Waste Pipe Above Ground

[Kevin Klein]

Wondering if it is allowed to route a 3" waste pipe from one structure, through a breezeway roof structure, into the house and down a wall to the 4" main drain. I have attached a .pdf that shows the routing contemplated. Breezeway "attic" (for lack of a better word) would be fully enclosed but accessible. I would probably include heat trace for the cold months.

If this is not allowed, what is the minimum cover needed for a in ground 3" waste pipe" Thanks for any help.

 

[hj]

Minimum cover is 1" unless even that is not possible. Heat t ape is not required unless you plan to have a leaking faucet and not fix it until Spring.

 

[Sponsor]

 

[Kevin Klein]

Minimum cover is 1" unless even that is not possible. Heat t ape is not required unless you plan to have a leaking faucet and not fix it until Spring.

Confused by your answer.
Is the routing through the breezeway structure ok as shown?
I assume the 1" cover you cite is for running the waste line on/underground? Thanks.

 

[Terry]

I have always thought that Idaho wanted five feet of cover for their pipes. It's pretty darn cold there.
I haven't connected two structures above ground before. That might be one for an inspector.

 

[Kevin Klein]

Wow. Answers all over the board. I'm surprised the UPC doesn't have any section that addresses the underground situation. At least that I can find. Both answers seem extreme to me. 1" would present a freeze and/or risk of damage. 5' would present its own set of challenges; surely a drain pipe coming out of a crawl space 2' deep (required in Boise) doesn't need to be 5' below finish grade?

The run between structures is probably pretty unique. My thought process was that it should pass muster. It is not unlike running a drain pipe in a joist space; the only difference being that the 6' connecting breezeway "roof/attic" is unconditioned.

Thanks for the inputs all.

 

[Reach4]

http://pds.cityofboise.org/media/1951/2015_currentcodes.pdf says Frost Depth = 24 inches minimum for code purposes. I am not implying that this number would apply to your situation, but it would seem to say 5 ft is not relevant.