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<br />PERFORMANCE SPECIFICATION <br />AM~1RC N P300 <br />GREEN' <br /> <br />The P300 permanent turf reinforcement mat shall be amachine-produced mat of 100% UV stable polypropylene fiber. <br />The matting shall be of consistent thickness with synthetic fibers evenly distributed over the entire azea of the mat. The <br />matting shall be covered on the top with black heavyweight UV stabilized polypropylene netting having ultraviolet <br />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 <br />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 <br />together on 1.50 inch (3.81 cm) centers with UV stabilized polypropylene thread. <br />Slope Desi>;n Data <br /> Slo a Gradient S <br />Slo e Len L <_ 3:1 3:1-2:1 >_ 2:1 <br /><20 fr (6 m) 0.001 0.029 0.082 <br />20 - 50 ft 0.036 0.06 0.096 <br />?50fr(15.2m) 0.07 0.09 0.11 <br /> <br /> <br />Channel Design Data <br />Rou ess Coefficients <br />Flow De th Mannin 's `n' <br /><_ 0.50 ft 0.15 m 0.034 <br />0.50 - 2.00 ft 0.034-0.020 <br />> 2.00 ft 0.60 m 0.020 <br />Values are approximate, precise values obtained from <br />ECMDST^' <br />Maximum Permissible Sheaz Stress* <br /> Short Duration Lon Duration <br />Phase 1 <br />UNVEGETATED 3.0 Ibs/ft~ <br />144 Pa 2.0 Ibs/ft~ <br />96 Pa <br />Phase 2 <br />PAATLV.LY VEGETATED 8.0 Ibs/ft' <br />383 Pa 8.0 Ibs/ft' <br />383 Pa <br />Phase 3 <br />FULLY VEGETATED 8.0 Ibs/ft' <br />383 Pa 8.0 Ibs/ft~ <br />383 Pa <br />Aaaroximate Maximum Flow Velocity <br />Unvegetated = 9 ft/s (2.7 m/s) <br />Ve etated = ] 6 fUs 4.9 m/s <br />*Performance values obtained through third party testing at the Texas Transportation Institute, Colorado State University, and Utah State <br />University based on soil loss failure criteria not exceeding 0.50 inches (1.27 cm). <br />Updated 1/2004 <br />