[quote=“jchick, post:11, topic:83676”]
Ok great! I didn’t think they would…
My favorite example is dryer ducts. Metal, plastic, PVC, flexible, rigid with or without screws. The latest code does not appear to address the dryer ducting in a crawlspace (or I cant find it) issue. I checked with my dryer instructions and it does not address the exhaust duct in the crawlspace neither does the instructions for a new exhaust vent. You mention the plastic duct in the crawlspace on an inspection and a contractor calls you up and says it is ok according to code, what do you say? What is the basis of your reply?
I am not certain what code cycle you guys have adopted in Tenn. In Florida we are on the 2009 version of the IRC which is the Florida 2010 Building code.
From IRC. 2009 Chapter 15
Dryer exhaust ducts shall have a smooth interior finish and shall be constructed of metal a minimum 0.016 inch thick. The exhaust duct size shall be 4 inches nominal in diameter.
Ducts shall not be joined with screws or other similar fasteners that protrude into the inside of the duct
Ducts shall be supported at 4 foot intervals and secured in place.
There is quite a bit more in the code section, but I think that covers what you were looking for