Whenever the Planning Commission has adopted the Master Plan of the Municipality or of one or more major sections or districts thereof, no public way, square, park, ground, open space, building or structure shall be constructed or authorized in the Municipality or in such planned section and district until the location, character and extent thereof has been submitted to and approved by the Commission. In case of disapproval, the Commission shall communicate its reasons to Council, which shall have the power to overrule such disapproval by a recorded vote of not less than two-thirds of its entire membership. If the public way, ground, space, building, structure or utility is one the authorization or financing of which does not, under the law or Charter provisions governing the same, fall within the province of Council, then the submission to the Planning Commission shall be by the board, commission or body having such jurisdiction, and the Planning Commission's disapproval may be overruled by such board, commission or body by a vote of not less than two-thirds of its membership. The failure of the Commission to act within sixty days from and after the date of official submission to the Commission shall be deemed approval. For the purpose of furthering the desirable future development of the Municipality under the Master Plan, the Planning Commission, after adopting a Master Plan, shall prepare coordinated and comprehensive programs of public structures and improvements. The Commission shall annually prepare such a program for the ensuing six years, which program shall show those public structures and improvements, in the general order of their priority, which, in the Commission's judgment, will be needed or desirable and can be undertaken within the six-year period. The above comprehensive coordinated programs shall be based upon the requirements of the community for all types of public improvements and, to that end, each agency or department of the Municipality concerned with such improvements shall, upon request, furnish the Commission with lists, plans and estimates of time and cost of public structures and improvements within the purview of such agency or department.