A sewer shall have atleast _______ inch cover.

A sewer shall have atleast _______ inch cover.

• A. 18
• B. 12
• C. 24
• D. 36

Answer: (A)

Minimum cover above a sewer line is required to protect the pipe from surface loads, provide room for proper bedding and backfill, and help guard against frost movement. Eighteen inches is the standard minimum, giving enough soil to distribute loads from surface traffic and equipment while allowing safe installation and future maintenance. If the depth were only twelve inches, the pipe would be more vulnerable to damage from loads and freezing; deeper cover like twenty-four or thirty-six inches would be more than the minimum and increase excavation costs, though in some locations or conditions greater depth may be needed. Always follow local code requirements.

Minimum cover above a sewer line is required to protect the pipe from surface loads, provide room for proper bedding and backfill, and help guard against frost movement. Eighteen inches is the standard minimum, giving enough soil to distribute loads from surface traffic and equipment while allowing safe installation and future maintenance. If the depth were only twelve inches, the pipe would be more vulnerable to damage from loads and freezing; deeper cover like twenty-four or thirty-six inches would be more than the minimum and increase excavation costs, though in some locations or conditions greater depth may be needed. Always follow local code requirements.