Highway-Design-Data-Hand-Book.pdf - JSS Mahavidyapeetha Sri Jayachamarajendra College Of Engineering Mysuru \u2013 570 006 HIGHWAY ENGINEERING DESIGN DATA

Highway-Design-Data-Hand-Book.pdf - JSS Mahavidyapeetha Sri...

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JSS Mahavidyapeetha Sri Jayachamarajendra College Of Engineering Mysuru – 570 006 HIGHWAY ENGINEERING DESIGN DATA HAND BOOK (Geometric Design and Pavement Design) Compiled By Dr. P. Nanjundaswamy Professor of Civil Engineering DEPARTMENT OF CIVIL ENGINEERING 2015
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CONTENTS Page No. 1 GEOMETRIC DESIGN STANDARDS FOR NON-URBAN HIGHWAYS 1 – 9 1.1. Classification of Non-Urban Roads 1 1.2. Terrain Classification 1 1.3. Design Speed 1 1.4. Cross Section Elements 2 1.4.1 Cross Slope or Camber 2 1.4.2 Width of Pavement or Carriageway 2 1.4.3 Width of Roadway or Formation 2 1.4.4 Right of Way 3 1.5. Sight Distance 3 1.5.1 Stopping Sight Distance (SSD) 3 1.5.2 Overtaking Sight Distance (OSD) 3 1.6. Horizontal Alignment 4 1.6.1 Superelevation 4 1.6.2 Widening of Pavement on Horizontal Curves 6 1.6.3 Horizontal Transition Curves 7 1.6.4 Set-back Distance on Horizontal Curves 8 1.7. Vertical Alignment 8 1.7.1 Gradient 8 1.7.2 Length of Summit Curve 9 1.7.3 Length of Valley Curve 9 2 DESIGN OF FLEXIBLE PAVEMENTS 10 – 18 2.1 Design Traffic 10 2.2 Traffic growth rate 10 2.3 Design Life 10 2.4 Vehicle Damage Factor 11 2.5 Distribution of Commercial traffic over the carriageway 11 2.6 Design Criteria 12 2.7 Design Criteria 12 2.8 Design Charts and Catalogue 13 2.9 Pavement Composition 18 2.10 Final Remarks 18
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3 ANALYSIS AND DESIGN OF RIGID PAVEMENTS 19 – 34 3.1 Modulus of Subgrade Reaction 19 3.2 Radius of Relative Stiffness 19 3.3 Equivalent Radius of Resisting Section 19 3.4 Critical Load Positions 20 3.5 Stresses and Deflections due to Wheel Load 20 3.5.1 Corner Loading 20 3.5.2 Interior Loading 21 3.5.3 Edge Loading 21 3.5.4 Dual Tires 22 3.6 Temperature Stresses 23 3.6.1 Warping Stresses (Westergaard Analysis) 23 3.6.2 Frictional Stresses 24 3.7 IRC Recommendations for Design of Plain Jointed Rigid 25 3.7.1 Legal Axle Load Limits 25 3.7.2 Load Safety Factors 25 3.7.3 Tyre Pressure 25 3.7.4 Design Period 25 3.7.5 Design Traffic 25 3.7.6 Characteristics of Sub-grade 26 3.7.7 Characteristics of Concrete 27 3.7.8 Fatigue Behaviour of Cement Concrete 27 3.7.9 Stress Computations 28 3.7.10 Temperature Differential 28 3.7.11 Recommended Design Procedure for Slab Thickness 28 3.7.12 Design of Joints 29 REFERENCES
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1 1. GEOMETRIC DESIGN STANDARDS FOR NON-URBAN HIGHWAYS (IRC: 73-1980) 1.1 CLASSIFICATION OF NON-URBAN ROADS Non-urban roads in India are classified into following five categories based on location and function according to Nagpur road plan: National Highways (NH) State Highways (SH) Major District Roads (MDR) Other District Roads (ODR) Village Roads (VR) Present system follows modified classification system as per third 20-year road development plan. The roads are now classified into following three classes, for the purpose of transport planning, functional identification, earmarking administrative jurisdictions and assigning priorities on a road network: Primary system o Expressways and National Highways (NH) Secondary system o State Highways (SH) and Major District Roads (MDR) Tertiary system (Rural Roads) o Other District Roads (ODR) and Village Roads (VR) 1.2 TERRAIN CLASSIFICATION Table 1.1 Classification of terrains Terrain Classification
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