Transportation Engineering I

Syllabus

1. Transportation System, Planning and Engineering (10 hours)
   1. Transportation system definition, scope, role
   2. System components, characteristics, and classification
   3. Transportation modes and comparative analysis
   4. Transportation planning needs, classification, system approach
   5. Multimodal planning and land-use models
   6. Transportation engineering scope (highway, airport, railway)
   7. Traffic engineering definition and scope
   8. Road user and vehicular characteristics
   9. Perception-reaction processes, skid resistance, brake efficiency
   10. Stopping and overtaking sight distances
2. Highway Engineering (4 hours)
   1. Highway engineering and scope
   2. Road transportation advantages
   3. Historical road development
   4. Nepal road classifications (NRS, NRRS, NURS)
   5. Highway alignment requirements and controlling factors
   6. Engineering survey for alignment
   7. Hill road alignment considerations
3. Geometric Design of Highway (16 hours)
   1. Factors controlling geometric design
   2. Cross-sectional design elements (camber, super elevation, widening)
   3. Horizontal alignment (tangents, curves, transition curves, hairpin bends, setback)
   4. Vertical alignment (gradient, grade compensation, vertical curves)
   5. Combined alignment and safety considerations
4. Highway Drainage (4 hours)
   1. Drainage importance and requirements
   2. Moisture variation in subgrade soil
   3. Surface, subsurface, and cross drainage
   4. Erosion control and energy dissipation measures
   5. Special drainage for hill roads
5. Highway Materials (11 hours)
   1. Highway materials classification
   2. Subgrade soil properties and CBR testing
   3. Road aggregate properties, testing, gradation analysis
   4. Bituminous binders: types and lab tests
   5. Bituminous mix types and design

Practicals

1. Standard CBR test (subgrade soil)
2. LA abrasion, crushing, impact, elongation, flakiness tests
3. Softening point, viscosity, penetration, ductility tests on bitumen
4. Gradation analysis of aggregate
5. Marshall mix design method (optimum binder content)
6. Bitumen extraction test