North Carolina General Contractors Practice Exam

What is the required tensile strength for silt fence fabric?

1. 20 PSI

2. 25 PSI

3. 30 PSI

4. 35 PSI

The correct answer is: 30 PSI

The required tensile strength for silt fence fabric is specified to ensure that the material can withstand the environmental conditions while effectively controlling sediment and water flow. The tensile strength of 30 PSI provides a robust level of durability, allowing the silt fence to endure stress without tearing or failing, especially in areas subjected to runoff and soil erosion. In scenarios where silt fences are deployed, they face significant pressure from water and sediment that can lead to strain on the fabric. A tensile strength of 30 PSI is measured to provide a balance between flexibility and strength, enabling it to hold up against these conditions without losing its effectiveness in preventing sediment from leaving the construction site. This specification helps ensure compliance with construction and environmental regulations, ultimately supporting best practices in erosion and sediment control. Therefore, knowing that the correct tension strength for such applications is 30 PSI is essential for those involved in construction and soil management practices in North Carolina.