Venting question

[Joeriley2005]

What is the code rule for horizontal members of a dry vent? Attached is a picture of what I'm faced with to use an existing roof penetration. I'd rather not punch another hole in my new roof...

Thank you for your advice,

Joe

 

[Cacher_Chick]

What you have drawn is fine.

 

[Sponsor]

 

[Jimbo]

there are some technical limits, but you are not even close to any problem. make sure the horizontal section slopes back to the vertical stack.

 

[Winslow]

what size vent is this? That distance requires at least a 3" vent according to the UPC.

 

[Joeriley2005]

It is a 2" pipe.

I thought the UPC Table 7-5 allowed 120 FT of total length for a 2" vent? I was just confused about the note: "Not to exceed 1/3 of the total permitted length of any vent may be installed in a horizontal position". I wanted to make sure it wasn't 1/3 of my total run.

 

[Tom Sawyer]

winslow, that's 119 inches not feet. 2" is fine

 

[hj]

I would have installed it without asking.

 

[Winslow]

Oh I thought it was in feet, was wondering what kind of a building it was. LOL

 

[Joeriley2005]

Thank you to everyone with the positive input.

 

[Winslow]

The UPC says not more that 1/3 of the total allowable lenth (which is 40 ft). Some however interpret it to mean not 1/3 of the total lenth installed. Depends on interpretation of code officials in your area.