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

MATERIAL SPECIFICATION
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The composite turf reinforcement mat (C-TRM) shall be amachine-produced mat of 70% straw/30% coconut 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 a heavy duty UV
stabilized bottom net with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings, an ultra heavy duty UV stabilized, dramatically
corrugated (crimped) intermediate netting with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings, and covered by a heavy duty
UV stabilized top net with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings. The middle corrugated netting shall form
prominent closely spaced ridges across the entire width of the mat. The three nettings shall be stitched together on 1.50
inch (3.81 cm) centers with UV stabilized polypropylene thread to form a permanent three-dimensional turf reinforcement
matting.
The SC250 shall meet requirements established by the Erosion Control Technology Council (ECTC) Specification and the
U.S. Department of Transportation, Federal Highway Administration's (FHWA) Standard Specifications For
Construction of Roads and Bridges on Federal Highway Projects, FP-03 2003 Section 713.18 as a Type SA, B, and C
Permanent Turf Reinforcement Mat.
Installation staple patterns shall be clearly marked on the turf reinforcement mattings with environmentally safe paint. All
mats shall be manufactured with a colored thread stitched along both outer edges (approximately 2-5 inches [5-12.5 cm]
from the edge) as an overlap guide for adjacent mats.
The coin osite turf reinforcement mat shall be the North American Green SC250, or equivalent. The SC250 permane~
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composite turf reinforcement mat shall have the following physical properties:
Material Content
Matrix 70% Straw Fiber
(0.35 lb/ydZ) (0.19 kg/mZ)
30% Coconut Fiber
(0.15 lb/ydZ) (0.08 kg/mZ)
Netting Top and Bottom -Heavy Duty UV Stabilized Polypropylene
(5.0 lbs/1,000 ftZ [2.44 kg/100 mZ] approximate weight)
Mid -Corrugated Ultra Heavy Duty UV Stabilized Polypropylene
(24 lb/1,000 ftZ [11.7 kg/100 mZ] approximate weight)
Thread UV Stabilized Polypropylene
SC250 is Available with the Following Physical Specifications Per Roll [English Units (Metric Units)]
Width 6.50 ft (2.00 m)
Length 55.50 ft (16.90 m)
Weight t 10% 34.00 lbs (15.42 kg)
Area 40.00 ydZ (33.40 mZ)
Stitch Spacing for All Rolls = 1.50 inches (3.81 cm) .
Updated 1/2004