Positioning Curtain Wall in Section View
The input plane in the Section window coincides with the Section Plane. When you use an input method which extrudes the Curtain Wall from a Reference Line (such as the Polyline, Chained, or Curved methods), you must define starting point and the length of the extrusion. For this, use the options in the Place Curtain Wall on Section dialog box.
•To freely position the beginning of the extrusion by offsetting the starting point from the input plane: choose the first method. The first field is the absolute length of the extrusion; the third field is its offset from the input plane. (The sum of the two values is shown in the middle field.)
•To begin extruding the Curtain Wall “away” from you, at exactly the input plane (Section line): choose the second method and enter the length of extrusion. There is no offset (the Curtain Wall begins right at the input plane).
•To begin extruding the Curtain Wall “toward” you, at exactly the input plane (Section line): choose the fourth method and enter the length of extrusion.
•To place the midpoint of the extrusion vector at the input plane, choose the third option. Enter the total extrusion length in the first field below.