UFC 4-010-01
8 October 2003
2-4.5.3
Operational Option for Existing Buildings. Because moving parking
and roadways associated with existing buildings or applying structural retrofits to harden
those buildings may be impractical, operational options are provided for complying with
the standoff distance requirements for existing parking and roadways associated with
existing buildings. Those operational options allow for establishing access control for
parking at the applicable standoff distances in either Table B-1 or Table D-1, in which
case parking can be allowed to be as close as 10 meters to buildings without hardening
or analysis. The access control in those situations must be established at a location in
accordance with Tables B-1 or D-1. The assumption is that by establishing access
control into the parking lot, there will be a lesser opportunity to enter the parking area
with an explosive in a vehicle. For roadways, the operational option is to prohibit
parking along roadways within the standoff applicable distances in Tables B-1 and D-1.
These operational options will result in increased risk for existing buildings, but
acceptance of that risk is necessary to make application of these standards to existing
buildings practical. The additional option for allowing parking even close than 10 meters
(33 feet) as long as the applicable level of protection is met, is based on the recognition
that there may be some buildings, especially in urban areas, where achieving even 10
meters (33 feet) is not possible.
2-4.5.4
Temporary and Expeditionary Construction. The standoff distances in
Table D-1 are based on blast testing conducted against TEMPER Tents, SEA Huts,
General Purpose Shelters, and Small Shelter Systems. With adequate analysis those
distances may be able to be reduced without requiring mitigating measures.
2-4.6
Exempted Building Types. For the reasons below, some building types
are exempted from some or all of these standards. The minimum standards should be
applied to the exempted building types where possible.
2-4.6.1
Family Housing. The exemption of family housing with 12 units or fewer
in a single building acknowledges that the density of such units is generally low,
reducing the likelihood of mass casualties. It also acknowledges the fact that low-
density housing has rarely been directly targeted by terrorists. A further assumption for
existing family housing with 13 or more units per building is that by designating parking
spaces for specific residents or residences, the risk of parking vehicle bombs in those
parking areas is reduced due to increased awareness of the vehicles that are
authorized to park there.
2-4.6.2
Stand-Alone Franchised Food Operations, Shoppettes, Mini Marts,
Similarly Sized Commissaries, and Other Small Stand Alone Commercial
Facilities. These facilities by the nature of their smaller size and their operation require
parking in close proximity; therefore, they are exempted from the minimum standoff
distances for parking and roadways. Applying other upgrades required by these
standards is feasible, however, and will lessen the risk of mass casualties.
2-4.6.3
Gas Stations and Car Care Centers. These facilities are exempted from
these standards because, by the nature of their operation, cars must be allowed to be in
close proximity to them. Other measures included in these standards would be
ineffective in the absence of any control on vehicles.
2-8
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