ASHRAE has released updated editions of its standards for ventilation system design and acceptable indoor air quality (IAQ).
ANSI/ASHRAE Standard 62.1-2019, Ventilation for Acceptable Indoor Air Quality, specifies minimum ventilation rates and other measures for new and existing buildings to foster IAQ that is acceptable to human occupants and that minimizes adverse health effects.
Significant changes include:
· New tables of ventilation rates per unit area for checking new and existing building ventilation calculations
· Simplified version of the Ventilation Rate Procedure
· Modified Natural Ventilation Procedure calculation methodology
· Revised scope to specifically identify occupancies previously not covered
· New requirement that natural ventilation consider the quality of the outdoor air and interaction of the outdoor air with mechanically cooled spaces
· Humidity control requirements now expressed as dew point instead of relative humidity
The 2019 edition of Standard 62.2 adds a compliance path that gives credit for particle filtration, distinguishing between balanced and unbalanced ventilation system interactions with natural infiltration. The standard also requires compartmentalization limits for new multifamily dwellings, and allows for single-point envelope leakage test results to be used when calculating infiltration credit.
Related Stories
Building Team | May 17, 2022
MKA’s Embodied Carbon Action Plan will include reporting on carbon reductions for selected projects
Magnusson Klemencic Associates (MKA) recently released its SE 2050 Embodied Carbon Action Plan (ECAP) for 2022.
Codes and Standards | May 16, 2022
AIA releases Justice in the Built Environment guide
The American Institute of Architects (AIA) recently published a new supplementary edition of the Guides for Equitable Practice, titled “Justice in the Built Environment.”
Codes and Standards | May 12, 2022
Solar industry creates non-profit to remove barriers to clean energy deployment
The Solar Energy Industries Association (SEIA) is launching a 501(c)3 non-profit organization to accelerate the transition to carbon-free electricity.
Green Specifications | May 12, 2022
MG2’s Sustainable Materials Evaluation System
Learn how MG2’s Sustainable Materials Evaluation System helps clients, prospects, and staff choose the most environmentally feasible materials for their building projects. Candon Murphy, LEED GA, Assoc. IIDA, Design Lab Manager and Materials & Sustainability Specialist with MG2, speaks with BD+C Executive Editor Rob Cassidy.
Esports Arenas | May 11, 2022
Design firm Populous partners with esports company on digital art NFT collection
Design firm Populous and multidiscipline esports organization Kansas City Pioneers have partnered on a five-part NFT collection.
Market Data | May 10, 2022
Hybrid work could result in 20% less demand for office space
Global office demand could drop by between 10% and 20% as companies continue to develop policies around hybrid work arrangements, a Barclays analyst recently stated on CNBC.
Standards | May 9, 2022
New GSA standards set carbon limits on building materials for all major projects
New General Services Administration standards place limitations on high carbon-emitting building materials for all major projects under the GSA umbrella.
Higher Education | May 5, 2022
To keep pace with demand, higher ed will have to add 45,000 beds by year-end
The higher education residential sector will have to add 45,000 beds by the end of 2022 to keep pace with demand, according to a report by Humphreys & Partners Architects.
Legislation | May 4, 2022
Washington is first state to mandate all-electric heat for new large buildings
Washington recently became the first state to require all electric heat for new buildings.
Sponsored | Healthcare Facilities | May 3, 2022
Planning for hospital campus access that works for people
This course defines the elements of hospital campus access that are essential to promoting the efficient, stress-free movement of patients, staff, family, and visitors. Campus access elements include signage and wayfinding, parking facilities, transportation demand management, shuttle buses, curb access, valet parking management, roadways, and pedestrian walkways.
