___________________ is the minimum size plastic soil or waste pipe that may be installed underground?

___________________ is the minimum size plastic soil or waste pipe that may be installed underground?

• A. 1 1/2 inch
• B. 2 inch
• C. 3 inch

Answer: (B)

The minimum size for plastic soil or waste pipe that may be installed underground is 2 inches. This size is established to ensure adequate flow and to accommodate the volume of waste and water that the system may handle. Smaller pipes, such as 1 1/2 inch, do not provide the necessary capacity to prevent clogs and backflow, especially in systems that carry waste or have the potential for high volumes of drainage. Additionally, 3 inch pipes, while larger and certainly acceptable in many cases, exceed the minimum requirement and are typically used in specialized applications or larger systems. The 2 inch minimum aligns with common plumbing practices and regulations, ensuring proper performance and reliability in underground installations.

The minimum size for plastic soil or waste pipe that may be installed underground is 2 inches. This size is established to ensure adequate flow and to accommodate the volume of waste and water that the system may handle. Smaller pipes, such as 1 1/2 inch, do not provide the necessary capacity to prevent clogs and backflow, especially in systems that carry waste or have the potential for high volumes of drainage. Additionally, 3 inch pipes, while larger and certainly acceptable in many cases, exceed the minimum requirement and are typically used in specialized applications or larger systems. The 2 inch minimum aligns with common plumbing practices and regulations, ensuring proper performance and reliability in underground installations.