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HIGWAY ENGINEERING Session 05

HIGWAY ENGINEERING Session 05. Subject : S0012 / Introduction to Civil Engineering Year : 2007. Definition. Highway engineering is the branch of civil engineering  concerned with design of pavement structure, design of geometric alingment for safe highways and road.

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HIGWAY ENGINEERING Session 05

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  1. HIGWAY ENGINEERINGSession 05 Subject : S0012 / Introduction to Civil Engineering Year : 2007

  2. Definition Highway engineering is the branch of civil engineering  concerned with design of pavement structure, design of geometric alingment for safe highways and road. Highway engineering became popular after the World War in 20th Century

  3. Scope of Work • Pavement Engineering Design • Asphalt Testing Material • Geometric for Alignment Design • Road Construction

  4. Pavement Engineering Classification : • Flexible Pavement • Rigid Pavement • Composite

  5. Flexible Pavement • Flexible pavements. Those which are surfaced with bituminous / asphalt materials. These types of pavements are called "flexible" since the total pavement structure bends or deflects due to traffic loads. A flexible pavement structure is generally composed of several layers of materials which can accommodate this "flexing".

  6. P ( Load ) Surface Base Subbase Subgrade Flexible Pavement

  7. Rigid Pavement • Rigid pavements. Those which are surfaced with portland cement concrete (PCC). These types of pavements are called "rigid" because they are substantially stiffer than flexible pavements due to PCC's high stiffness.

  8. P ( Load ) Surface Subbase or base Subgrade Rigid Pavement

  9. Rigid Pavement JOINT

  10. Composite • Composite. Those which are surfaced with portland cement concrete (PCC) and bituminous / asphalt materials as overlay construction

  11. Asphalt Testing material Using for Testing asphalt material

  12. Geometric Design Vertical and Horizontal Alignmentbasic geometric elements of road design, including: chainage, profile grades, vertical curves, circular and spiral curves, and superelevation.  

  13. Road Construction – flexible pavement

  14. Road Construction – rigid pavement

  15. Subjects • Highway Engineering Learn about : • Pavement design • Geometric Design • Material design & testing (for Lab. activities )

  16. Projects Brazil USA

  17. Failure Construction Cracking Distress-USA Norwegia West Sumatra - Earthquake

  18. Social and environmental effects • Community cohesion: Where highways are created through existing communities, there can be reduced community cohesion and more difficult local access. Consequently property values have decreased in many cutoff neighborhoods, leading to decreased housing quality over time. • Noise Pollution  Highways generate more roadway noise thanarterial streets due to the higher operating speeds. • Air Pollution issues  Highways may contribute fewer emission than arterials carrying the same vehicle volumes. • HOV ( high Occupancy vehicle ) lanes

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