Profile Designing Management.
Vertical Curves
Where is a vertical curve required
Where the algebric difference of two grade is greater than 0.5%
Where the algebraic difference in grades is 0.5% or less there curve is not required.
Vertical curves are used to provide a gradual change from one road slope to another, so that vehicles may smoothly navigate grade changes as they travel.
Vertical Curves
Where is a vertical curve required
Where the algebric difference of two grade is greater than 0.5%
Where the algebraic difference in grades is 0.5% or less there curve is not required.
The Minimum Length of Vertical Curves
The minimum length of vertical curve in meters should be equal to 2V,
Where V = design speed.
As an example, a 100 km/h design speed would require a 200 m minimum vertical curve length.
As per AASHTO for the speed of 60 km /h
Minimum curve length is required 36m
And K is required 11
And stopping distance required 85 m
Minimum curve length is required 36m
And K is required 11
And stopping distance required 85 m
Grade breaks should not be closer together than 15 m and a total of all grade breaks within 60 m should not exceed 0.5%.
