Par. 1. - No plumber shall engage in or work at the business of plumbing unless he shall first have registered his name and place of business in the office of the commissioner, and no person shall by display of sign or plumbing material, or otherwise, advertise as a plumber unless he shall have been registered or licensed as such. Every master plumber shall conspicuously display his certificate or license within his place of business. Notice of any change in the place of business of a registered or licensed master plumber shall immediately be given by him to the commissioner.

[Chap. 103, Revised Laws.] [Chap. 287, Acts of 1914.] [Chap. 536, Acts of 1919.]

Section 114. Notices

Par. 1. - Every plumber, before doing any work in a building, shall, except in the case of repair of leaks, file in the office of the commissioner a plan or sketch of the work to be performed; and no such work shall be done in any building without a written permit from the commissioner.

Section 115. Connection With Sewer or Drain

Par. 1. - The plumbing of every building shall be separately and independently connected outside the building with the public sewer, if such sewer is provided, or with a proper and sufficient private drain or sewer laid outside of the building, and if a sewer is not accessible, with a proper cesspool. Several buildings may have a common sewer connection if such connection is approved by the commissioner and the superintendent of sewers.

Section 116. Inspection and Tests

Par. 1. - Pipes or other fixtures shall not be covered or concealed from view until approved by the commissioner, who shall examine or test the same within two working days after notice that they are ready for inspection. Plumbing shall not be used unless, when roughed in, the wastes, vents and back air pipes and traps are first tested by water or sufficient air pressure in the presence of an inspector, when such testing is practicable.