Florida Home Inspector Practice Test

The correct answer indicates that plumbing stacks should terminate at least 10 feet horizontally from a window. This distance is important for several reasons, primarily to ensure the health and safety of the building's occupants.

Plumbing stacks, which are vertical pipes that transport wastewater and vent gases from the plumbing system, can emit odors and gases as part of their normal function. If a stack terminates too close to a window, there is a risk that these unpleasant odors and potentially harmful gases may enter the living space through the window, leading to discomfort and health risks for those inside.

Moreover, building codes and regulations often set specific distances for the discharge of plumbing vent stacks to mitigate these risks. The 10-foot requirement acts as a safeguard, helping to maintain good indoor air quality and enhance the overall livability of a home.

This guideline is based on best practices in plumbing systems design, ensuring they function effectively while protecting residents. Other distances mentioned, such as 5, 15, or 20 feet, either compromise safety by being insufficiently close or unnecessarily far, which doesn't align with standard practices for effective venting.