(a) In addition to other acts required by law or by specific charter provisions to be done by ordinance, those council acts shall be by ordinance which:
(1) Adopt or amend an administrative code or establish, alter or abolish any city department, office or agency;
(2) Provide a fine or other penalty or establish a rule or regulation for violation of which a fine or other penalty is imposed;
(3) Grant, renew or extend a franchise;
(4) Adopt, with or without amendment, ordinances proposed under the initiative power and;
(5) Amend or repeal any ordinance previously adopted, except as otherwise provided by this charter with respect to repealing ordinances reconsidered under the referendum power.
(b) Acts other than those referred to in Section 8.5(a) may be done either by ordinance or resolution.