What is the recommended slope for excavations deeper than 5 feet?

The correct option emphasizes the importance of maintaining safety standards during excavation work. For excavations deeper than 5 feet, a safe slope of 1:1 (or 45 degrees) is recommended, which allows for the stability of the soil and reduces the risk of cave-ins. Additionally, the phrase "or as specified by a qualified person" acknowledges that specific conditions at a worksite may require tailored solutions, and the input from a qualified person ensures that safety measures are adequately considered.

This approach aligns with OSHA standards, which emphasize risk assessment and the adaptability of safety measures based on the specific soil type and environmental conditions present at the excavation site. The slope helps distribute the weight of the surrounding soil and prevents accidents that can occur due to soil instability.