Whenever an application for a plumbing permit is made, the Chief Building Official or the Plumbing Inspector may, if he or she finds it necessary to determine whether work described in the application will comply with the laws pertaining to such work, require that the applicant file a written description or drawing of the proposed plumbing construction as may be prepared for the purpose. If such drawing or description is insufficient for the purposes of determining whether a permit should be issued, the Chief Building Official or the Plumbing Inspector may require the applicant to file complete architectural and engineering plans and specifications for such building or construction, or any part thereof, as may be necessary for the Inspector to determine compliance with this article. The filing of such plans and specifications and the approval thereof in connection with an application for a permit shall not in any way affect the authority of the city to deny or issue a permit, or to inspect any plumbing work for conformity with this article.