Examination subjects and passing grades

Examination for applicants desiring to become registered and licensed plumbers shall consist of: answering questions pertaining to the basic principles of plumbing and the plumbing code; preparing drawings on which the applicant is to draw all stacks, wastes, and vents, and to insert the minimum pipe sizes. The examinations for master and journeyman plumber need not be the same. The passing grade for a master plumber shall be eighty percent, and the journeyman plumber passing grade shall be seventy percent.