Basic Parameters Relevant to Horizontal Structures

When you add a horizontal structure, it has a default elevation, default positioning surface (top or bottom) and default reference line which have been defined in the basic building parameters. You can edit the parameter values as follows:

  1. Open the building's document browser.
  2. Right-click Settings.
  3. Select Edit Building Parameters.

Default elevation of horizontal structure

Following basic parameters define the default elevation of a horizontal structure in relation to the floor base height.

  • FLOOR_HEIGHT - Default elevation of floor.
  • CEIL_HEIGHT - Default elevation of ceiling.
  • ROOF_HEIGHT - Default elevation of roof eaves.
  • CTOP_HEIGHT- Default elevation of counter top.

When you add a horizontal structure, you can select a new elevation by using the functions in the auxiliary menu. The auxiliary functions to be used depend on the selected method of adding the structure.

Default positioning surface of horizontal structure

When you add a horizontal structure, the default positioning surface defines which surface, top or bottom, of the structure is positioned on the selected location and selected elevation.

  • FLOOR_HGT_LOC - Default positioning surface of floor.
  • CEIL_HGT_LOC - Default positioning surface of ceiling.
  • ROOF_HGT_LOC - Default positioning surface of roof.
  • CTOP_HGT_LOC - Default positioning surface of counter top.

The possible values of the parameters are 0 or 1.

  • 1 -> The top surface of the structure is positioned on the selected location.
  • 0 -> The bottom surface of the structure is positioned on the selected location.

Default reference line of horizontal structure

The default reference line is used when the shape of the structure is defined by selecting the walls around the structure, see Selecting walls. The parameter value is a line depicting a structural layer of a wall, for example EXTERIOR. When you add a horizontal structure, you can select a new reference line by using the function in the auxiliary menu.

  • FLOOR_EDGE_LINE - Default reference line of floor.
  • CEIL_EDGE_LINE - Default reference line of ceiling.