Design of Highway
This article is about highway and transport engineering, this time we talk about the Design of Highway
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pict source: www.athulabuilders.com
Each state highway agency typically develops its own versions of specifications standard drawings, and plan preparation procedures based on the national guide lines adopted by American Association of State Highway and transportation Officials (AASHTO). The establishment and distribution of requirements for the design of highway facilities serves to ensure that uniform roadways are designed and constructed on a statewide basis. This statewide uniformity facilitates the understanding of engineering designs by road building contractors an significantly contributes to the implementation of consistent construction methods.
The elements of design are influenced by a wide variety of design controls, engineering criteria, and project specific objectives. Such factors include the following:
(source: Wright, P.H, with contributions by James S. Lai, Peter S.Parsonson, Michael Meyer., Highway Engineering, 6th edition ,John Wiley & Sons, Inc.New York, 1996.)
.jpg)
pict source: www.athulabuilders.com
Each state highway agency typically develops its own versions of specifications standard drawings, and plan preparation procedures based on the national guide lines adopted by American Association of State Highway and transportation Officials (AASHTO). The establishment and distribution of requirements for the design of highway facilities serves to ensure that uniform roadways are designed and constructed on a statewide basis. This statewide uniformity facilitates the understanding of engineering designs by road building contractors an significantly contributes to the implementation of consistent construction methods.
The elements of design are influenced by a wide variety of design controls, engineering criteria, and project specific objectives. Such factors include the following:
- functional classification of the roadway
- projected traffic volume and composition
- required design speed
- topography of the surrounding land
- capital costs for construction
- agency funding mechanisms
- human sensory capacities of roadway users
- vehicle size and performance characteristics
- traffic safety considerations
- public involvement, review, and comment
- environtmental considerations
- right of way impacts and costs
(source: Wright, P.H, with contributions by James S. Lai, Peter S.Parsonson, Michael Meyer., Highway Engineering, 6th edition ,John Wiley & Sons, Inc.New York, 1996.)
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