The restrictions and controls intended to regulate development in each zoning district are set forth in the attached schedule of standards and supplemented by other sections of this chapter The schedule of standards comprises a list of permitted principal and accessory uses as well as height limitations, area and yard requirements special permitted uses planned developments, parking and loading and sign requirements No building shall hereafter be erected, altered, converted or enlarged, wholly or in part, except in conformity with the schedule of standards of this chapter