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SUPPLEMENTAL SPECIFICATION <br />cam" P550 <br />The composite turf reinforcement mat (C-TRM) shall be amachine-produced mat of 100% UV stabilized polypropylene Sber matrix <br />incorporated into a permanem twee-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 Wettings with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings and then covered by an ultra heavy duty UV stabilized <br />Wettings with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings. The middle, drematicaUy corrugated (crimped} netting shall fomr 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 pennanentthree-dimensional nrrt'reinforcement molting. <br />Thiclmes5 <br />Resiliency <br />Density <br />Mass per Unit Ares <br />Porosity <br />Open VolumdClnitArea <br />Stiffness <br />Light Penetration <br />UV Stability <br />MD Tensile Strength <br />MD Ebngation <br />TD Tensile Strengdt <br />TD Elongation <br />Test Method <br />ASTM D6525 <br />ASTM D6524 <br />ASTM D792 <br />ASTM D6s66 <br />ECfC Guidelines <br />ECCC Guidelines <br />ASTM D1388/ECI'C <br />ECTC Guidelines <br />ASTM D4355• <br />ASTM D6818 [ASTM Ds035] <br />ASTM D6818 [ASTM D5035] <br />ASTM D68] 8 [ASTM Ds035] <br />ASTM D6818 [ASTM D5035] <br />Twieal <br />0.76 ht (1930 mm) <br />95 % <br />0528 orlm' (0.913 g/cm') <br />2L4s a~yd=(ng gent=) <br />96 <br />122,906 irt'/yd' (1,684,s89 cm'/rtr~ <br />36627 oz-ht (4,087,934 mgcm) <br />16% <br />100% <br />7631bs/ft (11.15 kN/m) [13811bs/ft (20.15 kN/m)] <br />10 % [13 %] <br />1134 IbsHt (1655 kN/m) [15231bs/ft (2223 kN/m)] <br />"ASTM D1682 (4 inch strip) Tensile Strength and percent Strength Retention of material follovring 1000 hrs exposure in Xenon-Arc Weatherometer. <br />MD -Machine direction <br />TD -Transverse direction <br />Bench Scale Testingt <br />Test Method - Descri lion Parameters Results <br />ECTC Method 2 -Determination of 50 mm (2 in}/hr for 30 min Soil loss ratio' = 10.79 <br />d RE <br />P' <br />bili <br />il <br />mvege[ate <br />s a <br />ty m protect so <br />C <br />from rain splash and associated wtoff 100 mm (4 inyhr for 30 min Soil loss ratio' = 9.98 <br /> 150 mm (6 in)/hr for 30 min Soil loss ratio" = 9.53 <br />ECTC Method 3 - Determination of Shear. 4.4816s/ft for 30 min Soil loss: 262g <br />RE <br />P' <br />ili <br />il <br />unvegefated <br />s ab <br />ty to protect so <br />C <br />from hydraulically-induced shear stress. Shear. 5.141bs/ft' for 30 min Soil loss: 4458 <br />Failure criteria = 0.50 inch soft loss Shear: 5.6416s/fF for 30 nvn Soil loss: 645g <br /> Shear at 0.30 ineh~soil lose (430g) 3.1 Ibs/ft' <br />ECTC Draft Method 4 -Detumination of Top soil; Fescue (Kentucky 31); 21 day ° <br />Percent improvement = 354 /° <br />temporary RECP performance in encouraging incubation 27° C t 2° & approximately (maeased biomass) <br />seed germination and lent growth 30%RH <br />• Soil Loss Ratio =Soil Loss with Bare Soil /S oil Loss witb RECP (NOTE: Soil loss based on scion anal cis <br />L_ J <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 12004 <br />