UFC 4-010-01
8 October 2003
Including change 1, 22 January 2007
Table 2-1 Levels of Protection New and Existing Buildings
Level of
Potential Building
Potential Door and
Potential Injury
Protection
Damage / Performance
Glazing
2
Hazards3
Severe damage.
Doors and windows will fail
Majority of personnel in
Below AT
standards1
Progressive collapse likely.
catastrophically and result
collapse region suffer
Space in and around
in lethal hazards. (High
fatalities. Potential fatalities
damaged area will be
hazard rating)
in areas outside of collapsed
unusable.
area likely.
Heavy damage - Onset of
Glazing will fracture, come
Majority of personnel in
Very Low
structural collapse, but
out of the frame, and is
damaged area suffer serious
progressive collapse is
likely to be propelled into
injuries with a potential for
unlikely. Space in and
the building, with the
fatalities. Personnel in areas
around damaged area will
potential to cause serious
outside damaged area will
be unusable.
injuries. (Low hazard
experience minor to
rating)
moderate injuries.
Doors may be propelled
into rooms, presenting
serious hazards.
Moderate damage
Glazing will fracture,
Majority of personnel in
Low
Building damage will not be
potentially come out of the
damaged area suffer minor
economically repairable.
frame, but at a reduced
to moderate injuries with the
Progressive collapse will
velocity, does not present a
potential for a few serious
not occur. Space in and
significant injury hazard.
injuries, but fatalities are
around damaged area will
(Very low hazard rating)
unlikely.. Personnel in areas
be unusable.
Doors may fail, but they will
outside damaged areas will
rebound out of their frames,
potentially experience a
presenting minimal
minor to moderate injuries.
hazards.
Minor damage Building
Glazing will fracture, remain
Personnel in damaged area
Medium
damage will be
in the frame and results in a
potentially suffer minor to
economically repairable.
minimal hazard consisting
moderate injuries, , but
Space in and around
of glass dust and slivers.
fatalities are unlikely.
damaged area can be used
(Minimal hazard rating)
Personnel in areas outside
and will be fully functional
Doors will stay in frames,
damaged areas will
after cleanup and repairs.
but will not be reusable.
potentially experience
superficial injuries.
Minimal damage.
Glazing will not break.
Only superficial injuries are
High
No permanent
(No hazard rating) Doors
likely.
deformations. The facility
will be reusable.
will be immediately
operable.
Notes:
1. This is not a level of protection, and should never be a design goal. It only defines a realm of more
severe structural response, and may provide useful information in some cases.
2. For damage / performance descriptions for primary, secondary, and non-structural members, refer to
UFC 4-020-02, DoD Security Engineering Facilities Design Manual.
3. Glazing hazard levels are from ASTM F 1642.
2-7
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