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highway_geometric_design_summary

highway_geometric_design_summary - CEE 3604 Transportation...

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Transportation Engineering (A.A. Trani) CEE 3604 Transportation Geometric Design Highways 1
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Transportation Engineering (A.A. Trani) History Roads have been developed in ancient cultures for trade and military reasons Silk Road - 6000 km in length Appian Road - Rome to Brindisi (Italy) 2 Source: Wikipedia
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Transportation Engineering (A.A. Trani) Types of Alignments Horizontal Vertical 3
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Transportation Engineering (A.A. Trani) The Concept of Station The position of a specific point on a highway is traditionally determined using concept of stations A datum point on a highway alignment is specified. This initial point is designated station 0+ 000.000. The positions of all other points on the highway are calculated by measuring corresponding distances on a horizontal plane along the highway from the initial point For example, the point on a highway located 2345.6 m from the previously specified point, is designated station 2 + 345.600 4
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Transportation Engineering (A.A. Trani) Vertical Alignment Vertical alignment is composed of straight sections that are connected by vertical curves These straight sections are called grades or tangents
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