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Joints in filter fabric shall be spliced at <br /> posts. Use staples,wire rings or 2"x2"L, 14 Ga.wire or <br /> equivalent to attach fabric to posts equivaiy ent, it standard .. <br /> ;....� _._._. . . strength fabric used � <br /> t { t , <br /> ' Filter fabric <br /> . r <br /> :EFEF <br /> ;s <br /> ... ... _. , <br /> ' 6'max ______.,� `.. .Mir{imur» 4"x�l"trench i <br /> i <br /> Backfill trench with native sail' <br /> Post spacing may be increased ` or 3/4"-1.5'washed gravel <br /> to 8'if wire backing is used <br /> 2"x2"woad posts,steel fence <br /> posts,or eciuivaleol <br /> Figure 4.2.12-•Sift Fence <br /> Design and • Use in combination with sedinient basins or other BMPs. <br /> Instltllation Maximum slope steepness (normal(perpendicular) to fence line) <br /> Specifications 1 H;1 V. <br /> • Maximum sheet or overland flow path length to the fence of 100 feet. <br /> • Do not allow flows greater than 0.5 efs. <br /> The geotextile used shall meet the following standards. All geotextile <br /> properties listed below are minimum average roll values (i.e., the test <br /> result for any sampled roll in a lot shall meet or exceed the values <br /> shown in Table 4.2.3): <br /> Table 4.2.3 <br /> Geotextile Standards <br /> Polymeric Mesh AOS 0.60 nnn maximum for slit film woven(#30 sieve).0.30 <br /> (ASTM D4751) mm maximum for all other geotextile types(#50 sieve). <br /> 0.15 mm minimum for all fabric types(#100 sieve). <br /> Water Permittivity 0.02 sec'{ minimum <br /> (ASTM D4491) <br /> Grab Tensile Strength 180 lbs.Minimum for extra strength fabric. <br /> (ASTM D4632) 100 lbs minimum for standard strength fabric. <br /> Grab Tensile Strength 30%maxinnun <br /> (ASTM D4632) <br /> Ultraviolet Resistance 70%minimum <br /> (ASTM D4355) <br /> • Support standard strength fabrics with wire mesh, chicken wire,2-inch <br /> x 2-inch wire, safety fence, or jute mesh to increase the strength of the <br /> Vohmie II—Construction Slornnvater Pollution Prevention -Airgirst 2012 <br /> 4-8y <br />