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 | Jan 19, 2021
Thomas Jefferson University launches the Institute for Smart and Healthy Cities
Will address climate change, social equity, rapid urbanization, and health.
Codes and Standards | Jan 14, 2021
Petition urges FEMA to update flood maps, set tougher standards for floodplain construction
Environmental and planning groups note soaring claims, flood insurance debt.
Codes and Standards | Jan 13, 2021
Proposed change to IECC process irks efficiency advocates
New procedure would diminish influence of local code officials.
Codes and Standards | Jan 12, 2021
Two net-zero hotel projects could portend a new hospitality trend
Energy-intensive sector comprises 10% of all commercial real estate.
Codes and Standards | Jan 11, 2021
Zero Energy Buildings growth driven by government policy, stringent codes, technologies
Restraints include high upfront cost, and lack of universal definition and approaches.
Codes and Standards | Jan 11, 2021
HUD releases new Fair Housing Act design and construction requirements
First update of ‘safe harbors’ in 15 years provides better clarity for design and construction firms.
Codes and Standards | Jan 8, 2021
Court ruling gives UpCodes upper hand in fight over building codes database
Battle over IP property claims by ICC and other codes bodies continues.
Codes and Standards | Jan 8, 2021
Houston creates tax incentives for green stormwater elements
Businesses that install green roofs, rain gardens, permeable pavement, and rainwater harvesting are eligible.
Codes and Standards | Jan 7, 2021
Trump’s classical design aesthetic mandate for federal buildings likely to be felt for years
May limit the number of firms that could compete for contracts.
Codes and Standards | Jan 7, 2021
Workers on some of Virginia’s major construction projects sue subcontractors for wage theft
Projects include new General Assembly Building, outpatient facility at Virginia Commonwealth University.