What is the maximum slope length for a 12" diameter filter log on a 3:1 slope?

In the context of Maryland's Erosion and Sediment Control guidelines, the specific sizing and application of filter logs are crucial for effective sediment management on slopes. When considering the installation of a filter log, factors such as diameter and slope gradient come into play.

For a 12-inch diameter filter log placed on a 3:1 slope, the guidelines indicate that a filter log is not appropriate due to its size and the steepness of the slope. The design and use of filter logs are governed by standards that take into account the potential for sediment control effectiveness and the physical limit of the log's capacity to handle runoff.

In this case, using a filter log of 12 inches diameter on a slope as steep as 3:1 may not provide adequate performance against sediment transport. The steepness increases the velocity of water runoff, which can overwhelm the log's ability to filter sediments effectively. As a result, larger diameter logs or different erosion control measures are recommended for steeper slopes to ensure adequate sediment control and minimize the risk of erosion.

Thus, the statement regarding the inapplicability of a 12-inch log on a 3:1 slope aligns with best practices in sediment control, reinforcing the importance of adhering to recommended guidelines to