9

U-Type Stair 243
Radius—
Controls the thickness of the r ailings.
U-Ty pe Stai r
Create panel > Geometry > Stairs > U-Type Stair button
Create menu > AEC Objects > U-Type Stair
TheU-TypeStairobjectletsyoucreateatwo-flight
staircase, with the two flights paral lel 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 a
landing.
Procedure
To create U-Type stairs:
1.
In any viewport, drag to set t he 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 the 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 above.
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 from the floor, see
Stringers rollout (page 1–245).
Carri ag e—Creates an inclined, notched beam
under the treads which supports the steps or adds
support between the stringers of the stairs. You
might also k now this as a carr iage piece, a horse,
or a roughstring. See Carriage rollout (page 1–245)
to modify the p arameters.
Handrail—Createsleftandrighthandrails. See
Railings rollout (page 1–246) to modify the
handrails’ height, offset, number of segments, and
radius.
Rail Path—Createsleftandrightpathsyoucanuse
to install railings on the stairs. S ee Stairs (page
1–231) for the instructions on how to do this.