Engineering Survey for Highway Assignment
In order decide and finalize the probabile alignment following survey are in use:-
In map study various alignments are drawn on map,passing through a minimum number of obstruction & men utilization areas.
It is done by visiting the location under consideration, to identify the features which are not available on the map or which are changed over the time period of time.
Feasibility is also checked for the possible alignment in this stage.
In this survey chain,compass,traveling work,soil investigation ,drawing ,provision,traffic studies are carried out & road alignment is finalized.
In this planning,designing cost estimation & material estimation is done and a detailed project resort is designed.
Geometric Design of Highways
This deals with highway dimension & layouts of visible features of highway, such that it provides man efficiency at minimum cost & reasonable safety.
Geometric design of highways deals with the following elements.
Sight distance considerations
Horizontal alignment details
Vertical alignment details
For designing of highway elements following factors are considered.