All streets and thoroughfares shall be graded to their full width, including side slopes, and improved in conformance with the standards given or referred to in these Regulations. These standards are considered minimum and are subject to change where deemed necessary. All materials and construction procedures shall be in accordance with the current Construction and Materials Specifications of the State of Ohio Department of Transportation or the specifications on file in the City Engineer’s office and Hamilton County Department of Public Works, whichever are more stringent.