855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 118
Extracted Content
- Section 10 . Other Equipment
For ASHRAE 90.1-2022, Section 11 Additional Efficiency Requirements (applicable to initial buildouts and substantial alterations), the intent behind this method is to provide a straightforward, easy-to-follow path to compliance. This method is particularly useful for smaller projects or those with less complex designs, where flexibility is less of a concern.
The prescriptive method is primarily a checklist approach. It specifies minimum requirements for various building components, such as insulation levels, window performance, lighting power densities, HVAC system efficiencies, and system controls. [33]
Some sections provide an option for limited trade-offs within the section. For example, spaces matching the ASHRAE 90.1 definition of computer room, such as data centers or server rooms, may comply with ASHRAE 90.4 (i.e., 90.1, Section 6.6.1 Computer Room System Path and 90.1 Section 8.6.1 Computer Room Systems). The other trade-off methods do not typically apply to Interiors scope of work (i.e., 90.1, Section 5.6 Building Envelope Trade-off Compliance Path and 90.1-2022, Section 6.6.2 Mechanical System Performance Path).
Additional considerations EAc2: Enhanced Energy Efficiency, Option 1. Prescriptive Path
ASHRAE 90.1-2019 . Projects that comply with Option 1 of the prerequisite using the ASHRAE 90.1-2019 prescriptive method may earn points for additional improvements to regulated systems. (Refer to Path 2. Regulated Loads).
ASHRAE 90.1-2022 . Projects that comply with Option 2 of the prerequisite using the ASHRAE 90.1-2022 prescriptive method are awarded three points under Path 1. ASHRAE 90.1-2022 compliance for project scope.
Further points are available for additional improvements to regulated systems (Refer to Path 2. Regulated Loads).
Prescriptive method: Option 2. ASHRAE 90.1-2022, Section 11 Additional Efficiency Requirements ASHRAE 90.1-2022, Section 11 Additional Efficiency Requirements is applicable to initial buildout construction and substantial alterations.
33 “Performance-Based Compliance, Building Energy Codes Program”, U.S. Department of Energy, accessed March 31, 2025, https://www.energycodes.gov/performance_based_compliance.
U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 107