UFC 4-022-01
25 May 2005
rendition index (CRI). To ensure appropriate color rendition, use a light source with CRI
greater than or equal to 65 in the ID check areas, and use any nominally white light
source (CRI greater than or equal to 50) at the illuminances typically encountered in the
remaining areas of an ECF.
When closed circuit television (CCTV) is used as part of the security operations, it is
important to coordinate the lighting and CCTV system (TM 5-811-1.) TM 5-811-1 and
the IESNA G-1-03 provide further information on designing lighting systems for use with
CCTV.
Table 6-4 Minimum Exterior Illuminances
Application
Minimum
Notes
Illuminance,
footcandles (lx) at
Ground Level*
Illuminance on the pavement and
3 (30) Secondary Gates
Approach Zone and
sidewalks
Response Zone
3 (30) Primary Gates
Average to minimum levels shall not
Search Area Parking
AF
exceed 4:1
4 (40) Primary Gates
and Roadways
Average to minimum levels shall not
5 (50) in general area
exceed 3:1
Access Control Zone
10 (100) or twice the
In immediate area where
immediate surrounding
Search Areas
identification and inspection occur.
areas, whichever is
Also vert. Illuminance = 25% of
greater at ID checking
horizontal illuminance should be
areas
provided at the level of the vehicle
driver.
20 (200) in ID
AF
AF
This level of lighting is only
checking areas under
required for the Air Force
the canopy, and 30
(300) is required at the
point of contact using
additional task lighting
*Ground level is defined as 6 in (150 mm) above ground level
6-14.4 Restrike or Restart Capability
Another important consideration in the design of the site lighting, is the restart or restrike
time for the selected lamps. Restart occurs when a lamp experiences a loss of power
and there is a time delay before backup power restores power to the lamp and the
subsequent restrike or restart of the lamp. Coordinate the restart capability with the
user. As an example, high intensity discharge (HID) lamps are more energy conserving
6-36
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