Adjusting Wall Reference Lines and Settings; Split Level and Multi-Story Options

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ARCHICAD Training Lesson Outline


Use the Edit menu > Reference Line and Plane > Modify Wall Reference Line command to reposition the reference line without moving the wall.

This acts in a different fashion than using the Flip option in the Wall Settings or Info Box; it does not change the placement of the wall body on the plan.

This command has several use cases:

  • to make walls clean up to each other

  • to avoid having ARCHICAD clean up walls that touch each other

  • when changing wall type (from Basic to Composite, or Composite to Profile)

  • when changing wall settings


Walls can be placed at any elevation relative to the active story. For split levels, this means that their base may be offset from the 0 by a small amount or any amount within the story overall height.

This can cause issues with display of doors and windows on a plan drawing, if the Floor Plan Display is set to Projected or related options.

Symbolic display options will bypass this issue, although they prevent the creation of Clerestory plans since all doors and windows are shown regardless of cutting plane.

A workaround for this issue is to create multiple plan views and place them side by side on a layout sheet; each one has the appropriate cutting plane for the section of the building it includes.


Walls can span multiple stories, and the Floor Plan and Section settings allows them to be seen on All Relevant Stories.

Windows and Doors can be anchored to Wall Base or Story Level. The Story Level option is the simplest method for designs with a consistent facade elevation for the openings.

Windows can be dragged and multiplied across co-planar walls (stacked, side by side or separated) and of course within a multiple story wall.

Windows that span two stories (e.g. in a stairwell) can be handled easily with a double-height wall. However there is a method for dragging a copy from the lower wall to the upper wall of stacked walls, then repositioning the upper copy to superimpose the lower one, and exploding it to get a clean 2D plan view of the upper wall without creating a duplicate window in the schedule.

Tilted walls and Profile Walls may require use of Projected plan settings to give the most accurate and appropriate drawings.

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