ASHRAE recently released an updated edition of ANSI/ASHRAE/IES Standard 90.2-2018 Energy-Efficient Design of Low-Rise Residential Buildings.
The 2018 revision of Standard 90.2 outlines cost-effective residential building energy performance measures that are at least 50% more efficient than those defined by the 2006 International Energy Construction Code (IECC), according to an ASHRAE news release. “Standard 90.2 provides a mechanism by which any residential building design can be easily evaluated against performance objectives,” said Theresa Weston, Ph.D., chair of the Standard 90.2 committee. “This update to the standard offers better alignment between this standard’s requirements and marketplace product availability as well as some revisions to improve the document’s clarity and internal consistency.”
The updated version provides:
· Clarification for modeling software requirements
· Guidance on the use of international climate data presented in ASHRAE Standard 169
· A new normative appendix on proper installation techniques for critical thermal resistance building components
· Improved prescriptive envelope performance data tables
· New performance specifications for ground-source heat pumps
· Minimum lighting efficiency provisions for single-family, large single-family, and multifamily homes
· Guidance on pool heater pilot lights, pump motor efficiency, and exterior de-icing systems
· Clarifications to multi-zonal building air-leakage testing procedures
Related Stories
| Dec 22, 2011
Federal home weatherization program has impacted 6.8 million homes
More than 6.8 million homes have been weatherized using federal, state, utility, and other funds under the American Recovery and Reinvestment Act.
| Dec 22, 2011
Group developing BIM data standards
A collaboration among Georgia Tech’s Digital Building Lab, the Precast Concrete Institute, the American Concrete Institute, and the American Institute of Steel Construction aims to develop global standards for transportation of three-dimensional digital models among fabricator, architecture, engineering, and construction groups.
| Dec 22, 2011
New green code spells out thermal requirement for roof retrofits
The 2012 International Green Construction Code (IgCC) includes a straightforward approach to minimum thermal requirements for roof and wall systems.
| Dec 22, 2011
AGC’s safety conference Jan. 11-13 in San Antonio
The Associated General Contractors of America’s national meeting for safety and health professionals will take place Jan. 11-13, 2012 in San Antonio, TX.
| Dec 22, 2011
Proposed New York City zoning revamp encourages rooftop solar and wind energy
New zoning regulation proposals to make it easier for building owners in New York City to make their structures more sustainable have entered the public approval process.
| Dec 15, 2011
Dayton, Ohio schools saving $2.6 million annually by building to LEED
On average, green schools save about $100,000 a year on operating costs, including energy and water savings.
| Dec 15, 2011
Building to LEED standards can pose new risks for construction workers
Workers on these projects suffer a 24% increase in falls to lower levels during roof work, which researchers attributed to the installation of solar panels, and a few other risks.
| Dec 15, 2011
NRDC charges Maine governor with weakening green wood requirement
The FSC program is administered through the Leadership in Energy and Environmental Design (LEED) and requires wood to be harvested in a sustainable way.
| Dec 15, 2011
Post-tornado, Tuscaloosa seeks to create walkable urban, retail areas
Block sizes initially were limited to a maximum perimeter of 1,750 feet, with no side of the block being longer than 500 feet.
| Dec 15, 2011
Allentown, Pa. city council asked to repeal union-friendly law
The mayor of Allentown, Pa. asked the City Council to repeal a year-old ordinance that forces contractors to hire union workers for large city projects funded with state and federal dollars.
