The newly revised ANSI/ASHRAE Standard 105-2014, Standard Methods of Determining, Expressing, and Comparing Building Energy Performance and Greenhouse Gas Emissions, is intended to provide consistency in reporting the energy performance of existing or proposed buildings.
The standard answers such questions as: Should the measurements of a building’s area used in the equation to derive energy use per square foot be taken from the exterior dimensions or to the centerline of the wall? And, should storage spaces be included even though they are unoccupied?
“A standard method of measurement is needed to compare one building’s energy use to another,” says Keith Emerson chair of the Standard 105 committee. “For instance, comparing one building’s summer energy use to another building's winter use would be comparing apples and oranges.”
The standard provides a common basis for reporting building energy use in delivered energy forms and expressions of energy performance, and for comparing energy performance in terms of energy resources used and greenhouse gas emissions created—both across buildings and for energy efficiency measures within buildings. It also provides guidelines for comparing design options.
“To keep the standard flexible, a number of decisions are left to those who adopt it, including what should be calculated beyond site energy and the multipliers for those additional calculations,” Emerson said.
Related Stories
Codes and Standards | Aug 2, 2022
New tools help LEED projects reach health goals
The U.S. Green Building Council now offers tools to support the LEED Integrative Process for Health Promotion (IPHP) pilot credit.
Codes and Standards | Jul 29, 2022
Few projects and properties are being built beyond code
Clients and architects disagree on how well building to code provides resilience, according to a recent report by the American Institute of Architects (AIA) in partnership with Owens Corning.
Multifamily Housing | Jul 28, 2022
GM working to make EV charging accessible to multifamily residents
General Motors, envisioning a future where electric vehicles will be commonplace, is working to boost charging infrastructure for those who live in multifamily residences.
Codes and Standards | Jul 27, 2022
Biden administration proposes drastic flood insurance reform
The Biden administration’s proposed major overhaul to the National Flood Insurance Program, or NFIP, would drastically alter how Americans protect homes and businesses against flooding.
Codes and Standards | Jul 22, 2022
Office developers aim for zero carbon without offsets
As companies reassess their office needs in the wake of the pandemic, a new arms race to deliver net zero carbon space without the need for offsets is taking place in London, according to a recent Bloomberg report.
Codes and Standards | Jul 22, 2022
Hurricane-resistant construction may be greatly undervalued
New research led by an MIT graduate student at the school’s Concrete Sustainability Hub suggests that the value of buildings constructed to resist wind damage in hurricanes may be significantly underestimated.
Building Team | Jul 20, 2022
San Francisco overtakes Tokyo as the world’s most expensive city for construction
San Francisco has overtaken Tokyo as the world’s most expensive city for construction, according to a new report from Turner & Townsend.
Airports | Jul 18, 2022
FAA will award nearly $1 billion for airport projects
The Federal Aviation Administration (FAA) will award nearly $1 billion to 85 airports of all sizes across the country to improve terminals.
Building Team | Jul 13, 2022
The YIMBY movement emerges as valuable advocate for affordable housing
Over the past few decades, developers grew accustomed to nothing but staunch opposition to dense affordable housing project proposals.
Codes and Standards | Jul 12, 2022
USGBC sets out principles for LEED’s future
The U.S. Green Building Council recently published a report containing principles outlining how LEED will evolve.