
0.020
Values are approximate, precise values obtamea corn
ECMDSTM
Approximate Maximum Flow Velocity
Unvegetated = 9 ftls (2.7 m/s)
Vegetated = 16 ft/s 4.9m/s
Maximum
Permissible Shear Stress*
Short Duration
Long Duration
Phase 1
3.0 lbs /ft
2.0 lbs /W
UNVEGETATIM
144 Pa
96 Pa
Phase 2
8.0 lbs /ft=
8.0 lbs /ft
PARTIALLY VEGETATED
383 Pa
383 Pa
Phase 3
8.0 lbs /ftz
8.0 lbs /ft
FULLY VEGETATED
383 Pa
383 Pa
*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 112004