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Thread: Is this a correct install? Pic of Shower and Toilet Drain installed by local plumber.

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    DIY Junior Member brianslink's Avatar
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    Question Is this a correct install? Pic of Shower and Toilet Drain installed by local plumber.

    I hired a local plumber to install the drain and waste vent for my new construction home. This is a picture of a drain area I am concerned with. The shower drain (double shower) on the left starts the run and it continues to a toilet drain on the right which continues on to the main line. No vent. I am afraid when the toilet is flushed it will suck air from the shower trap and gurgle. Am I wrong?
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    Last edited by Terry; 10-24-2012 at 09:10 AM.

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    Forum Admin, Expert Plumber Terry's Avatar
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    Yes. You are right. The shower is not vented. Have the hacks come back out and install a vent on the shower trap arm before it enters the 3" fitting.

    Is there a plumbing permit for this? And if so, does the inspector look in the crawlspace?

    Here is a nice link to Bert Polk's plumbing tips
    Last edited by Terry; 10-25-2012 at 07:01 PM.

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    DIY Junior Member brianslink's Avatar
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    Thanks for your reply. Yes, I purchased a building permit through my city which includes elect, plumbing, hvac, etc. I do not think the inspector goes in the crawl space though. Here are a couple of pics of another bath at the other end of the house. The crawl space pic is actually two pictures joined together. I also included a photo of the same area topside.

    The drain run starts at the tub/shower and continues to the toilet and then continues to a double vanity. The only vent I see is at the double vanity. Will this work?




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    Forum Admin, Expert Plumber Terry's Avatar
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    No. That will not work.

    No vent on the shower.
    The vent for the tub/shower needs to come off at the same height as the trap arm. If it's below the trap arm, or after it has turned down towards the ground, it is no longer vented.
    Have them cut in a 2" x 1.5" combo between the p-trap and the 45 and extend the vent up into the wall above.

    Seriously, you've got to be kidding me!

    Here is a nice link to Bert Polk's plumbing tips
    Last edited by Terry; 10-25-2012 at 07:01 PM.

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    In the Trades Tom Sawyer's Avatar
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    Does the "local plumber" have a license? I'm betting NOT
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

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    DIY Member boardable's Avatar
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    Ok someone correct me if I am wrong. No line can be any more than 5 feet from a vent. AKA if you want to use a single vent stack the rest of the lines can not be more than 5 feet away. You can share one toilet, two sinks, and two bath's or showers on one two inch vent. This is max. The vent in the wall can not be at any more than a 45 degree angle. In your photo it is at a 90 degree angle. Once again I was taught this is a no no. You have no access issues by looking at your crawl space so there is no reason not to do this correctly. Tell them to get back down there and do it right.

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    Moderator & Master Plumber hj's Avatar
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    They must have thought they were putting plumbing in a mobile home, because that is what it looks like. In most jurisdictions, the vent out through the roof has to have an aggregate area, not diameter, equal to the incoming sewer. One 2" vent does not cut it. I hope he gave you a "good price" because he did a "quick and dirty" installation.
    Last edited by hj; 10-24-2012 at 05:49 PM.
    Licensed residential and commercial plumber

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    DIY Junior Member brianslink's Avatar
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    Thank you for the replies so far. The plumber who performed the drain and waste vent work is licensed and has a prominent business in my town. His bid was not low. I am having a hard time swallowing all this. The pics I included show only about 25% of the plumbing he did... I am really worried about the other 75% you guys have not seen. I went under the house with a level and did some checking. I found several "uphill" runs. I'm going to meet with my city inspector tomorrow and we are going to walk through the house and I will reply tomorrow with the results.

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    Moderator & Master Plumber hj's Avatar
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    quote; The plumber who performed the drain and waste vent work is licensed and has a prominent business in my town

    Just goes to show you that not all plumbers are created equal. There is one "prominent" one in this town who stated, "I don't need repeat business, I only need to get into every house in town one time".
    Licensed residential and commercial plumber

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    DIY Member boardable's Avatar
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    UPHILL RUN !!!!! Are you Effin kidding me. Maybe in his world water runs up not down. 1/8 inch slope minimum and 1/4 prefered by me.

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    DIY Senior Member wjcandee's Avatar
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    Very interested to hear what the inspector has to say.

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    DIY Member boardable's Avatar
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    Also do I see that instead of cutting out the 2x4 and running the double sink drains straight down through the floor where the wall meets they just went in front of the wall? That will only work if your tile guy doesn't mind tiling around them and you don't mind cutting part of the back of your new vanity out and any future installed cabinet also. This is the biggest mickey mouse install I have ever seen

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    DIY Junior Member brianslink's Avatar
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    Quote Originally Posted by boardable View Post
    Also do I see that instead of cutting out the 2x4 and running the double sink drains straight down through the floor where the wall meets they just went in front of the wall? That will only work if your tile guy doesn't mind tiling around them and you don't mind cutting part of the back of your new vanity out and any future installed cabinet also. This is the biggest mickey mouse install I have ever seen
    There is a double beam directly under the wall so they could not send the drain down without coming outside the wall. The cabinet maker won't have any problem at all, I already talked to him about this.

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    DIY Junior Member brianslink's Avatar
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    The inspector came out today and he is fairly new at inspections and unsure of the code for venting. He is going to review his code book and get back to me.

    I think I may provide a few add'l photos to show you guys more of the drain and waste vent job. If it comes down to it I may have to use your comments and advice to instruct the plumber on how to do the job right.

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    DIY Senior Member wjcandee's Avatar
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    [QUOTE=brianslink;359416]The inspector came out today and he is fairly new at inspections and unsure of the code for venting. He is going to review his code book and get back to me.[QUOTE]

    Let me just point out that I have a copy of some county's "Plumbing for DIY'ers" 5-page PDF, and five minutes looking at that alone could tell you that this was a hack job.

    In my jurisdiction, the plumbing inspector is an old-timer who is incredibly-knowledgeable and an incredible hardass. This actually makes me very happy, as it does anyone who takes pride in doing the job right. Sorry they sent you some kid.

    Did he need to look at his code book to know that drain pipes -- particularly in brand-spankin'-new construction -- should slope down?

    Here is a nice link to Bert Polk's plumbing tips
    Last edited by Terry; 10-25-2012 at 07:01 PM.

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