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 | Mar 13, 2017
U.S. House and Senate have voted to repeal Dept. of Labor’s 'blacklisting' rule
The rule mandates labor compliance review for federal construction contractors.
Codes and Standards | Mar 9, 2017
WiredScore forms Connectivity Advisory Committee
The committee's creation is an important step forward for the group that evaluates internet connectivity in buildings.
Codes and Standards | Mar 8, 2017
New guide examines multifamily high-performance ventilation
The focus is on cost and performance of various systems.
Codes and Standards | Mar 7, 2017
Canada’s national building codes will encompass effects of climate change
Forecasted data, not historical data, will be used as the basis for the codes.
Codes and Standards | Mar 6, 2017
ConsensusDocs updates standard short contract editions
The updates address industry changes impacting insurance, legal, technology, and terminology.
Codes and Standards | Mar 3, 2017
ASCE updates standard for structures using tensile membrane
The new sstandard combines guidelines for conventional tensile membrane structures with frame-covered membrane structures.
Codes and Standards | Mar 1, 2017
EPA's 2017 Construction General Permit now in effect
The regulation governs compliance with effluent limits.
Codes and Standards | Feb 28, 2017
Concern grows for high tide flood vulnerability in Mid-Atlantic states
Washington, D.C., and Annapolis, Md., could flood every three days by 2045.
Codes and Standards | Feb 27, 2017
Green building saves operating costs and boosts asset value
A new report shows 14% cost savings and a 7% increase in value when green standards are met.
Codes and Standards | Feb 24, 2017
Scant data hampering energy, water efficiency at sports venues
New NIBS report says baseline information needs further development.
