The board shall keep minutes of their proceedings, showing the vote of each member, or if absent or failure to vote indicating such fact, and shall keep records of its examinations and other official actions, all of which shall be a public record and shall be filed in the city office. The official minutes of the board's proceedings shall be signed by the chairman or acting chairman and attested by the recording secretary. The decision of the board shall become effective immediately, unless otherwise directed by the board. (1983 Revised Code § 11.03.002; amd. 2004 Code)