A 3" vertical stack without a water pipe shall be in what type of wall?

A 3" vertical stack without a water pipe must be installed in a wall that has a minimum width of 6 feet. This requirement is rooted in plumbing code guidelines that emphasize the need for adequate clearance and access for proper installation and maintenance.

The primary reason for this specification is to ensure that the stack can function effectively without risking obstruction or compromising the structural integrity of the building. Stacks are integral to the drainage system, transporting waste and venting gases. Therefore, they require sufficient space for installation, support, and inspection.

Walls that are 6 feet wide provide enough room for the stack, allowing for the necessary framing and support around it. This ensures both compliance with building codes and practical considerations for plumbing and maintenance.

The other options do not meet the necessary requirements for the installation of a vertical stack without a water pipe. A width less than 6 feet would not provide the needed space for safe and efficient operation of the stack, highlighting the importance of following the plumbing code closely to ensure proper system functionality and safety.