MIL-HDBK-1024/1
construction. The facility configuration and location; the use of barriers,
protective lighting, type of construction, IDS, closed circuit television
(CCTV), and security fencing; and the guard communication network shall be
coordinated with the user to ensure conformance with the installation security
plan. The mode of operation, level of security, and designer's responsibility
for particular security elements will be designated in the BESEP and IDSEP.
2.6.2
Exterior Physical Security. External security requirements in most
cases depend on the internal security measures provided in the facility design
and on the type of protection required. Normally, external considerations,
including building location and orientation and the use of protective barriers
and lighting, are developed as part of the facility's security plan and
specified in the BESEP. Defense Intelligence Agency DIAM 50-3, Physical
Security Standards for Construction of Sensitive Compartmented Information
Facilities, MIL-HDBK-1013/1, Design Guidelines for Physical Security of Fixed
Land-Based Facilities, and MIL-HDBK-1013/10, Design Guidelines for Security
Fencing, Gates, Barriers, and Guard Facilities, should be the primary criteria
sources for design of the required facilities.
2.6.2.1
Perimeter Fencing. Use chain-link fencing for permanent areas. Use
general-purpose barbed tape obstacle for temporary installations or where the
terrain does not allow construction of chain-link fencing. Dual perimeter
barriers are described in DIAM 50-3. Ensure the type of fencing selected does
not interfere with any radiated signal of the facility. Alternative fence
configurations are discussed in MIL-HDBK-1013/1. The following requirements
are the minimum for normal protection:
a) Unless otherwise specified, locate the perimeter security fence
at least 30 feet from enclosed structures (except guard shelters). Provide a
clear zone not less than 20 feet wide immediately outside the fence. Keep
this area devoid of buildings, parking areas, poles, guy line anchors, shrubs,
trees, sign boards, and any other object that could conceal personnel. Grass
is permissible, provided it is kept mowed. Provide a similar clear zone at
least 30 feet wide immediately inside the fence. Ensure this area meets the
requirements of the exterior clear zone, except for the installation of
approved guard shelters and protective lighting poles.
b) Unless otherwise specified, provide barriers consisting of
sensored fencing with 3/4-inch vehicle restraining cable attached to the
fence.
c) Ensure chain-link fencing conforms to Federal Specification
RR-F-191, Wire Fencing (Chain-Link Fabric). Provide a fence with a total
height of 8 feet; 7-foot-high fence fabric plus top guard. Provide 9 gauge
fabric with openings not greater than 2 inches. Provide a 45-degree outrigger
maximum 18 inches long. Attach three evenly spaced strands of 12 gauge barbed
wire to the outriggers. Ground fence fabric and barbed wire strands.
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