[BLDG-SIM] thermal breaks for metal studs inside concrete walls

Jeff Haberl jeffhaberl at tees.tamus.edu
Tue Jul 10 13:11:24 PDT 2007


FYI. 

I believe you'll find several ORNL reports on thermal bridging, including simulations and measurements. There have also been a number of papers in the Thermal Envelopes proceedings, and ASHRAE proceedings. There has also been a lot of discussion about this at the 90.1 Envelope subcommittee. 

Jeff
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Jeff S. Haberl, Ph.D., P.E.............................jhaberl at esl.tamu.edu

Professor......................................................Office Ph: 979-845-6507

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----- Original Message -----
From: BLDG-SIM at gard.com <BLDG-SIM at gard.com>
To: BLDG-SIM at gard.com <BLDG-SIM at gard.com>
Sent: Mon Jul 09 19:42:19 2007
Subject: [BLDG-SIM] thermal breaks for metal studs inside concrete walls

Greetings BLDG-SIMmers,
 
Has anyone run across an explanation/quantification of how an effective thermal break might be provided for metal studs installed for furring on the inside of existing concrete walls? 
 
An architect's detail from outside to inside, shows an existing 8" concrete walls abutted against a 3-5/8" metal studs with furring installed 24" o/c with batt insulation, and gyp board for the finished side. The overall U-value is certainly a lot better than the bare concrete, but it would be improved if the metal studs weren't in direct contact with the concrete. 
 
Any thoughts on how to quantify this arrangements?
 
...Tom
 
Thomas J. White, P.E.
Associate
Lead Engineer, Energy Services
LEED(R) Accredited Professional
503.345.6246  |  twhite at glumac.com
 
Glumac
320 SW Washington, Suite 200
Portland, OR 97204-2640
T. 503.227.5280   F. 503.274.7674 
http://www.glumac.com
 


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