8

238 Chapter 5: Creating Geometry
Radius—
Controls the thickness of the r ailings.
U-Ty pe Sta ir
Create panel > Geometry > Stairs > U-Type Stair button
Create menu > AEC Objects > U-Type Stair
TheU-TypeStairobjectletsyoucreateatwo-flight
staircase, with the two flights parallel to each other
and a landing between them.
Types of U-type stair: open, closed, and boxed
U-type stairs have two flights in opposite directions, and
alanding.
Procedure
To create U-Type stairs:
1.
In any viewport, drag to set the length for the
firstflight. Releasethemousebutton,then
movethecursorandclicktosetthewidthof
the landing, or the distance separating the two
flights.
2. Clickandmovethecursorupordowntodefine
theriseofthestairs,thenclicktoend.
3. Adjust the stairs by using t he options in the
Parameters rollout.
Inter face
Parameters rollout > Type group
Open—Createsanopenriserstairasshownonthe
left in the illustration above.
Clo sed —Creates a closed riser stair as shown in the
center in the illustration abov e.
Box—Creates a stair with closed risers and closed
stringersonbothsidesasshownontherightinthe
illustration above.
Generate Geometry group
Stringers—Createsstringersalongtheendsof
the treads of the stairs. To modify the stringers’
depth, width, offset and spring f rom the floor, see
Stringers rollout (page 1–240) .
Carriag e—Creates an inclined, notched beam
under the treads which supports the steps or add s
support between the stringers of the stairs. You
might also k now this as a carr iage piece, a horse, or
aroughstring.See
Carr iage rollout (page 1–240)
to modify the p arameters.
Handrail—Createsleftandrighthandrails. See
Railings rollout (page 1–241) to modify the
handrails’ height, offset, number of segments, and
radius.
Rail Path—Createsleftandrightpathsyoucanuse
to install railings on the stairs. Se e
Stairs (page
1–226)
for the instructions on how to do this.