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• MATERIAL SPECIFICATION <br />NORTH N <br />AMU W P550 <br />The composite turf reinforcement mat (C -TRM) shall be a machine - produced mat of 100% UV stabilized polypropylene <br />fiber matrix incorporated into a permanent three - dimensional turf reinforcement matting. <br />uted across the entire w idth The matrix shall be evenly distribh of the matting and stitch bonded ins and then ca b ottom <br />exed b y an <br />middle ultra heavy duty UV stabilized nettings with 0.50 x 0.50 inch (1.27 x 1.27 cm) op <br />ultra heavy duty UV stabilized nettings with 0.50 x 0.50 inch (127 x 1.27 cm) openings. The middle, dramatically <br />corrugated (crimped) netting shall form prominent closely spaced ridges across the entire width the mat The three <br />nettings shall be stitched together on 1.50 inch (3.81 cm) centers with UV stabilized polypropylene thread to form a <br />permanent three - dimensional turf reinforcement matting. <br />The P550 shall meet requirements established by the Erosion Control Technology Cou ft�ad S pec <br />Specificatio ns d For <br />U.S. Department of Transportation, Federal Highway Administration's (FHW ) S <br />Construction of Roads and Bridges on Federal Highway Projects, FP -03 2003 Section 713.18 as a Type 5A, B, and C <br />Permanent Turf Rainforcement Mat. <br />Installation staple patterns shall be clearly marked on the turf reinforcement mattings with environmentally safe -paint. All <br />mats shall be manufactured with a colored thread stitched along both outer edges (approximately 2 -5 inches [5 -12.5 cm] <br />from the edge) as an overlap guide for adjacent mats. <br />• The composite turf reinforcement mat shall be the North American Green P550, or equivalent The P550 permanent <br />composite turf reinforcement mat shall have the following physical properties: <br />Material Content <br />Matrix 100% UV Stabilized Polypropylene Fibers <br />(0.501bs /yd (0.27 kg/m <br />Netting Top and bottom- Ultra Heavy Duty UV Stabilized Polypropylene <br />(24 lb /1,000 ft [11.7 kg/100 m approximate weight) <br />Mid — Corrugated Ultra Heavy Duty UV Stabilized Polypropylene <br />(24 lb /1,000 ft [11.7 kg/100 m�] approximate weight) <br />Thread UV Stabilized Polypropylene <br />P550 is Available with the Following Physical Specifications Per Roll [English Units Metric Units)] <br />Width 6.50 ft (2.00 m) <br />Length 55.50 ft (16.90 m) <br />W .+ 10% 52 lbs (23.59 kg) <br />A rea 40.00 yd (33.40 m) <br />Stitch Spacing for All Rolls =1.50 inches (3.81 cm) <br />Updated 1/2004 <br />