AboutFred Weldin Expertise All aspects of International Mechanical Code and International Fuel Gas Code. I'm taking a break from All Experts; you can reach me through the "Contact Us" link at askweldin.com.
Experience I now troubleshoot existing H&AC installations and design H&AC systems and oversee their installations. I have 23 years experience as a H&AC contractor, and I've worked with the tools as a plumber-pipefitter.
Organizations ASHRAE, ICC, NSPE.
Education/Credentials B of ME, numerous factory schools (York, Honeywell, etc.) and Code seminars.
Awards and Honors Certified as a Mechanical Code Construction Inspector. Currently certified as an expert here, under H&AC....
Expert: Fred Weldin Date: 7/17/2008 Subject: Mechanical issues...
Question Dear Mr. Weldin,
I'm buying a new home in Houston, TX. Before sheetrock was installed, I saw some air ducts in the ceiling were constricted by many electrical wires running and contacting across them. Please see evident photos in this link for more details www.dzidzom.com/construction_issues/air%20duct%20issues
I'd like to ask for your advice about this issue. Do these installation of electrical wire and air duct violate building code? Please advise!
I look forward to hearing from your earliest response.
Best regards,
Duke Pham
Answer Duke:
Which came first, the duct or the wiring?
I don't know of any Code requirement that would prohibit the installation. The workmanship does violate the intent of the Industry Standard for Installation of Flexible Duct: Air Diffusion Council's "Flexible Duct Performance & Installation Standards"; they intend to maintain the round shape of the ducts, without restricting the internal diameter.
See askweldin.com for info on flex installation.
JPEG's 3 & 4 indicate a good deal of "compression", check that at the website. I always say the only things that should touch the flex are its connections and supports.
