higway engineering session 05
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HIGWAY ENGINEERINGSession 05
Subject : S0012 / Introduction to Civil EngineeringYear : 2007
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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
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Scope of Work
• Pavement Engineering Design• Asphalt Testing Material• Geometric for Alignment
Design• Road Construction
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Pavement Engineering
Classification :1.Flexible Pavement2.Rigid Pavement3.Composite
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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".
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Flexible PavementSurface
Base
Subbase
Subgrade
P ( Load )
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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.
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Rigid Pavement
Surface
Subbase or base
Subgrade
P ( Load )
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Rigid Pavement
JOINT
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Composite• Composite. Those which are surfaced with
portland cement concrete (PCC) and bituminous / asphalt materials as overlay construction
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Asphalt Testing material
Using for Testing asphalt material
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Geometric Design
Vertical and Horizontal Alignmentbasic geometric elements of road design, including: chainage, profile grades, vertical curves, circular and spiral curves, and superelevation.
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Road Construction – flexible pavement
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Road Construction – rigid pavement
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Subjects
• Highway EngineeringLearn about :– Pavement design– Geometric Design– Material design & testing (for
Lab. activities )
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Failure Construction
West Sumatra - EarthquakeNorwegia
Cracking Distress-USA
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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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