TRANSPORTATION. HIGHWAY ENGINEERING.
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SYLLABUS CE 93 05 HIGHWAY ENGINEERINGL T P C 3 0 0 3 TOTAL L: 45
UNIT 1. HIGHWAY PLANNING AND ALIGNMENT 8
History of road development in India – Classification of highways – Institutions for Highway planning, design and implementation at different levels – factors influencing highway alignment – Engineering surveys for alignment, objectives, conventional and modern methods.
UNIT 2. GEOMETRIC DESIGN OF HIGHWAYS INCLUDING HILL ROADS 10
Typical cross sections of Urban and Rural roads – Lateral and vertical clearance at underpasses – Cross sectional elements – Horizontal curves, super elevation, transition curves, widening of curves – Sight distances – Vertical curves, gradients, hairpin bends – IRC standards
UNIT 3. DESIGN FLEXIBLE AND RIGID PAVEMENTS 9
Design principles – pavement components and their role - Design practice for flexible and rigid pavements, (IRC methods only).
UNIT 4. HIGHWAY CONSTRUCTION MATERIALS, EQUIPMENTS AND PRACTICE 8
Highway construction materials, properties, testing methods – Construction practice including modern methods, concrete road constructions (problem not included) - Highway drainage – Special considerations for hilly roads.
UNIT 5. EVALUATION AND MAINTENANCE OF PAVEMENTS 10
Pavement distress in flexible and rigid pavement – Pavement evaluation, roughness, present serviceability index, skid resistance, structural evaluation, evaluation by deflection measurements – Strengthening of pavements –Types of maintenance – IRC standards
Plank roads were typically constructed of wood planks two inches thick and eight feet long, which were nailed to four-inch-square stringers at a 90-degree angle.
CRF Act , 2000
Distribution of 100% cess on petrol as follows:
50% cess on diesel for Rural Road development
A constituent of Council of Scientific and Industrial Research (CSIR)
National highway act ( 1956 )
Based on the Traffic Volume
Based on Load or Tonnage
Class 1 or Class 2 etc or Class A , B etc Tonnes per day
Based on location and function ( Nagpur road plan )
Factors controlling alignment :
1) Obligatory points
A. Obligatory points through which alignment should pass through ( bridge site,
intermediate town , Mountain pass etc
B. Obligatory points through which alignment should not pass. (Religious Places,Lakes/Ponds
3) Geometric design
5) Other considerations
Adjustments in horizontal alignment can help reduce the potential for generating roadway sediment.
The objective is to minimize roadway cuts and fills and to avoid unstable areas.
When unstable or steep slopes must be traversed, adjustments in vertical alignment can minimize impacts and produce a stable road by reducing cuts and fills
Engineering Surveys for Highway locations at Different Levels
Provisional alignment Identification ( Map study)
Final location to determine center line and detailed survey
Scale -1: 2,50,000
Soil Profile at Different Levels
Balloon photography (1858) at Different Levels
Pigeon cameras (1903)
Kite photography (1890)
Aircraft (WWI and WWII)
Space (1947)Aerial Photos
IKONOS (1 m Panchromatic) at Different Levels
Landsat TM (False Color Composite)
LIDAR (Light Detection and Ranging)