Silt fence test results

Table 24.3 Silt fence test results (Sprague and Lacina, 2010)... 

The line fraction filtration test (Sansone and Koemer, 1992) can also provide valuable information about the long-term behaviour of filter fabric. In this test, the geotextile specimen is subjected to the flow of a mixture of water and soil. It may be particularly interesting for evaluating geotextile performance in silt fences in erosion control works. Palmeira and Farias (2000), eg, reported on test series in which slurries were used with soils from erosion in Brazil. The results showed that often the flow rate tended to stabilize even though conventional design would not recommend that use. 

GSWCC test method 11340 Because silt fences and wattles are also often used as perimeter devices around construction sites to intercept modest sheet flows, characterization testing associated with this application has been established in test method 11340. The test protocol closely follows the ASTM D6459 procedure described earlier. The accumulated data are used to determine an appropriate P-factor for use in the Revised Universal Soil Loss Equation. The GSWCC used test method 11340 to test a range of SRDs. Fig. 24.23 summarizes the results of the testing. It relates... 

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