Mixed Use energy calculations!

Karen Joslin

Sustainability Lead

PAE Consulting Engineers

LEEDuser Basic Member

5 thumbs up

September 17, 2018

Still confused about how to treat/account for the first floor for the retail/commercial spaces with 4 stories of apartments above. LEED v4 Homes-Midrise being applied, but do we do separate calculations based in ASHRAE 90.1 simulations and ASHRAE 62.1 ventilation using the NC thresholds, etc?

Post a reply

Carissa Sawyer

Certification Team Lead

Green Business Certification Inc. (GBCI)

LEEDuser Premium Member

11 thumbs up

Wed, 01/16/2019 - 22:46

Karen, For LEED v4 Multifamily Midrise, the ASHRAE 90.1 simulations must be done on the entire building, including all in-unit and non-unit spaces (including retail/commercial spaces). For ventilation, ASHRAE 62.1 calculations must be done for all non-unit spaces (including corridors, stairwells, retail/commercial spaces, etc.) using the NC ventilation calculator and ASHRAE 62.2 calculations must be done for in-unit spaces. Carissa

Charles Nepps

NH Green Consulting

LEEDuser Premium Member

80 thumbs up

Wed, 03/30/2022 - 10:40

In a case where the retail spaces will be fitted out, including HVAC, by the buyer/lessee of the space, do these spaces still need to be included in the ASHRAE 62.1 calculations ?