To Create a Point by Chainage Offset from a Survey Centerline

You can create a new point using an offset from a station on the current centerline.

To create a point by station offset in the Survey Command Window

1. In Toolspace, on the Survey tab, right-click the network to edit, and click Survey Command Window.
2. Click Centerline menu Chainage/Offset.
3. Enter the point identifier of the point you want to create.
   Note: If Auto point numbering is on, then the next point number is displayed.
4. Enter the station of the new point. The station can be a positive or a negative value.
5. Enter the offset of the new point. The offset can be a positive or a negative value.
6. Optionally, enter a description for the point.

To create a point at an offset, using the survey command language

1. In Toolspace, on the Survey tab, right-click the network to edit, and click Survey Command Window.
2. At the Command line, enter:

   CL TP (point 1) [station] (offset) (skew angle) (description)

Command Line Example

BEGIN CL1

NE 1 1000 1000

NE 2 1000 1500

NE 3 1300 1700

END

CL IS CL1

CL TP 100 200

! POINT 100 NORTH: 1000.0000 EAST: 1200.0000 LEVEL: <Null>

CL TP 101 450 -91.44

! POINT 101 NORTH: 1091.4400 EAST: 1450.0000 LEVEL: <Null>

102 600 152.4 50

! POINT 102 NORTH: 931.7283 EAST: 1572.2198 LEVEL: <Null>

Point 100 is located at station 200 with a zero offset. Point 101 is located at station 450 with a left offset distance of 91.44. Point 102 is located at station 600 with a right offset distance of 152.4 and a skew angle of 50.

Note: The point 102 input uses the Ditto command. Angles and distances are in the current units, unless you type a qualifying suffix.

Centerline point created by a station offset

Command Syntax

CL TP (point 1) [station] (offset) (skew angle) (description)

Parameter	Definition
point 1	The point identifier for the new point. You do not need to assign a point number if auto point numbering is on.
station	The station at which to set the point.
offset	An optional component that specifies the distance from the centerline to the new point. A negative offset sets the point to left of the centerline, and a positive offset sets it to the right.
skew angle	An optional component that specifies the clockwise angle to skew the point from the centerline to create non-perpendicular offsets. Type this value in the current angular units (DMS, grads, decimal degrees, radians, or mils).
description	An optional description associated with the point.