Quantcast Erection Requirements

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are required for nuclear storage areas.  Ensure outriggers and barbed wire
conform to the requirements of RR-F-191/4.  Use ASTM A 121, Standard
Specification for Zinc-Coated (Galvanized) Steel Barbed Wire, or ASTM A 585,
Standard Specification for Aluminum-Coated Steel Barbed Wire, to supplement
Ensure accessories such as steel fittings and
components used in the erection of chain-link fences meet the requirements of
RR-F-191/4.  Use ASTM F 626 to supplement RR-F-191/4.  Provide fittings
electrolytically compatible with connecting fittings, components, and the
fence fabric to inhibit corrosion.
Erection Requirements.  The design of security fencing, using the
above specified components, will include the following provisions.  ASTM F
567, Standard Practice for Installation of Chain-Link Fence, may be used as
installation guidance to supplement RR-F-191/GEN.
Fence Placement.  Security fencing for restricted areas will
consist of a single-line fence surrounding the restricted area.  When
specified by the local commander, two single-line fences may be used to
provide additional deterrence.  The two fences should be separated by a
minimum of 30 feet (9.1 m) and a maximum of not more than 150 feet (45.7 m).
Buildings, structures, waterfronts, and other barriers can be used
as a part of a security fence line as long as they provide equivalent
protection to the fencing enclosing the restricted area.  Since security
fencing provides less than 10 seconds of penetration resistance, normal stud
and girt walls will provide at least 1 minute of penetration resistance
against a low threat level attack using limited hand tools.  The designer
should be primarily concerned with the windows and doorways in any wall or
structure that is, or will become, a portion of the security barrier.  Windows
and doors that are a part of the security barrier must provide penetration
resistance equal to the fence (as a minimum).  MIL-HDBK 1013/1 should be
consulted to determine the criteria required for windows and doors to provide
penetration resistance against a low threat level.
Where portions of structures are a part of the security barrier,
they must be capable of being easily observed by security personnel, i.e.,
guard facilities, CCTV, etc.  Structures and land topography (including
utility poles, trees, vines, steam pipes, etc.) will not be located so they
assist passage over, around, or under a fence.
Security fencing for nuclear weapons restricted areas will consist
of two single-line physical boundary fences separated by not less than 30 feet
(9.1 m) or not more than 150 feet (45.7 m). Do not use walls of structures
housing nuclear weapons or alert nuclear weapons systems as a part of a
security fence line.


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