Interior Construction
use of wood door frames except to match wood doors in
specially designed areas.
Partitions. Partitions should be selected for use based on
Ceiling Suspension Systems. The design of suspension
the type of space and the anticipated activity within that
systems for acoustical ceilings must meet the requirements
space. For subdividing within tenant areas, preference
of ASTM C.635 for heavy-duty systems and ASTM C.636.
should be given to the use of pre-finished, demountable
When designing a suspended ceiling system with drop-in
partitions that can be easily relocated with a minimum of
components, such as lighting fixtures, specifications may
time and waste. The following should be evaluated: the
not be incorporated that can only be satisfied by hard
volume of people; their activities; the type, size, weight
metric versions of recessed lighting fixtures unless market
and function of equipment (mail carts, forklifts, etc.) that
research of cost and availability has been done as outlined
will be used in the space; and any free-standing, moveable
in Chapter One; General Requirements, Metric Standards,
or wall-mounted equipment that will impose lateral loads
Metric Policy Guidelines.
(built-ins, wall-mounted televisions, etc.).
Each potential wall system must be evaluated for
Building Specialties
structure, backing, finish and protection factors. GSA
prefers partition systems that are simple to construct,
Window Washing Equipment. Generally, window
made from readily available materials, economical and
washing and exterior maintenance are performed by
easily moved and reassembled by common laborers.
maintenance contracting firms that provide their own
powered platforms, scaffolding, or chair lifts to perform
Metal stud systems must meet the requirements ASTM
these functions. To accommodate the use of maintenance
C754. The application and finishing of gypsum board
equipment, suitable engineered systems shall be designed
should follow standard ASTM C840. Adequate tolerances
and incorporated into the building design. The design will
should be designed where the top of a partition abuts the
be for buildings three stories or 12,200 mm (40 feet) and
underside of the building structure; allow for deflection
higher, and shall conform to OSHA Standard 29 CFR
and long term creep.
1910.66, Subpart F - Powered Platforms, Manlifts, and
Partitions used at the perimeter of a humidified space
Vehicle-Mounted Work Platforms, ANSI Standard A120.1,
must include a vapor barrier. In computer rooms the need
Safety Requirements for Powered Platforms for Building
for air plenum dividers below the floors must be checked.
Maintenance, and ANSI Standard A39.1, Safety
Requirements for Window Cleaning.
in this chapter.
Waste Removal Equipment. Waste is normally removed
from GSA buildings by contract maintenance firms. The
Interior Doors. Interior doors in tenant spaces should be
firm will usually collect the waste from receptacles in the
flush, solid-core wood doors. Steel door frames should
occupied spaces into carts, which will be taken to larger
meet the requirements of SDI Recommended Erection
containers at the waste pick-up station. The firm will
Instructions for Steel Frames. Provide matching-edge
usually provide the containers as part of its contract.
veneers for transparent-finished wood doors. Avoid the
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ARCHITECTURAL
AND
INTERIOR
DESIGN
3.5
Building Elements
Revised March 2005 PBS-P100
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