Open stairways that connect lobby and atrium spaces
General Requirements. Where internal stairways are used
should be appropriately finished in materials that
for both general vertical circulation and emergency egress,
match or relate to the adjacent surfaces in quality and
finishes should be consistent with the floors being served
by the stair. In stairways used for utility purposes or only
for emergency egress, unfinished or minimally finished
Floors. Floor finishes for open stairs should match
surfaces are appropriate.
coordinate with the adjoining lobby and atrium spaces
served by these stairs.
Floors. In general circulation stairs, flooring for stairways,
treads, and landings should provide acoustic control.
Resilient materials are most appropriate and shall be
combined with a non-slip nosing on the treads; these
Floors. Public corridors adjacent to building entrances,
must be non-combustible. These surfaces should be
atria, etc., which carry significant foot traffic and provide
coordinated with materials of the floors, which the stair
major circulation pathways throughout the building shall
serves. Utility and egress-only stairs should be of
have materials selected that shall be extremely durable
unfinished, sealed concrete or steel. Always provide non-
and require low maintenance. To improve acoustic control
in corridors adjacent to work spaces, hard, reflective
surfaces should be avoided.
Walls. Wall surfaces in these areas should be drywall
substrate with a simple, straightforward finish such as
Walls. Walls in public corridors should receive a wall
paint or wall covering. In utility and egress stairs, provide
covering over a drywall substrate.
a painted or unfinished surface.
Ceilings. Accessible acoustical ceilings should be selected
Ceilings. Absorptive materials are desirable in stairways
for corridors. Use a high quality system in public areas.
for their acoustic effect. Stair runs should have painted
Avoid inaccessible (sealed) ceiling systems. Submit
gypsum board soffits where appropriate.
alternative proposals to design team.
Doors. Doors between adjacent building areas and
Doors. Doors along public corridors should be of a
stairways should match other doors in the building areas.
quality equivalent to that of other elements in these
The doors should have the same finish on the interior
spaces and higher quality than those in the interior
and the exterior. Utility and egress stair doors should be
spaces. Finish may be wood veneer. The finish on both
sides of the door should match. At interior spaces with
high levels of public use provide glazed entry door
systems along public corridors.
Revised March 2005 PBS-P100