Table 11-1. Security Lighting Requirements.
Outer lighted edge & 30 ft.
Outer lighted edge
Outer lighted edge
Sensitive inner area Area
Out from structure
Entry pavement and sidewalk
Horizontal plane at ground level (6 inches above grade) unless otherwise noted. Footcandles are shown in parentheses.
Vertical plane, 3 feet above grade.
Use the higher value for the more sensitive or confined areas.
Initial field measurements will be multiplied by light loss factors to determine the maintenance levels.
US Army Corps of Engineers
priate security agency. Lighting installed and fo-
the entry guard and facing persons or vehicles
cused to illuminate the interior of a restricted area
approaching the area. If the area is equipped with
a boundary lighting system, the entry point light
assists security forces in surveillance and may
deter aggressors. The system will be designed so
pattern will extend outward from the boundary or
gate of the area. The entry (guardhouse) in such
that detection of an aggressor within the restricted
instances, will be inside the area in comparative
area is assured. Shadows, except those cast by
aggressors, will be avoided. Sensitive areas or
structures may include pier and dock areas, park-
11-5. lighting Guidelines.
ing areas, vital buildings, storage areas, and vul-
a. Area and boundary descriptions.
nerable areas of the communication, power, and
(1) The boundary is considered to be the pe-
water distribution systems.
(1) Luminaires. Lighting units can range from
rimeter fence. If there is no fence, the property
line is the boundary.
ordinary floodlights to more elaborate pole-
mounted fixtures capable of illuminating compar-
(2) An isolated fenced boundary consists of
atively large sectors of adjacent terrain, such as
fence lines around a large isolated facility where
the area outside the fence is clear of obstructions
those used for stadium lighting. Lighting units
for 100 feet or more, and the fence is at least 100
may also include pivotable, individual spotlights
feet away from any inner buildings or operating
or searchlights. Where night operations which
require work area lighting are conducted, the area
lighting will be configured to facilitate the detec-
(3) A semi-isolated fenced boundary consists of
tion of unauthorized approach. Special purpose
fence lines where the area outside the fence is
lighting may be necessary for some applications.
clear for only 60 to 100 feet.
(2) Towers. Security towers, whether continu-
(4) A non-isolated fenced boundary consists of
ously or intermittently occupied, will be provided
fence lines where the fence is adjacent to operating
with a movable luminaire or searchlight which is
areas within the installation or to public thorough-
controlled at the tower. High intensity illumina-
fares or other installations outside the boundary.
tion at long range is the essential characteristic of
The width of the lighted area depends on the clear
a movable lighting system.
c. Entry points. Lighting is installed at entry
(5) A sensitive inner area is a storage or open
workspace inside a lighted boundary where addi-
tive areas to facilitate accurate and rapid identifi-
tional security lighting is required, particularly for
aisles, passageways, and vantage points of adja-
cation of personnel requiring entry into the area
and complete inspection within and under vehi-
cles. Entry point lighting will be installed in any
(6) A sensitive inner structure is either within
20 feet of critical operations or houses critical
restricted area for which entry controls are re-
quired during normal operations. Fixtures will be
operations (such as structures or buildings for
placed so that light sources are above and behind