Place stations

Place stations/landmarks and enter elevation data.

 

After finishing the horizontal curve alignment, the stations/landmarks on the horizontal design can thereafter be placed by using the landmark tool. Currently, the digital contour map consists of no digital elevation data. Users have to manually place stations/landmarks and elevation data on existing tangent points, start and end points, and every contour line that intersects with the road geometry design. Use the station/landmark tool   to locate a station from start (A) to end (B) point and enter the elevation of the station sequentially. (Warning: if stations/landmarks are not placed sequentially, the final design and road length will be incorrect.) After placing all stations and entering corresponding elevation info, the road geometry design will look similar to Figure 8(b) with stations/landmarks.

 

Tips: The stations/landmarks of the road design need to be placed sequentially from starting station to the last station. Stations should be placed on all points that contour curve and road curve intersect. Tangent point of curve and line segment should also be included. When placing a station/landmark near by a line and a curve, please make sure the selected location of the station/landmark belongs to the correct line/curve segment in the elevation data entry window as shown in Figure 8(a) or use the “Check Station Data” option under tool menu to verify the station data. Select the modify end point tool and use right mouse click on a tangent point to delete tangent pair point.

 

8(a) Enter landmark elevation data

 

Figure 8(b) Place stations or landmarks with elevation data

 

Use “Road Only” option under view menu bar or Control+Z to display only the horizontal roadway geometric design as shown in Figure 8(c). Use the “Road Design” option or Control+A to display the design view including the construction lines/curves.

 

Figure 8(c) Display final roadway geometry only

 

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