8

Spiral Stair 231
Clo sed —
Creates a closed riser stair, a s shown in
the center of the illustration above.
Box—Creates a stair with closed r isers and closed
stringersonbothsides,asshownontherightof
the illustration above.
Generate Geometry group
Stringers—Createsstringersalongtheendsof
the treads of the stairs. To modify the stringers’
depth, width, offset and spr ing from the floor, see
Stringers rollout (page 1–232) .
Carriag e—Creates an inclined, notched beam
under the treads which supports the steps or adds
support between the stringers of the stairs. You
mightalsoknowthisasa
carr iage piece , ahorse ,or
a
rough string .See Carr iage rollout (page 1–233)
to modify the p ar ameters.
Center Pole—Creates a pole at the center of the
spiral. See
Center Pole rollout (page 1–233) to
modif y the parameters of the pole.
Handrail—Creates inside and outside handrails.
See
Railings rollout (page 1–234) to modify the
handrails’ height, offset, number of segments, and
radius.
Rail Path—Creates inside and outside paths which
you can use to install railings on the stairs. See
Stairs (page 1–226) for the instructions on how
to do this.
Layout group
CCW—Orients the spiral stairs to be a right-hand
flight of stairs.
CW —Orients the spiral stairs to be a left-hand
flight of stairs.
Left: CCW (counterclockwise) right-hand spiral stairs. The
arrow indicates “Up.”
Right: CW (clockwise) left-hand spiral stairs. The arrow
indicates “Up.”
Radius—Controlsthesizeoftheradiusofthe
spiral.
Revs—Controls the number of revolutions in the
spiral.
Width—Controls the width of the spiral stairs.
Rise group
3dsMaxkeepsoneRiseoptionlockedwhileyou
adjust the other two. To lock an option, click a
pushpin button. To unlock an option, click a
raised pushpin. 3ds Max locks the spinner value
of the parameter with the depressed pushpin and