It shall be the function and duty of the Planning Commission to act as the platting commissioners of the City, and as such it shall have control of planning and shall provide regulations with respect to the platting of all lands within the City so as to secure their harmonious development; to provide for the coordination of streets with other streets and with the official municipal plan; to provide for open spaces for traffic, utilities, access of fire fighting apparatus, recreation, light and air, and for the avoidance of congestion of population. It shall make such regulations as it deems necessary as to the manner in which streets and other public ways shall be graded and improved; the manner in which and the extent to which water, sewer and other utility mains, piping or other facilities shall be installed, or establish any other conditions precedent to the approval of a proposed plat. The Commission shall make plans and maps of the whole or any portion of the City and of any land outside the City which, in the opinion of the Commission, bears a relation to the planning of the City, and make changes in, additions to, and estimates of such plans or maps when it deems the same advisable. It shall have such powers as may be conferred upon it by ordinance of the Council concerning the plan, design, location, removal, relocation and alteration of any public building or structure or those located on public streets or property, the location, relocation, widening, extension and vacation of streets, parkways, playgrounds and other public places, the zoning and rezoning of the City for any lawful purpose, and such other powers as may now or hereafter be conferred upon it by ordinance of the Council or the general laws of the State of Ohio.