According to Ten State Standards, when a sewer is installed parallel to a water line, what is the minimum distance away measured from the outside diameters?

According to Ten State Standards, when a sewer is installed parallel to a water line, what is the minimum distance away measured from the outside diameters?

• A. 6 feet
• B. 48 inches
• C. 36 inches
• D. 10 feet

Answer: (D)

The main concept is the required horizontal separation between a sewer line and a water main when they run parallel. Ten State Standards specify that the distance between the outside surfaces of the two pipes must be ten feet. Measuring from the outside diameters ensures you’re counting the full width of each pipe, including fittings and joints, not just the centers or interior spaces. This spacing helps prevent cross-contamination risks and provides room for bedding, backfill, and future maintenance. Therefore, the minimum distance is ten feet.

The main concept is the required horizontal separation between a sewer line and a water main when they run parallel. Ten State Standards specify that the distance between the outside surfaces of the two pipes must be ten feet. Measuring from the outside diameters ensures you’re counting the full width of each pipe, including fittings and joints, not just the centers or interior spaces. This spacing helps prevent cross-contamination risks and provides room for bedding, backfill, and future maintenance. Therefore, the minimum distance is ten feet.