Section 2: Individual LEED Credit Reviews
LEED Credit EQ-6.1:
controls is determined based on the size of
the space (details are in the LEED 2.1
Controllability of Systems
Reference Guide); however the minimum
number is three. The LEED program allows
Perimeter Spaces
occupancy sensors, daylighting controls,
dimming controls, and "manual on/automatic
off" switches to be counted as two lighting
Intent
controls each.
Provide a high level of thermal, ventilation and
Basis for Cost Assumption
lighting system control by individual occupants
or specific groups in multi-occupants spaces (i.e.
For security reasons, GSA Courthouses do not, as
classrooms or conference areas) to promote the
a rule, have operable windows. The credit is
productivity, comfort and well-being of building
therefore not pursued in the Courthouse model.
occupants.
In the Office Building model, cost premiums are
Requirement
defined to provide operable windows in both the
minimal faade renovation and full faade
Provide at least an average of one operable
renovation scenarios (the reference cases assume
window and one lighting control zone per 200
all fixed windows). In the minimal faade
square feet for all regularly occupied areas within
renovation, approximately 12 percent of the
15 feet of the perimeter wall.
fenestration area is changed to operable windows.
(1 point)
This represents an approach in which operable
awning units are integrated into the larger window
and curtainwall systems along the faade. In the
Cost Impact = 4 or 5
full faade renovation, which uses a similar
approach, approximately 15 percent of the
fenestration area is changed to operable windows
1
2
3
4
5
(the percentage of operable window area is larger
because the overall area of fenestration in the full
GSA
No
Low
Moderate
High
faade scenario is smaller).
Standard
premium,
premium
premium
premium
(no cost)
psble svgs
(<50K)
(50-150K)
(>150K)
The Office Buildings are assumed to have task
lighting and/or individual light switches at each
Practical Applications
workstation or office along the perimeter. Because
this is considered a GSA standard, no cost
Achieving this credit will typically involve:
premium is associated with this feature. Similarly
conference rooms or other multi-occupant spaces
Operable windows throughout all of the
along the perimeter are assumed to have at least
regularly occupied spaces along the building
two lighting controls, with one being either an
perimeter.
occupancy sensor or daylight dimming control
Individual lighting controls for each occupant
(based on the features included for credit EA-1,
with an office, workstation, or desk within 15
Optimize Energy Performance).
feet of the perimeter. Acceptable lighting
controls include standard light switches for
overhead fixtures (typical for private offices),
hard-wired task lighting (for workstations or
desks), or remote controlled overhead lighting
(controlled via computer terminal or remote
control device).
Multiple lighting controls for multi-occupant
spaces (e.g., conference rooms, classrooms)
along the perimeter. The number of required
GSA LEED COST STUDY
146