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
| Dec 13, 2011
Improved code requirements for attic ventilation
The Roof Assembly Ventilation Coalition (RAVC) participated in the development of the code.
| Dec 12, 2011
LEED-EB Outpaces LEED for New Construction
The U.S. Green Building Council’s (USGBC’s) LEED certifications for existing buildings standard is outpacing LEED for new buildings for the first time.
| Dec 12, 2011
Philadelphia Mayor Signs Order for Project Labor Agreements
Philadelphia Mayor Michael Nutter signed an executive order establishing project labor agreements for major public works projects in Philadelphia.
| Dec 12, 2011
Improved Code Requirements for Attic Ventilation
The International Code Council (ICC) recently published the 2012 International Residential Code (IRC) that includes improved code requirements for balanced intake and exhaust for ventilated attics.
| Dec 12, 2011
DOE makes 2010 ASHRAE energy standard the reference for state energy codes
The U.S. Department of Energy (DOE) issued a ruling that establishes the 2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers’ (ASHRAE’s) 2010 energy efficiency standard as the commercial building reference standard for state building energy codes.
| Dec 1, 2011
Chinese cabinet approves regulation to prevent fraud in construction bidding
China’s State Council approved a regulation to standardize bidding processes for construction and other business-related projects in order to prevent fraud and misconduct.
| Dec 1, 2011
More stringent efficiency codes driving growth in green building industry
Thanks partly to upgraded building codes, the building energy efficiency market will soar more than 50% between now and 2017 to $103.5 billion, according to Pike Research.
| Dec 1, 2011
Safety tracking tool helping prevent injuries at World Trade Center site
Since putting in place their Safety Management Systems Tracking Tool three years ago, risk managers for the World Trade Center project in New York say they've seen workplace injuries, reported hazards, and workers compensation claims decline.
| Dec 1, 2011
OSHA releases new construction safety videos
OSHA released new safety videos to offer both employers and workers brief, easy-to-understand education about construction safety.
| Dec 1, 2011
GSA Region 5 BIM standards could set national agenda in government contracting
Learning how the GSA wants to work with contractors using Building Information Models (BIM) will dramatically improve your odds of winning federal work.