The 2016 version of ANSI/ASHRAE/IES Standard 90.1, the Energy Standard for Buildings Except Low-Rise Residential Buildings, was recently released.
The update includes a new compliance path and significant technical changes affecting building envelope, and mechanical and lighting systems. The document contains 121 new addenda since publication of the previous version: the 2013 standard.
The 2016 edition contains a new compliance path, the Performance Rating Method, which is included in Appendix G. The provision was previously used only to rate “beyond code” performance of buildings; it now serves as an alternative to the traditional performance path.
Among the most significant technical changes are:
Envelope:
• Mandatory requirements for envelope verification, supporting reduced air infiltration, and increased requirements for air leakage to overhead coiling doors.
• More stringent prescriptive requirements for metal building roofs and walls, fenestration, and opaque doors.
• Improved clarity of exterior walls definitions, building orientation, and clarity around the effective R-value of air spaces.
• New requirements based on the addition of climate zone 0.
Lighting:
• Modified control requirements to simplify advanced lighting control applications.
• New exterior and interior lighting power densities based on LED technology.
• Requirements for dwelling units to set limits on light source efficacy.
• Additional controls for lighting in parking areas.
Mechanical:
• Chilled water plant metering, requiring large electric driven chilled water plants to be monitored for electric energy use and efficiency.
• DOAS requirements, adding efficiency and rating requirements for dedicated outside air systems.
• Elevator efficiency, introducing requirements for identifying usage category and efficiency class.
• Economizer fault detection and diagnostics, implementing monitoring system requirements for air-cooled DX cooling units with economizers, helping to ensure that equipment is working properly.
• New requirements for replacement equipment, such as adding economizers or fan speed control, which previously only applied to new installations.
More information on code adoption and related technical assistance is available at energycodes.gov.
Related Stories
Contractors | Dec 12, 2023
The average U.S. contractor has 8.5 months worth of construction work in the pipeline, as of November 2023
Associated Builders and Contractors reported today that its Construction Backlog Indicator inched up to 8.5 months in November from 8.4 months in October, according to an ABC member survey conducted Nov. 20 to Dec. 4. The reading is down 0.7 months from November 2022.
Giants 400 | Dec 11, 2023
Top 80 Local Government Building Construction Firms for 2023
Turner Construction, Clark Group, Holder Construction, and Pepper Construction top BD+C's ranking of the nation's largest local government building general contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Dec 11, 2023
Top 50 State Government Building Construction Firms for 2023
Hensel Phelps, Turner Construction, Clark Group, and PCL Construction top BD+C's ranking of the nation's largest state government building general contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Codes and Standards | Dec 11, 2023
Washington state tries new approach to phase out fossil fuels in new construction
After pausing a heat pump mandate earlier this year after a federal court overturned Berkeley, Calif.’s ban on gas appliances in new buildings, Washington state enacted a new code provision that seems poised to achieve the same goal.
Green | Dec 11, 2023
U.S. has tools to meet commercial building sector decarbonization goals early
The U.S. has the tools to reduce commercial building-related emissions to reach target goals in 2029, earlier than what it committed to when it signed the Paris Agreement, according to a report by the U.S. Green Building Council.
MFPRO+ News | Dec 11, 2023
U.S. poorly prepared to house growing number of older adults
The U.S. is ill-prepared to provide adequate housing for the growing ranks of older people, according to a report from Harvard University’s Joint Center for Housing Studies. Over the next decade, the U.S. population older than 75 will increase by 45%, growing from 17 million to nearly 25 million, with many expected to struggle financially.
Office Buildings | Dec 11, 2023
Believe it or not, there could be a shortage of office space in the years ahead
With work-from-home firmly established, many real estate analysts predict a dramatic reduction in office space leasing and plummeting property values. But the high-end of the office segment might actually be headed for a shortage, according to real estate intelligence company CoStar Group.
University Buildings | Dec 8, 2023
Yale University breaks ground on nation's largest Living Building student housing complex
A groundbreaking on Oct. 11 kicked off a project aiming to construct the largest Living Building Challenge-certified residence on a university campus. The Living Village, a 45,000 sf home for Yale University Divinity School graduate students, “will make an ecological statement about the need to build in harmony with the natural world while training students to become ‘apostles of the environment’,” according to Bruner/Cott, which is leading the design team that includes Höweler + Yoon Architecture and Andropogon Associates.
Giants 400 | Dec 5, 2023
Top 50 Federal Government Building Construction Firms for 2023
Fluor, BL Harbert, Hensel Phelps, and Turner Construction top BD+C's ranking of the nation's largest federal government building general contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Dec 5, 2023
Top 70 Federal Government Building Architecture Firms for 2023
Page Southerland Page, HOK, Gensler, LEO A DALY, and Stantec top BD+C's ranking of the nation's largest federal government building architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
