Page 728 - Chief Architect Reference Manual

Chief Architect X10 Reference Manual

drawn at a 1:12 slope to a maximum height the object that you want, then click in any
of 30” (760 mm). See “Drawing Stairs and view to place it in the plan. See “The
Ramps” on page 729. Library” on page 921.
Because spiral staircase symbols are fixture
Spiral Stairs
symbols, they do not have an Auto Stairwell
In the Library Browser, browse to edit tool. An opening in the floor above a
Chief Architect Core Catalogs> spiral staircase must be created manually.
Architectural> Spiral Stairs to access a See “Creating a Stairwell” on page 750.
selection of spiral staircase fixtures. Select

Anatomy of a Staircase

Stairs, as well as ramps, are often described Riser - The vertical stair member located
in terms of rise and run. Rise is typically between the treads. Risers may be solid or
between 6" and 8", and the run between 10" open. When open, the front surfaces of the
and 12". In metric plans, rise is 177 to 190 stringers are considered the risers.
mm, and the run is about 250 mm.
Run - The depth of a tread, measured from
riser surface to riser surface. Run does not
Staircase Terminology
include the Tread Overhang. Also referred to
Balusters - The vertical members that run as Unit Run.
between the handrail and the treads or Runner - The carpet that runs down the
bottom rail. center of the staircase.

Bracket - Decorative L-shaped supports on Shoe - The bottom railing, placed on the
the exposed side of stairs below each tread. landing floor, that anchors the balusters at
Landing - A platform connecting two or landings.
more stair sections. Stringer - The inclined support member of a
Newels - The end post of a stair railing staircase that supports the treads and risers.
located at landings and the beginnings and Tread - The horizontal member of a stair that
endings of new stair sections. the foot is placed on.

Rise - The height of a riser, measured from Tread Overhang - The portion of a tread
tread surface to tread surface, Also referred extending past the front surface of the riser
to as Unit Rise. and over the tread below. Also referred to as

Rise Angle - The angle of the staircase or Nosing or Nosing Extension, it is not
stair section, defined by a line drawn through included in the Run or Tread Depth
the back surfaces of its treads. measurements.
Tread Thickness - The vertical depth of the
tread material.

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