The latest version of ASHRAE 189.1 will expand duct testing requirements to include low pressure ducts as well as high pressure ducts.
The latest updates to ASHRAE 189.1 have been finalized and incorporated into the standard. They will be published after undergoing a final accuracy review before publication.
A key update to the standard is the broadening of duct leakage testing to include ducts operating at 3-inch WG (water gauge). Currently, the current requirement for leakage testing applies to ducts operation at ≥4-inch WG.
“The industry has resisted testing because of the additional cost involved,” said Bob Reid, former chairman of ASHRAE Technical Committee 5.2 and chief engineer at SPOT (Spiral Pipe of Texas). “But in reality, building owners can either make a relatively small payment upfront to ensure their ducts are operating properly, or they can continue to pay higher operating costs throughout the life of the building.”
There are new duct sealing methods that provide a demolition-free way to meet the tightened duct-sealing specifications. For instance, an aerosol-based duct-sealing technology seals leaks from inside the ductwork.
Related Stories
Codes and Standards | May 14, 2019
Database records more than 1,360 K-12 school shooting incidents since 1970
Naval Postgraduate School program maps locations nationwide.
Codes and Standards | May 13, 2019
In many cities, downtown housing comes with a hefty premium
Urban core living costs hundreds of thousands more in largest U.S. cities.
Codes and Standards | May 7, 2019
San Francisco plan would require largest commercial buildings to use 100% renewable electricity
First in the U.S. mandate would be phased in from 2022 to 2030.
Codes and Standards | May 7, 2019
ABC says best practices can improve construction companies’ safety by 680%
Daily ‘toolbox safety talks’ were most effective safety measures.
Codes and Standards | May 7, 2019
Office noise significantly reducing employee concentration, productivity, and creativity
Workplace distractions cause some to choose to work remotely.
Codes and Standards | May 7, 2019
WSP USA says it will be carbon neutral in 2019
Engineering firm will offset carbon at all offices and with employee business travel.
Codes and Standards | Apr 25, 2019
Report: Contractors invest $1.6 billion in workforce development annually
ABC members increased training spending 45% from 2013, according to a new report.
Codes and Standards | Apr 25, 2019
New York City’s Green New Deal would ban all-glass skyscrapers
The ambitious plan would also boost affordable housing, reduce building emissions, and update codes to account for sea level rise.
Codes and Standards | Apr 25, 2019
Chicago, Houston, and Dallas deemed ‘most dangerous cities for migratory birds’
The three cities are in the heart of North America’s most trafficked aerial corridors.
Codes and Standards | Apr 19, 2019
Notre Dame fire highlights danger of renovating historic structures
The devastating fire at Notre-Dame de Paris is the latest blaze to damage or destroy historic buildings while undergoing renovations. It highlights how vulnerable such structures are to fire while undergoing repairs.
