Originally Posted By: gbell
This post was automatically imported from our archived forum.
Good Morning
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Greg Bell
Bell Inspection Service
Good Morning
Originally Posted By: gbell
This post was automatically imported from our archived forum.
Single-wall ducts serving range hoods shall be constructed of Galvanized steel, stainless steel or copper.
Exception: Ducts for domestic kitchen cooking appliances equipped with down draft exhaust systems shall be permitted to be constructed of schedule 40 PVC pipe provided that the installation complies with all of the following:
1. The duct shall be installed under a concrete slab poured on grade.
2. The underfloor trench in which the duct is installed shall be completely backfilled with sand or gravel.
3. The PVC duct shall extend not greater than 1 inch (25.4 mm) above the indoor concrete floor surface.
4. The PVC duct shall extend not greater than 1 inch (25.4 mm) above grade outside of the building.
5. The PVC shall not be solvent cemented.
The correct answer is A
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Greg Bell
Bell Inspection Service
Originally Posted By: jmyers
This post was automatically imported from our archived forum.
Greg,
Can you clarify why the pvc can only extend 1 inch on both ends?
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Joe Myers
A & N Inspections, Inc.
http://anii.biz
Originally Posted By: kmcmahon
This post was automatically imported from our archived forum.
I must have reread the question 5 times before I understood what it was referring to. I have never seen a downdraft hood on a stove.
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Wisconsin Home Inspection, ABC Home Inspection LLC
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Originally Posted By: gbell
This post was automatically imported from our archived forum.
I will have to research that Joe. I will get back to it when I have an answer.
Kevin
I see them when there is a Jenn Aire cooktop or there is a cooktop on an island in the kitchen.
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Greg Bell
Bell Inspection Service