Defining The Vertical Curve Of Roadway; Roadway Setout - GPI -122 Instruction Manual

15.2 Defining the Vertical Curve of Roadway

The speciality of the roadway slope should be described by the vertial curve, there are three
attributes on the vertical curve—mileage, altitude and length, the mileage is representative
of the point where the slope is changed, the altitude is the altitude of the point where the
slope is changed ,the length indicate how much curve length is disigned to implement the
slope changing. the figure is shown as follow.
Mileage
Altitude
Length
The input method of defining vertical curve is just same as the horizontal I.P., see
【Procedure of defining Horizontal point of intersection】

15.3 Roadway setout

When you select road-setout function ,a menu named "road setout" is poped up. before
setout, you should do something:
1. Load a LINE-TYPE file from file to memory using menu item 1.if you have
defined a roadway just now then you cannot do it;
2. The coordinates of instrument station must be setup, you can use menu item 2
0
324,325
0
53
508,306
329,247
84,56
1000,48
325,689
52,806