1. Forging new generations of engineers

2. A Process for Road Layout Road Design

3. Check the existing Topographical data Road Design

4. Decide on the type of road and characteristics –Freeway –Arterial –Collector –Feeder Road Design

5. Setting up a chart for survey data and control points Road Design

6. Transit Line Setting up the 90° Intersection Road Design

7. Plan the Start of the Curve (PC) Road Design

8. Add information to the chart Road Design

9. Layout the Curve Road Design

10. Now Calculate the Unknowns about the curve. Curve information Knowns R=300’ ∆=33°34’ Road Design

11. To find the distance from P.C. to P.T. use the formula Road Design

13. Convert 33°34’ to degrees 34’/60’=.567 33°34’ =33.567° Road Design

14. Back to the Formula L=175.756’

15. Road Design Finding the angle of the 100’ chord (D) Bisect the angle to create a Right Triangle Inverse SinX=9.594° D=2(9.594°) D=19.1881° D=19°11’

16. Road Design Add information to the chart

17. Continue laying out the road and points Road Design

18. To create the vertical profile of the road, lines are dropped from the station points and an exaggerated vertical scale is created. Elevation data from existing station points are plotted to a graph.

19. A line is plotted through the points. The line is then smoothed and parabolic transitions are added between slopes. Road Design

20. Vertical information is transferred back to the control points.