Rhode Island Journeyman Plumber Practice Exam 2026 - Free Journeyman Plumber Practice Questions and Study Guide

The installation of a building trap is generally considered illegal in many jurisdictions, including Rhode Island, due to issues related to sanitary conditions and plumbing codes. Building traps, also known as house traps, can create problems by allowing sewage gases to accumulate within a building's drainage system, which poses a health risk. Moreover, they can lead to blockages within the drainage system, making it difficult for waste to flow freely and requiring more frequent maintenance.

In more modern plumbing codes, building traps are often replaced or removed in favor of designs that promote a more efficient and sanitary drainage system. Ensuring that plumbing complies with current sanitary standards and safety regulations is crucial, and that's why the law overwhelmingly prohibits the installation of building traps.

Other options suggest limited allowances or different contexts (like commercial buildings or under certain conditions), but even these situations are typically not supported by current plumbing codes that prioritize optimal drainage and public health. Hence, the answer confirming the illegality of installing a building trap aligns with the overarching plumbing regulations in Rhode Island and similar jurisdictions.