N.Y.C. Admin. Code § 28-409.1: § 28-409.1 Journeyman plumber registration qualifications.

The commissioner shall register an applicant as a journeyman plumber who has qualifications reflecting a progressive understanding, proficiency and competence in the plumbing trade, including:

1. A working familiarity with the plumbing code and technical standards and the ability to apply the code requirements correctly;

2. The application of basic plumbing theory and the utilization of trade skills on the job site;

3. A working knowledge of the tools of the trade and the ability to utilize them properly; and

4. An ability to draft simple diagrams and interpret from drawings for the purpose of the plumbing work in which the applicant is engaged.