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Thread: Basement plumbing layout

  1. #46
    Not a Master Plumber novicepiper's Avatar
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    Quote Originally Posted by krow View Post
    It all depends on the location of your kitchen sink p-trap. If the p-trap is located at the end of that pipe, then it needs to be vented above the flood level rim of the sink or above the top of the sink level. I only assumed that the kitchen sink drain extended further up from its current location (As in the pic). Its was hard for me to determine where the next floor starts.
    the p trap is at the end of that pipe it will be on a 1/4 inch slope per ft toward the main stack. I was going to vent it to the main stack above the flood level of said sink, say 6 inches or so above the top of the sink bowl.

    however i thought venting to the stack at that location would create issues from the 2nd floor toilet/closet via pos/neg pressure. i guess the thing im sort of not understanding is the placement of venting in the main stack (generally speaking).

    Would i be right in thinking that any pressure from above re discharge would now have no bearing on the kitchen sink if there are two holes (via pipes) regarding the waste hole and the vent because there is no vacuum to be pushed or sucked from the kitchen pipe? becuase there is like a release loop created by the two holes.

    hope that made sense!?
    Last edited by novicepiper; 05-04-2008 at 08:16 PM.

  2. #47
    Plumber krow's Avatar
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    Make sure that the sink vent is connected to the vent part of your assembly . anywhere above the top edge of your sink as a guide.



    You are correct
    Would i be right in thinking that any pressure from above re discharge would now have no bearing on the kitchen sink if there are two holes (via pipes) regarding the waste hole and the vent because there is no vacuum to be pushed or sucked from the kitchen pipe? becuase there is like a release loop created by the two holes.
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  3. #48
    Not a Master Plumber novicepiper's Avatar
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    Quote Originally Posted by krow View Post
    Make sure that the sink vent is connected to the vent part of your assembly . anywhere above the top edge of your sink as a guide.



    You are correct
    cool thanks for that Krow - when i sort the new pipes out i will see if the 2nd floor toilet flush stops making that thunderous noise mid cycle.

    man this forum is addictive - so much to be learned - id love to come and watch one of you guys work on this sort of system for the day. im sort of understanding things way better now!

  4. #49
    Master Plumber Redwood's Avatar
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    Novice Piper... Ya caught onto this pretty quick!

    I was actually in my truck between jobs on a "borrowed" Wi-Fi connection when I posted earlier...
    Unsecure networks are fairgame! Secure your Wi-Fi network or you may be loaning out your bandwidth!
    Last edited by Redwood; 05-05-2008 at 06:49 PM.

  5. #50
    Not a Master Plumber novicepiper's Avatar
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    Quote Originally Posted by Redwood View Post
    Novice Piper... Ya caught onto this pretty quick!

    I was actually in my truck between jobs on a "borrowed" Wi-Fi connection when I posted earlier...
    Unsecure networks are fairgame! Secure your Wi-Fi network or you may be loaning out your bandwidth!
    Thanks for the compliment

    you know you need a permit for borrowing people wi fi

  6. #51
    DIY Member Squ1rrel's Avatar
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    With most wireless system coming equipped standard with encryption protocols, that only don't get activated because people knowingly disable it, I can't see how it doesn't end out being a case of "Well, you asked for it..."

  7. #52
    Master Plumber Redwood's Avatar
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    Yea, my feelings exactly! Besides I've taken care of a few identifying settings on the laptop in my truck

  8. #53
    Not a Master Plumber novicepiper's Avatar
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    Default plumbing

    there has been a few holdups etc etc & a few changes to the layout...the plumbing is as exactly as it is in the image.

    BLUE PIPE = 4" (upstairs to roof)
    GREEN PIPE = 3" (toilet)
    YELLOW PIPE = 2" (waste from lav & (can i use 2" for tub based on pipe sizes for rest of plan - or should this be 1.5?))
    RED PIPE = 1.5" (venting this bathroom set only) joins to main stack in roof.

    3 questions really

    1) Is this correct so far - i had to flip the tub to the other end!

    2) we need a drain hole in laundry room (how would i join this in to the existing pipe configuration) - i know i use 2"! ...

    3) there is also a dehumidifier pipe thats runs that needs to be attched somewhere - i was thinking of running wyeconnection off the tub vent line about half way and running it up the wall vertically above the highest point - would this work (it would be behind the trap so no gas could escape and its above the highest flood point. so this is probably not going to work and its most certainly not prob code.
    I think this needs to be attached to the drain hole - but i dont know how to do that without cutting into the blue pipe and venting it through the yellow (but that's prob wrong too). i need some help... i used my torch to call batman, but he's not responded..

    thanks for any help

    novice piper
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    Last edited by novicepiper; 06-04-2008 at 09:10 AM. Reason: image notes

  9. #54
    Master Plumber Redwood's Avatar
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    Since our approval something has been changed. The tub has lost its wet vent.

  10. #55
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    Quote Originally Posted by Redwood View Post
    Since our approval something has been changed. The tub has lost its wet vent.
    the tub had to flip (as in 180).

    how do i get the venting back to the tub. MAN i thought that would work. and the floor drain situation - any help would be good, nay - FANTASTIC. im depressed now.


    ps the only thing i changed was the angle of the pipe to the tubs waste!?


    my foolish head thought that the only way to get the waste from the tub on the correct angle was to do it the way i did i dont think i could have done it the approved way and had the water run correctly through the wye......im so so disapointed with myself about this...
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    Last edited by novicepiper; 06-07-2008 at 09:28 AM. Reason: General Edit

  11. #56
    Not a Master Plumber novicepiper's Avatar
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    Default anybody out there -please help

    could someone have a look at this please - krow - redwood anybody - i appreciate any response i just need to get this floor down now - thanks in advance

    please look at image above this message for existing appoved section (included within image top right in box) and the way it is with flipped tub.

    i was thinking of connecting into the 4" with 4x4x2 WYE and running a seperate vent from said 2" (45 angle) that connects to the vent (above highest fixture) center of image with a 90 elbow. also was wondering if i could tie in the floor drain using a 2" WYE (tie into the tub waste line)- that prob makes no sense at all. - suggestions would be greatly appreciated

    thanks novicepiper
    Last edited by novicepiper; 06-07-2008 at 07:02 PM.

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