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• <br />• <br />a MATERIAL SPECIFICATION <br />AMO�� SC250 <br />�: <br />The composite turf reinforcement mat (C -TRM) shall be a machine- produced mat of 70% straw /30% coconut fiber matrix <br />incorporated into a permanent three - dimensional turf reinforcement matting. <br />The matrix shall be evenly distributed across the entire width of the matting and stitch bonded between a heavy duty UV <br />stabilized bottom net with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings, an ultra heavy duty UV stabilized, dramatically <br />corrugated (crimped) intermediate netting with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings, and covered by a heavy duty <br />UV stabilized top net with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings. The middle corrugated netting shall form <br />prominent closely spaced ridges across the entire width of the mat. The three nettings shall be stitched together on 1.50 <br />inch (3.81 cm) centers with UV stabilized polypropylene thread to form a permanent three - dimensional turf reinforcement <br />matting. <br />the <br />The SC250 shall meet requirements established by the Erosion Control Technology Council ECT rd Speci a nd <br />For <br />U.S. Department of Transportation, Federal Highway Administration's (FHWA) S p e c ifi c atio n s <br />Construction of Roads and Bridges on Federal Highway Projects, FP -03 2003 Section 713.18 as a Type 5,4, B, and C <br />Permanent Turf Reinforcement Mat. <br />Installation staple patterns shall be clearly marked on the turf reinforceme er m ti with env ly 2-5 inche 512 S t. All <br />mats shall be manufactured with a colored thread stitched along both g (pP <br />from the edge) as an overlap guide for adjacent mats. <br />The composite turf reinforcement mat shall be the North American Green SC250, or equivalent. The .SC250 permanent <br />composite turf reinforcement mat shall have the following physical properties: <br />Material Content <br />Matrix 70% Straw Fiber <br />(0.35 lb/yd') (0.19 kg/m <br />30% Coconut Fiber <br />(0.15 lb /yd (0.08 kg/m) <br />Netting Top and Bottom - Heavy Duty UV Stabilized Polypropylene <br />(5.0 lbs /1,000 ft [2.44 kg/100 m approximate weight) <br />Mid - Corrugated Ultra Heavy Duty W Stabilized Polypropylene <br />(24 lb /1,000 ft [11.7 kg/100 m21 approximate weight) <br />Thread UV Stabilized Polypropylene <br />SC250 is Available with the Following Physical Specifications Per Roll [English Units (Metric Units)] <br />Width <br />6.50 ft (2.00 m) <br />Length <br />55.50 ft (16.90 m) <br />Weight :k 10% <br />34.00 lbs (15.42 kg) <br />Area <br />40.00 yd (33.40 m <br />• <br />Stitch Spacing for All Rolls =1.50 inches (3.81 cm) <br />Updated 1/2004 <br />