Cornerstone
No building element may be supported by the roofing
system except walkways. Provide walkways on the roof
A cornerstone is required for all new buildings as a part of
along routes to and around equipment for maintenance.
the exterior wall. The cornerstone should be a cut stone
block having a smooth face of size adequate to present the
Skylights and Sloped Glazing. Skylights are defined as
following incised letters: UNITED STATES OF AMERICA,
pre-fabricated assemblies shipped ready for installation,
(PRESIDENT'S NAME), PRESIDENT, GENERAL
while sloped glazing is defined as field-assembled.
SERVICES ADMINISTRATION, (ADMINISTRATOR'S
Skylights design shall follow the guidelines of the AAMA
NAME), ADMINISTRATOR, (YEAR OF PROJECT
Standard 1600. For the design of sloped glazing, two
COMPLETION). The words, UNITED STATES OF
AAMA publications are available: Glass Design for Sloped
AMERICA, should be in letters 50 mm (2 inches) high
Glazing and Structural Design Guidelines for Aluminum
and other letters should be proportionally sized by rank.
Framed Skylights.
All names should be of those individuals in office at the
Skylights and sloped glazing should use low emissivity
time construction funds were appropriated, if
glass. Placement should be calculated to prevent glare or
construction is completed during a subsequent President's
overheating in the building interior. Condensation gutters
term of office.
and a path for the condensation away from the framing
should be designed.
Consideration shall be given to cleaning of all sloped
glazing and skylights, including access and equipment
required for both exterior and interior faces. See also
Building Elements, Cladding and Articulation and The
Buildings Specialties, Window Washing Equipment sections
of this chapter.
Thermographic Testing. In order to verify performance
related to the design intent of the exterior building
envelope, regarding thermal resistivity, thermographic
testing shall be performed at various conditions on the
finished construction and before occupancy. This testing
will verify that the actual construction meets the
requirements as specified.
Postal Square, AOC Workstation
86 F A C I L I T I E S S T A N D A R D S
FOR THE
PUBLIC
BUILDINGS
SERVICE
3.5 Building Elements
Revised March 2005 PBS-P100
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