Autodesk 24108-051400-9000 - AutoCAD Revit Architecture Suite 2008 User Manual page 1190

If you want to
end the stair run with a riser
end the stair run with a tread
end the stair run with a landing
specify the exact radius for the spiral stair
define the radius for the stair dynamically
specify the overall linear length of the stair
1150 | Chapter 25 Stairs
Then
select Riser for Terminate with.
NOTE Stairs that end with a riser will have an overall height
that is one tread thickness less than the floor-to-floor height
specified.
NOTE If the vertical orientation is set to Down, Terminate
with is set to Riser and cannot be changed.
select Tread for Terminate with.
select Landing for Terminate with.
select No for Specify On Screen and enter a value for Radius.
select Yes for Specify On Screen.
select Calculation rules, and then enter a value for Straight
Length.
When Straight Length is set to
value is calculated based on the tread size and riser
count.
When Straight Length is
length is equal to the dimension entered, and the other
three values are adjusted within the code limits.
When Riser Count is user-defined, the tread depth is
increased or decreased to accommodate the stair.
(automatic), the
(user-defined), the stair