ASHRAE Urges Standard 62.1 Inclusion in International Mechanical Code

05/18/2006


Use of ASHRAE’s new ventilation rate procedure in the International Mechanical Code (IMC) would reduce first costs and energy costs, argue ASHRAE officials, who have proposed that the ventilation rate calculation procedures from ANSI/ASHRAE Standard 62.1-2004, Ventilation for Acceptable Indoor Air Quality, be adopted into the IMC, which is published by the International Code Council. The code establishes minimum regulations for mechanical systems using prescriptive and performance-related provisions.

The current ventilation criteria in the IMC are based on ASHRAE Standard 62-1989. But research and information on indoor air quality and ventilation have evolved rapidly. In response, ASHRAE has enhanced its standard to include the new rate procedure. This code change would make the IMC consistent with the standard and the 2006 Uniform Mechanical Code.

The procedure requires designers to account for pollutant sources other than occupants and to account for the efficiency of ventilation systems to deliver outdoor air to the breathing zone, according to Steve Taylor, an ASHRAE member who oversaw development of the proposal.

“Ventilation systems designed using the new procedure will result in somewhat lower outdoor rates for most occupancies compared to the current code, reducing first costs and energy costs,” he said.

The proposed changes are scheduled to be evaluated in September 2006 for possible inclusion in the 2007 IMC Supplement.

In related news, ASHRAE has proposed that portions of ANSI/ASHRAE Standard 90.2-2004, Energy-Efficient Design of Low-Rise Residential Buildings, be adopted in the International Energy Conservation Code published by the ICC.

The proposal addresses two key areas where Standard 90.2 provides greater energy efficiency than the current IECC provisions, according to Chris Mathis, vice chair of ASHRAE’s Code Development Committee who oversaw the proposals. These two areas are: fenestration solar heat gain coefficients (SHGC) in southern climates and the use of modeling assumptions to quantify the benefits of exterior shading; both are applied to code compliance using the performance path.





Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
2017 MEP Giants; Mergers and acquisitions report; ASHRAE 62.1; LEED v4 updates and tips; Understanding overcurrent protection
Integrating electrical and HVAC for energy efficiency; Mixed-use buildings; ASHRAE 90.4; Wireless fire alarms assessment and challenges
Integrated building networks, NFPA 99, recover waste heat, chilled water systems, Internet of Things, BAS controls
Transformers; Electrical system design; Selecting and sizing transformers; Grounded and ungrounded system design, Paralleling generator systems
Commissioning electrical systems; Designing emergency and standby generator systems; VFDs in high-performance buildings
Tying a microgrid to the smart grid; Paralleling generator systems; Previewing NEC 2017 changes
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me