installing new vent stack

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  #1  
Old 05-12-09, 11:31 AM
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installing new vent stack

i'm adding a toilet and sink to unfinished basement. both will be roughly 15' from main soil stack. i plan on installing a vent pipe just for the new fixtures, but due to layout, it would be easier to run the new vent stack up through the garage and out the garage roof. however, the garage roof is lower than the main roof of the house. my two questions:

1. can i install toilet 15' from main soil stack.
2. can new vent stack be at lower height than the main roof.

thanks ahead of time for your help.

marc.
 
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Old 05-12-09, 11:47 AM
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1. why couldnt you install the toilet 15' away? you can install it as far away as you want as long as it has 1/4" per foot of pitch and is properly vented

2. you can run the new vent to what ever roof or part of a roof you want as long as it is with in the guidlines of the code which is things like: not within 10' of an air intake or window that has the ability to be opened.

refer to your local code for a complete list
 
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Old 05-12-09, 12:24 PM
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i just wasn't sure if there was some strange code about how far away the toilet could be.

i figure i'll run the new vent to the far end of the garage which is well away from the house. that should be ok.
 
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Old 05-12-09, 04:00 PM
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yep, sounds good but the vent needs to be pitched back towards the drain at the same slope as a drain needs to be pitched so running it to far might be a problem unless you have a tall garage roof
 
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