The maximum horizontal spacing of supports for 3/4" CPVC tubing shall not exceed how many feet?

• A. 2 feet
• B. 3 feet
• C. 4 feet
• D. 5 feet

Answer: (B)

The maximum horizontal spacing of supports for 3/4" CPVC tubing is established to ensure the structural integrity and proper functioning of the piping system. Keeping the supports at a maximum of 3 feet apart helps prevent sagging or bending, which can lead to potential leaks or damage to the tubing.

This spacing limit is based on the physical properties of CPVC, including its flexibility and the thermal expansion characteristics. Proper support not only maintains the alignment of the pipe but also accommodates any movement due to temperature changes without over-stressing the material. Each of the other specified distances may allow for more sagging than is safe for ensuring that the tubing remains adequately supported. Thus, 3 feet is specified to balance support and flexibility effectively.