The licensing landscape for plumbing engineers and designers versus master plumbers, when a project actually requires a PE stamp, standard of care and liability in plumbing design, coordination responsibilities on a design team, and professional ethics.
Plumbing work sits under two genuinely distinct licensing regimes that are easy to conflate: a PE license (or a designer working under one) governing design responsibility, and a master plumber license, issued by a separate plumbing board, governing who is legally permitted to install the work and pull the permit. This module works through where each credential actually applies, when a project crosses the threshold into requiring an engineer's stamp, and where the two roles overlap on a real project without one substituting for the other.
It closes with the standard of care a plumbing design is actually judged against, coordination responsibilities with structural, electrical, fire protection, and mechanical, and the ethical core of the profession: never signing off on work — a test result, a field condition, a commissioning record — that wasn't actually verified.