Quantcast LEED EQ Prerequisite 1: Minimum IAQ Performance

 
  
 
Section 2: Individual LEED Credit Reviews
LEED EQ Prerequisite 1:
Summary of First Cost Impacts
Minimum IAQ Performance
Courthouse (New Construction, 262,000 GSF)
No identified cost premiums.
Intent
Establish minimum indoor air quality (IAQ)
Office Building (Modernization, 306,600 GSF)
performance to prevent the development of
No identified cost premiums.
indoor air quality problems in buildings, thus
contributing to the comfort and well-being of
the occupants
Additional Considerations
Requirement
None identified.
Meet the minimum requirements of voluntary
consensus standard ASHRAE 62-1999,
Synergistic Credits
Ventilation for Acceptable Indoor Air Quality,
and approved Addenda (see ASHRAE 62-2001,
None identified (with construction cost impacts).
Appendix H, for a complete compilation of
Addenda) using the Ventilation Rate Procedure.
Cost Impact = 1
1
2
3
4
5
GSA
No
Low
Moderate
High
Standard
premium,
premium
premium
premium
(no cost)
psble svgs
(<50K)
(50-150K)
(>150K)
Practical Applications
The ASHRAE 62 Ventilation Rate Procedure
prescriptively defines the amount of outside air to
be supplied for a given occupancy type (e.g., 20
cfm of outside air per person in an office
environment). ASHRAE 62 is a common design
standard for HVAC engineers, and is also
referenced in many building codes.
Basis for Cost Assumption
Compliance with ASHRAE 62 (latest version) is a
stated requirement for GSA projects, per P100.
There is no cost impact associated with this
prerequisite.
GSA LEED COST STUDY
130


 


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