UFC 4-010-01
8 October 2003
By doing so, the doors will seat into the door frames in response to an explosive blast,
increasing the likelihood that the doors will not enter the buildings as hazardous debris.
Alternatively, position doors such that they will not be propelled into rooms if they fail in
response to a blast or provide other means to ensure they do not become hazards to
building occupants.
B-3.4
Standard 13. Mailrooms. The following measures address the location
of rooms to which mail is delivered or in which mail is handled in new and existing
inhabited buildings. The measures involve limiting collateral damage and injuries and
facilitating future upgrades to enhance protection should they become necessary.
B-3.4.1
Location. Where a new or existing building covered by these standards
must have a mailroom, locate that mailroom on the perimeter of the building. By
locating the mailroom on the building perimeter there is an opportunity to modify it in the
future if a mail bomb threat is identified. Where mailrooms are located in the interior of
buildings, few retrofit options are available for mitigating the mail bomb threat.
B-3.4.2
Proximity. Locate mailrooms as far from heavily populated areas of the
building and critical infrastructure as possible. This measure will minimize injuries and
damage if a mail bomb detonates in the mailroom. Further, it will reduce the potential
for wider dissemination of hazardous agents. These apply where the mailroom is not
specifically designed to resist those threats.
B-3.4.3
and radiological agents introduced into mailrooms, ensure that mailrooms are well
sealed between their envelopes and other portions of the buildings in which they are
located. Ensure the mailroom walls are of full height construction that fully extends and
is sealed to the undersides of the roofs, to the undersides of any floors above them, or
to hard ceilings (i.e. gypsum wallboard ceiling.) Sealing should include visible cracks,
the interface joints between walls and ceilings/roofs, and all wall and ceiling/roof
penetrations. Doors will have weather stripping on all four edges. Refer to the DoD
Security Engineering Design Manual for additional guidance.
B-3.5
Standard 14. Roof Access. For all new and existing inhabited buildings
covered by these standards, control access to roofs to minimize the possibility of
aggressors placing explosives or chemical, biological, or radiological agents there or
otherwise threatening building occupants or critical infrastructure.
B-3.5.1
New Buildings. For new buildings eliminate all external roof access by
providing access from internal stairways or ladders, such as in mechanical rooms.
B-3.5.2
Existing Buildings. For existing buildings, eliminate external access
where possible or secure external ladders or stairways with locked cages or similar
mechanisms.
B-3.6
Standard 15. Overhead Mounted Architectural Features. For all new
and existing buildings covered by these standards, ensure that overhead mounted
features weighing 14 kilograms (31 pounds) or more are mounted to minimize the
likelihood that they will fall and injure building occupants. Mount all such systems so
B-11
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