TRANSPORTATION ENGINEERING I 10CV56 TRANSPORTATION ENGINEERING- I PART – A UNIT – 1 PRINCIPLES OF TRANSPORTATION ENGINEERING: Importance of transportation, Different modes of transportation and comparison, Characteristics of road transport Jayakar committee recommendations, and implementation – Central Road Fund, Indian Roads Congress, Central Road Research Institute 04 Hrs. UNIT – 2 HIGHWAY DEVELOPMENT AND PLANNING: Road types and classification, road patterns, planning surveys, master plan – saturation system of road planning, phasing road development in India, problems on best alignment among alternate proposals Salient Features of 3rd and 4th twenty year road development plans and Policies, Present scenario of road development in India (NHDP & PMGSY) and in Karnataka (KSHIP & KRDCL) Road development plan - vision 2021. 06 Hrs UNIT – 3 HIGHWAY ALIGNMENT AND SURVEYS: Ideal Alignment, Factors affecting the alignment, engineering surveys-Map study, Reconnaissance, Preliminary and Final location & detailed survey, Reports and drawings for new and re-aligned projects 04 Hrs. HIGHWAY GEOMETRIC DESIGN – I: Importance, Terrain classification, Design speed, Factors affecting geometric design, Cross sectional elements-Camber- width of pavementShoulders-, Width of formation- Right of way, typical cross sections 05 Hrs. UNIT – 4 HIGHWAY GEOMETRIC DESIGN – II: Sight Distance-Restrictions to sight distance- Stopping sight distance- Overtaking sight distance- overtaking zones- Examples on SSD and OSD- Sight distance at intersections, Horizontal alignment-Radius of Curve- Super elevation – Extra widening- Transition curve and its length, setback distance – Examples, Vertical alignment-Gradient-summit and valley curves with examples. 07 Hrs.
10CV56 TRANSPORTATION ENGINEERING I PART - B UNIT – 5 PAVEMENT MATERIALS: Subgrade soil – desirable properties-HRB soil classification-determination of CBR and modulus of subgrade reaction-Examples on CBR and Modulus of subgrade reaction, Aggregates- Desirable properties and list of tests, bituminous materials-Explanation on Tar, bitumen, cutback and emulsion-List of tests on bituminous materials 06 Hrs. UNIT – 6 PAVEMENT DESIGN: Pavement types, component parts of flexible and rigid pavements and their functions, design factors, ESWL and its determination-Examples, Flexible pavement- Design of flexible pavements as per IRC;37-2001-Examples, Rigid pavement- Westergaard’s equations for load and temperature stresses- Examples- Design of slab thickness only as per IRC:58-2002 06 Hrs. UNIT – 7 PAVEMENT CONSTRUCTION: Earthwork –cutting-Filling, Preparation of subgrade, Specification and construction of i)Granular Subcase, ii) WBM Base, iii) WMM base, iv)Bituminous Macadam, v) Dense Bituminous Macadam vi) Bituminous Concrete, vii) Dry Lean Concrete sub base and PQC viii) concrete roads 05Hrs HIGHWAY DRAINAGE: Significance and requirements, Surface drainage system and design-Examples, sub surface drainage system, design of filter materials 03 Hrs. UNIT – 8 HIGHWAY ECONOMICS: Highway user benefits, VOC using charts only-Examples, Economic analysis - annual cost method-Benefit Cost Ratio method-NPV-IRR methods- Examples, Highway financing-BOTBOOT concepts 06 Hrs.
TRANSPORTATION ENGINEERING, I CHAPTER 1 10CV56 HIGHWAY DEVELOPMENT AND PLANNING Highway development in India Necessity for highway planning Different road development plans Classification of roads Road network patterns Highway Alignment Factors affecting alignment Engineering surveys Drawing and reports Highway project. Page 3
TRANSPORTATION ENGINEERING I 10CV56 CHAPTER 1 PRINCIPLES OF TRANSPORTATION ENGINEERING Overview Road transport is one of the most common modes of transport. Roads in the form of track ways, human pathways etc. were used even from the pre-historic times. Since then many experiments were going on to make the riding safe and comfort. Thus road construction became an inseparable part of many civilizations and empires. In this chapter we will see the different generations of road and their characteristic features. Also we will discuss about the highway planning in India. History of highway engineering The history of highway engineering gives us an idea about the roads of ancient times. Roads in Rome were constructed in a large scale and it radiated in many directions helping them in military operations. Thus they are considered to be pioneers in road construction. In this section we will see in detail about Ancient roads, Roman roads, British roads, French roads etc. Ancient Roads The rst mode of transport was by foot. These human pathways would have been developed for speci c purposes leading to camp sites, food, streams for drinking water etc. The next major mode of transport was the use of animals for transporting both men and materials. Since these loaded animals required more horizontal and vertical clearances than the walking man, track ways emerged. The invention of wheel in Mesopotamian civilization led to the development of animal drawn vehicles. Then it became necessary that the road surface should be capable of carrying greater loads. Thus roads with harder surfaces emerged. To provide adequate strength to carry the wheels, the new ways tended to follow the sunny drier side of a path. These have led to the development of foot-paths. After the invention of wheel, animal drawn vehicles were developed and the need for hard surface road emerged. Traces of such hard roads were obtained from various ancient civilization dated as old as 3500 BC. Page 4