Which type of barricade uses cohesive earth fill free from organic matter and debris?

• A. Natural
• B. Artificial
• C. Temporary
• D. Permanent

Answer: (B)

The correct choice refers to artificial barricades, which are constructed using cohesive earth fill that is specifically selected to be free from organic matter and debris. This type of fill is crucial for ensuring stability and strength in the barricade structure. Cohesive soil, often clay or silt, exhibits properties that allow it to bind together effectively when compacted, creating a reliable barrier.

Artificial barricades are typically engineered for specific purposes, such as controlling water flow, directing traffic, or providing protection in military or construction settings. The quality and composition of the materials used in constructing these barricades are vital for their effectiveness and durability.

In contrast, natural barricades consist of organic materials or natural earth formations that may not provide the same level of reliability due to their variable composition. Temporary barricades are designed for short-term use and may not follow the stringent standards regarding material composition. Permanent barricades, while also founded on solid engineering principles, may not always utilize cohesive earth fill that is free from organic matter, as their design may incorporate various materials based on long-term objectives. Thus, choosing artificial barricades reflects a focus on the engineering and material specifications necessary for effective performance.