Owner Shall be Responsible for Cleaning and Maintaining Pipe.
Minimum Cross-slope to be 1% for Grain Pipe.
Place 4 x 4 Wire Mesh full Length 24° on Each Side of Pipe.
Under Sidewalk Drains to be Used Only by Approval of City Engineer
Where a Stone Drain Does Not Exist or Extension of an Existing Storm Drain is Impractical.