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• <br />• <br />The composite turf reinforcement mat (C -TRM) shall be a machine - produced mat of 100% UV stabilized polypropylene 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 the bottom and middle ultra heavy <br />duty UV stabilized nettings with 0.50 x 0.50 inch (127 x 127 cm) openings and then covered by an ultra heavy duty UV stabilized <br />nettings with 0.50 x 0.50 inch (127 x 1.27 cm) openings. The middle, dramatically corrugated (crimped) netting shall form prominent <br />closely spaced ridges across the entire width of the mat. The three nets 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 />Twical <br />0.76 in (1930 mm) <br />95% <br />0.528 oz!m' (0.913 gf cm') <br />21.45 oz/yd= (723 9WO <br />96% <br />122,906 ijelydi (1,684,589 cm' /m) <br />36627 oz -in (4,087,934 mg-cm) <br />16% <br />100% <br />763 lbs /$(11.15 kNlm) [13 81 lbs/fr (20.15 kN/tn)] <br />10%[13 <br />1134 lbs/fr (1655 kN/m) 11523 lbs/ft (2223 kN/m)] <br />11%[13%] <br />*ASTM Di 682 (4 inch strip) Tensile Strength and percent Strength Retention of material following 1000 hrs exposure in Xenon -Arc Weatherometer. <br />MD — Machine direction <br />TD — Transverse direction <br />Bench Scale <br />• <br />ECTC Method 2 — Determination of <br />unvegetated RECP's ability to protect soil <br />from rain splash and associated =off <br />ti, jt.IVLCtnuu a — ,mac......,.... _ <br />unvegetated RECP's ability to protect soil <br />from hydraulically- induced shear stress. <br />Failure criteria = 0.50 inch soil loss <br />ECTC Draft M etnoa'+ LC Ci "L'� auvu va <br />temporary RECP performance in encouraging <br />seed germination and plant growth <br />nee o et ;n = Snil LOSS With Bare Soil / <br />.,U mm (L mpar gut J. ,,,,., <br />100 min (4 in)/hr for 30 min <br />150 mm (6 in)/hr for 30 min <br />Shear. 4.48 lbs/fl for 30 min <br />Shear. 5.14 lbs/ft for 30 min <br />Shear. 5.64 Ibs/fF for 30 min <br />Shear at 0.50 inch•soil loss (450g) <br />Top soil; Fescue (Kentucky 31); 21 da; <br />incubation 27° C t 20 & approximately <br />50 %RH <br />xii Loss with RECD (NOTE: Soil loss ba <br />Sort loss ratio* = tu.iy <br />Soil loss ratio* = 9.98 <br />Soil loss 0-* = 9.53 <br />Soil loss: 262g <br />Soil loss: 4459 <br />Soil loss: 6459. <br />5.1 lbSIW <br />Percent improvement = 354% <br />(increased biomass) <br />on regression a nalysis) <br />tBench Scale Performance Testing <br />Bench scale tests are index property tests. These tests are not indicative of field performance and therefore should not be used in <br />design to establish performance levels for rolled erosion control products. Bench scale tests are performed according to methods <br />developed by the Erosion Control Technology Council (ECTC). <br />Updated It2004 <br />Test Method <br />Thidmess <br />ASTM D6525 <br />Resiliency <br />ASTM D6524 <br />Density <br />ASTM D792 <br />Mass per Unit Area <br />ASTM D6566 <br />Porosity <br />ECTC Guidelines <br />Open Volume/Unit Area <br />ECTC Guidelines <br />Stiffness <br />ASTM D1388/ECTC <br />LigittPenefradon <br />ECTC Guidelines <br />UV Stability <br />MD Tensile Strength <br />ASTM D4355* <br />ASTNI D6818 [ASTM D50351 <br />NO Elongation <br />ASTM D6818 [ASTM D50351 <br />TD Tensile Strength <br />ASTNI D6818 [ASTM D50351 <br />D6818 [ASTMD5035] <br />TD Elongation <br />ASTM <br />Bench Scale <br />• <br />ECTC Method 2 — Determination of <br />unvegetated RECP's ability to protect soil <br />from rain splash and associated =off <br />ti, jt.IVLCtnuu a — ,mac......,.... _ <br />unvegetated RECP's ability to protect soil <br />from hydraulically- induced shear stress. <br />Failure criteria = 0.50 inch soil loss <br />ECTC Draft M etnoa'+ LC Ci "L'� auvu va <br />temporary RECP performance in encouraging <br />seed germination and plant growth <br />nee o et ;n = Snil LOSS With Bare Soil / <br />.,U mm (L mpar gut J. ,,,,., <br />100 min (4 in)/hr for 30 min <br />150 mm (6 in)/hr for 30 min <br />Shear. 4.48 lbs/fl for 30 min <br />Shear. 5.14 lbs/ft for 30 min <br />Shear. 5.64 Ibs/fF for 30 min <br />Shear at 0.50 inch•soil loss (450g) <br />Top soil; Fescue (Kentucky 31); 21 da; <br />incubation 27° C t 20 & approximately <br />50 %RH <br />xii Loss with RECD (NOTE: Soil loss ba <br />Sort loss ratio* = tu.iy <br />Soil loss ratio* = 9.98 <br />Soil loss 0-* = 9.53 <br />Soil loss: 262g <br />Soil loss: 4459 <br />Soil loss: 6459. <br />5.1 lbSIW <br />Percent improvement = 354% <br />(increased biomass) <br />on regression a nalysis) <br />tBench Scale Performance Testing <br />Bench scale tests are index property tests. These tests are not indicative of field performance and therefore should not be used in <br />design to establish performance levels for rolled erosion control products. Bench scale tests are performed according to methods <br />developed by the Erosion Control Technology Council (ECTC). <br />Updated It2004 <br />