The Board shall annually elect a Chairman from its own membership. Meetings shall be held at the call of the Chairman or at such times as a quorum of the Board may establish. All such meetings shall be open to the public. Minutes shall be made and maintained of all proceedings, showing the action of the Board and the vote of each member upon each question or if absent indicating such fact. It shall keep records of its examinations and other official actions all of which shall be fixed in the offices of the Administrator and shall be a public record. The Board shall adopt such rules and regulations as it deems necessary for the performance of its duties. Four members of the Board shall, for all purposes, constitute a quorum. However, it shall require the affirmative vote of four members to reverse, modify or affect any order, requirement, decision, or determination on any request or application, including a variance.
(1969 Code 150.402)