Which Silt Fence is Made of PVC Fabric?

Hello. I have a project spec for silt fence of 18 oz. nylon reinforced PVC fabric (3000 PSI Test). The silt fence calls for 6' centers, 3' high, and an 8" depth. Is this a typical type 1 silt fence? What do you recommend?

Great Questions! Thanks for shooting them our way. Granite Environmental is happy to help! A typical silt fence is normally manufactured from woven geotextile filter fabric. I believe what you are requiring is actually a staked silt barrier.

This "silt fence" is made from an 18 oz Reinforced Impermeable PVC fabric. It comes in a standard length of 100' (1500'/pallet). The Section and Stake Connections are Nylon ties, which are supplied 50 each/100' roll. It is 44.5" Wide and has Load Carrying Components of 350 lbs tensile.

To install this BMP, dig an 8 inch deep trench along the desired flow control path placing fill on up slope side of trench. On down slope side of trench install 1"x1" wooden stakes (re-bar of similar) on 6' centers maximum. These are to protrude 36" above the gradient. Unroll the Silt barrier and fasten to stakes with ties - 36 inches attached to stakes and 8 inches in trench (HEMMED EDGE IS TOP). Once entire run is in place and desired flow diversion path is in place then back-fill the 8 inch trench trapping the bottom 8 inches of the silt barrier, effectively creating a runoff seal.

This system works best on gentle to moderately sloped sites with porous soil. This system can be used in water depths less than 30" and no flow. In place of back-fill use sand bags to create bottom seal.

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