Stair Tool Icon_PrimitiveShapes_Stair

Creates stairs like you create a box. The stair created with this tool has a uniform rise no matter how high the stair is.


  1. Select Stair Tool

  2. Draw a rectangle by dragging the mouse.

  3. Release LMB and move the mouse up in a normal direction to raise the height.

  4. Click LMB to stop raising.

  5. If necessary, type the precise sizes in Width, Depth, Height and Rise fields in Properties or turn on or off Wide Steps or Reverse to change the stair’s direction

  6. Press SPACE to complete or Press ESC to cancel.


LMB Drag

Starts and draws a bottom rectangle of a stair


Completes creating a stair


Cancels creating a stair


Select Only Visible

If on, the shape can be built on only a visible polygon. Namely backfaced or occluded polygons are excluded.

Floor Height

The height of the floor where the primitive shape is built by LMB Dragging.


The entire width of a stair


The entire depth of a stair


The entire height of a stair.


Distance between two neighbor treads.

Wide Step

Rotates the stair by 90 degrees.


Reverses the front and back.

Border Check

If this is enabled, the ray cast will run and it checks if the created stair is beyond the other polygons. It might cause a stop for a second at the beginning.


The stair with this property enabled will be glued to the polygon where it started to be created. It means that the hidden part of the floor polygon by the created stair is removed.


A Stair created on the floor.


As Wide Step property is on, the steps will get toward the wide side by 90 degrees rotation.