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List any four obligatory points that influence highway alignment .
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written 6.5 years ago by | • modified 5.1 years ago |
1) Obligatory points.
(i) points through which alignment is to pass
(ii) Points through which the alignment should not pass.
2) Traffic: The new road to be aligned should keep in view desire lines, anticipated traffic flow, classified traffic volume, their growth and future trends.
3) Geometric design: Factor such as gradient, radius of curve& sight distance also would govern the final alignment of highway.
4) Economics: The various factors are considered as
a) Initial construction cost
b) regular & periodic maintenance cost of the road.
5) Other considerations: which may govern either the horizontal or vertical alignment of road are drainage considerations.