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• ~ PERFORMANCE SPECIFICATION <br />NORTH <br />AMERICJ'W C350 <br />C3REEN' <br />The composite turf reinforcement mat (C-TRM) shall be amachine-produced mat of 100% coconut fiber matrix <br />incorporated into a permanent three-dimensional turf reinforcement matting. <br />The matrix shaII be stitch bonded between a super heavy duty UV stabilized bottom net with 0.50 x 0.50 inch <br />(1.27 x 1.27 cm) openings, a ultra duty UV stabilized, dramatically corrugated (crimped) intermediate netting <br />with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings, and covered by a super heavy duty UV stabilized top net with 0.50 <br />x 0.50 inch (1.27 x 1.27 cm) openings. The corrugated netting shall form prominent closely spaced ridges across <br />the entire width of the mat. The three nettings shall be stitched together on 1.50 inch (3.81 cm) centers with UV <br />stabilized polypropylene thread to form a permanent three-dimensional turf reinforcement matting. <br />Slope Design Data -Unvegetated Cover Factors <br /> <br /> Slope Gradient (S) <br />Slope Length (L) 5 3:1 3:1-2:1 z 2:1 <br /><_ 20 ft (6 m) 0.0005 0.015 0.043 <br />20 - 50 ft 0.018 0.031 0.050 <br />z 50 ft (15.2 m) 0.035 0.047 0.057 <br />Roughness Coefficients -Unvegetated <br />Flow Depth Manning's'n' <br />5 0.50 ft (0.15 m) 0.041 <br />0.50 - 2.00 ft 0.040-0.013 <br />>_ 2.00 ft (0.60 m) 0.012 <br />Apyroximate Maximum Flow Velocity <br />Unvegetated = 10.5 ft/s (3.20 m/s) <br />Vegetated = 20 ft/s (6.0 m/s) <br />Channel Design Data <br />Maximum Permissible Shear Stress* <br /> Short Duration Long Duraion <br />Phase 1 <br />UNVEGETATED 3.201bs/ft= <br />(153 Pa) 3.00 lbs/ftz <br />(144 Pa) <br />Phase 2 <br />PARTIALLY VEGETATED 10.00 lbs/ft% <br />(480 Pa) 10.001bs/ftz <br />(480 Pa) <br />Phase 3 <br />FULLY VEGETATED 12.00 lbs/ftz <br />(576 Pa) 10.001bs/ftz <br />(480 Pa) <br />Values are approximate, precise values obtained from ECMDSrm <br />*Performance values obtained through third parry testing at the Texas Transportation Institute, Colorado State University, <br />and Utah State University based on soil loss failure criteria not exceeding 0.50 inches (1.27 an). <br />r~ <br />L <br />