UFC 3 -520-01
June 10, 2002
F-15.1.3.4 Expect indirect lighting systems to require about 1.0 watts per square foot or
0.1 square meter, and to require supplementary task lighting. Direct/indirect systems
might require 1.0 to 1.2 watts per square foot or 0.1 square meter but will minimize or
eliminate the need for separate task lighting.
F-15.1.4 Special Considerations for Computer Intensive Workspaces. Most
lensed troffers, wraparounds and some parabolic lighting systems are not suited for
computer workspaces. Cons ider whether a "computer -friendly" parabolic lighting
system, indirect lighting system, or one of several high performance luminaires
optimized for computer workspace is best. "Computer -friendly" parabolics and
specialized direct/indirect visual display terminal (VDT) luminaires are distinctive in that
they have specular (mirror-like) louvers. VDT luminaires are more expensive and less
efficient, so choose them only for work areas with intensive computer work.
F-15.1.5 Controls . Motion sensors should be used for all private offices, conference
rooms, and other spaces with irregular use or occupancy. Open office areas, lobbies,
atria, and other common spaces should employ time scheduling controls with manual
overrides. Consider individual workstation dimming controls for open office areas
employing parabolics. In locations with high utility rates, consider daylighting controls
and other more advanced lighting controls to realize additional demand savings,
especially at peak load periods.
F-15.2
Classrooms.
F-15.2.1 Refer to IESNA/ANSI RP -3, Guide for Educational Facilities Lighting for
specific guidance.
F-15.2.2 For schools, an approach similar to offices should be followed. If the
classrooms do not utilize computers, direct/indirect lighting systems (50 percent up/50
percent down) and mostly direct lighting systems (15 percent up/85 percent down) are
perhaps better choices than high performance systems. Industrial styled lighting
systems are often chosen for schools due to their durability, excelle nt efficiency, and
reasonable cost.
F-15.3
Warehouses and Light Industrial Facilities .
F-15.3.1 Refer to IESNA DG-2, Design Guide for Warehouse Lighting, and IESNA/ANSI
RP-7, Industrial Lighting Facilities.
F-15.3.2 Wherever possible, warehouse and light industrial buildings should be
designed to utilize daylight for general illumination. Basic skylights will be acceptable in
most cases, although more advanced daylighting methods such as clerestories should
be considered when feasible. A supplemental e lectric lighting system using controls to
realize energy savings should also be provided.
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