Local Road Management Manual 342 Contents 1. Introduction. . . . . . . 5 2. Methods and Procedures 6 2.1. General. . . . . . . 6 2.2. Rating Segments. . . . . . 6 2.3. National Roads. . . . . . 7 2.3.1. Measurement over 50m Gauging Length. 9 2.4. Location in the Road System. . . . 11 2.5. Procedure for Rating. . . . . 11 2.6. Recording of Ratings. . . . . 12 2.7. Equipment. . . . . . 14 3. Condition Rating. . . . . . . 15 3.1. Pavement (Flexible) 3.1.1. Patches. . . . . 16 3.1.2. Potholes. . . . . 17 3.1.3. Surface Failures. . . . 18 3.1.4. Pavement Cracking. . . . 19 3.1.5. Pavement Rutting. . . . 21 3.1.6. Wearing Surface (Raveling/Flushing) . 23 3.1.7. Edge Break (Horizontal). . . 24 3.2. Pavement (Rigid) 3.2.1. Transverse Joint Sealant Distress. . 26 3.2.2. Faulting at Transverse Joints. . . 28 3.2.3. Spalling at Joints. . . . 30 3.2.4. Pavement Cracking. . . . 32 3.2.5. Shattered Slabs. . . . 34 3.2.6. Scaling. . . . . 35 3.3. Unsealed Roads. . . . . . 36 3.3.1. Gravel Thickness. . . . 37 3.3.2. Material Quality. . . . 38 3.3.3. Crown Shape. . . . 39 3.3.4. Roadside Drainage. . . . 40 3.4. Drainage. . . . . . . 41 3.4.1. Side Drains. . . . . 42 3.5. Shoulders . . . . . . 43 3.5.1. Unsealed Shoulders. . . . 44 3.5.2. Shoulders. . . . . 43 3.5.3. Unsealed Shoulders. . . . 44 3.5.4. Sealed, Asphalt Surfaced and Concrete Shoulders. . . . . . 45