Subtitle 18Grades, Grading, and Paving § 18-1. Fixing grade line - on application. § 18-2. Fixing grade line - Director's initiative. § 18-3. Fixing grade line - notice. § 18-4. Fixing grade line - grade profiles. 18-5. {Reserved} § 18-6. Cobblestones prohibited. § 18-7. How work done. § 18-8. Macadamizing permitted. § 18-9. Paving without curbs permitted. § 18-10. Center gutters. § 18-11. "Bike-safe" grates required.