The vote on the question of passage of each ordinance and motion shall be taken by a roll call of members to be entered on the journal, or other record of proceedings of the Council, and none shall be passed without concurrence of a majority of the members of Council. Each emergency ordinance shall require the affirmative vote of at least two-thirds of the members of Council for its enactment. If an emergency ordinance shall fail to receive the required two-thirds affirmative vote, but receives the necessary majority for passage as nonemergency legislation, it shall become effective as non-emergency legislation.