Developing VTM-51 Into an ASTM Test Method

Report No: 94-R2

Published in 1993

About the report:

In 1980, the Virginia Transportation Research Council developed a procedure to test silt fence installations (VTM-51). The test determines the filtering efficiency (amount of soil removed) and the flow rate of a geotextile. A known concentration and volume of sediment-laden water is timed as it passes through a geotextile sample. In 1988, ASTM Committee D35 requested that the Virginia Transportation Research Council consider developing VTM-51 into an ASTM Test Method. This report documents the many tests performed to meet this request, the numerous reviews of ASTM committees and subcommittees, and other work efforts required to develop ASTM Test Method 5141, Determine Filtering Efficiency and Flow Rate of a Geotextile for Silt Fence Application Using Site Specific Soil. The major differences between the two test methods are the number of samples to be tested, the number of runs on each sample, and the soil used.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.


  • David C. Wyant

Last updated: December 23, 2023

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