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<< Click to Display Table of Contents >> Draw Alignment |
  
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<< Click to Display Table of Contents >> Draw Alignment |
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Purpose
To draw a 2D Polyline representing a horizontal alignment (e.g. proposed centre-line). Note that the direction of the Polyline will define the direction of increase of chainage (to reverse use Polyline utilities, Reverse direction).
Operation
Return to accept default layer or enter alternative. This is now the CAD Pline command so pick a point to fix the start. For typical use the second vertex will define a straight (e.g. enter @12.5<225 to fix length and direction) and then define a tangential arc with "A". To define a tangential straight from an arc element type "L" Return, "L" Return.
