BASE AND TOP LEVELS: Stairs are based on selected levels that already exist in the project. You can add an offset on these levels if required.
DESIRED STAIR HEIGHT: Total distance between the base and the top of the stairs, including offsets.
DESIRED NUMBER OF RISERS: Automatically calculated by Revit, dividing Stair Height by Maximum Riser Height.
ACTUAL NUMBER OF RISERS: The number of risers you modeled so far.
MAXIMUM RISER HEIGHT: Riser height for your stair will never go above this value.
ACTUAL RISER HEIGHT: This distance is automatically calculated by Revit, dividing the Stair Height by the Desired Number of Risers.
MINIMUM TREAD DEPTH: specify the minimum tread depth & we can go above this number, but not below.
ACTUAL TREAD DEPTH: By default, this value is equal to minimum tread depth set in the stair type.
MINIMUM RUN WIDTH: Set on the stair type, you can specify the minimum run width.
ACTUAL RUN WIDTH: By default, this will be the same as the minimum run width.