When installed underground with only earth and grass as cover, polyvinyl chloride conduit must have a minimum of ___ inches of cover.

When installed underground with only earth and grass as cover, polyvinyl chloride conduit must have a minimum of ___ inches of cover.

• A. 18 inches
• B. 6 inches
• C. 12 inches
• D. 24 inches

Answer: (A)

When PVC conduit is buried underground under soil and grass, the depth is set to protect it from common surface activities and future digging. The standard minimum cover in this scenario is eighteen inches. That depth helps guard against damage from lawn care, gardening, and shallow digging, while keeping the conduit far enough below the surface to remain reliable over time. If the installation were under a paved area or a street where vehicles travel, the minimum cover increases to twenty-four inches, because vehicle traffic adds greater risk of impact. So under a lawn with only earth and grass, eighteen inches is the appropriate minimum.

When PVC conduit is buried underground under soil and grass, the depth is set to protect it from common surface activities and future digging. The standard minimum cover in this scenario is eighteen inches. That depth helps guard against damage from lawn care, gardening, and shallow digging, while keeping the conduit far enough below the surface to remain reliable over time.

If the installation were under a paved area or a street where vehicles travel, the minimum cover increases to twenty-four inches, because vehicle traffic adds greater risk of impact. So under a lawn with only earth and grass, eighteen inches is the appropriate minimum.