Scribd
Upload
101 views1 page

Minimum Radius Calculations

The minimum radius of a curve is dependent on the maximum superelevation rate, side-friction factor, and design speed of the road. Adjusting these parameters in the provided cells changes the minimum radius calculated and shown in the graph. For a design speed of 70 km/h, maximum superelevation of 2.5%, side-friction factor of 0.1, the minimum radius is calculated to be 514.4 meters.

Uploaded by

joebriffa
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
101 views1 page

Minimum Radius Calculations

The minimum radius of a curve is dependent on the maximum superelevation rate, side-friction factor, and design speed of the road. Adjusting these parameters in the provided cells changes the minimum radius calculated and shown in the graph. For a design speed of 70 km/h, maximum superelevation of 2.5%, side-friction factor of 0.1, the minimum radius is calculated to be 514.4 meters.

Uploaded by

joebriffa
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
You are on page 1/ 1

Theory & Concepts: If necessary, push the browser's BACK button to exit.

M inim um Radius (m )
Minimum Radius Calculations
220 5081.4
The minimum curve radius is dependent upon 180 3401.6
the superelevation rate, side-friction factor, and 150 2362.2 70 0
the design speed. Observe the interaction Curve
120 Radius vs. Design Speed
1511.8 70 514.4
6000
between these parameters by adjusting their 110 1270.3
values in the cells below and noting the changes 5000 90 850.4
in the graph at the right. 80 671.9
4000 70 514.4
60 378.0
3000
Max Superelevation rate (%): -2.5 50 262.5
Max Side-Friction Factor: 0.1 2000 40 168.0
Design Speed(km/h): 70 30 94.5
1000 20 42.0
Minimum Curve Radius (m): 514.4 10 10.5
0
0 50 100 150 200
Design Speed (km/h)

You might also like