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FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

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MaterialCoconut (1) 100%Table 713-4Coconut MatSpecification0.44 lb/yd² min.Photodegradable netting on one sideNetting0.625 to 1 inch square mesh (2) with a3.0 lb/1,000 ft² mass(1) Moisture content shall not exceed 20 percent.(2) Dimensions are approximate and may vary to meetmanufacturer's standards.Section 713(4) Type 4 - Synthetic erosion control mats and meshes.(a) Synthetic mat. Furnish a machine produced flexible mat consistingof polyolefin monofilament fibers positioned between 2 biaxiallyoriented nets. Mechanically bind the nets together by parallel stitchingwith polyolefin thread to form a 3-dimensional web-like weave,highly resistant to environmental and chemical deterioration. Conformto Table 713-5.Table 713-5Synthetic Erosion Control MatProperty Specifications Test MethodColorThicknessStrength (1)Elongation (1)Porosity (2)Resiliency (3)Ultraviolet stability (4)Green0.25 inches min.108 x 36 lbs/ft min.50% max.85% min.80%80%VisualASTM D 1777ASTM D 5035ASTM D 5035CalculatedASTM D 1777ASTM D 4355(1) Values for both machine and cross-machine directions under dry or saturatedconditions. Machine direction specimen for 2-inch strip test includes one machinedirection polyolefin stitch line centered within its width and extending the full lengthof the specimen.(2) Calculation based upon mass, thickness, and specific gravity.(3) The percentage of original thickness retained after 3 cycles of a 100-pounds persquare inch load for 60 seconds followed by 60 seconds without load. Thicknessmeasured 30 minutes after load removed.(4) Tensile strength retained after 1000 hours in an Xenon ARC weatherometer.723

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