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  1. #1
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415
    So I'm layin in bed last night, wondering... the sewer lines in a tall building (say 10 stories or more), do they just dump straight down into the sewage pit/sewer system, or do they have traps to slow the poo down?

    My other half thought I was nuts when I was laying there, half awake, laughing thinking of the increadible speed of the pooh flying down a little pipe.

    So what's the vertic you plumbing guru's?

  2. #2
    Join Date
    Jul 2001
    Location
    Southern NJ
    Posts
    1,241
    Tallest building I ever was responsible for was 11 stories.

    There was a booster pump and pressure tank on the 5th floor to get water up to the top and there were S-shaped traps every few floors to slow down the descent. There were also a couple of big tanks at various levels where the stuff coming down would fall into the top of the tank and then start moving again out a drain pipe on the side. These tanks had vent pipes that went out the wall to fresh air. I guess to stop the syphon effect of 50 gallons of waste moving at 80 mph.
    Ryan
    Maintenance Guy
    -----------------
    naysayer, skeptic, conspiracy theorist

  3. #3
    Join Date
    Nov 2004
    Posts
    125
    Potable water is pumped to the top floors storage where it flows by gravity. Sanitary is "staged" downward a few floors at a time (not sure the exact number).

  4. #4
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415
    Thanks fella's! I knew there had to be some magic to this. But it still is entertaining thinking of the speeds it'd hit the bottom with no traps!

  5. #5
    Join Date
    Dec 2003
    Location
    Middle of Florida
    Posts
    2,159
    I have been is some high rises were the Chiller water had a ton of pressure on it.
    On a 20 or 40 story building the main line going from the air cooled rooftop to the chiller in the mechanical room basement, can be real scarry doing a wet Tap.
    If common sense is so common how come so few of us have it!

  6. #6
    Join Date
    Jul 2004
    Location
    Victoria,Tx
    Posts
    6,680
    At the plant we use control valves set at a certain amount of pressure, set to release easy, to slow the velosity of poop and stuff. The pumps in the sump will handle the out flow.

  7. #7
    Join Date
    Dec 2001
    Location
    Chicago, N/W burbs
    Posts
    8,004
    Originally posted by amickracing
    My other half thought I was nuts when I was laying there, half awake, laughing thinking of the increadible speed of the pooh flying down a little pipe.
    You just made coffee come out my nose, now I gotta clean my keyboard.
    R2B4BTU

  8. #8
    Join Date
    May 2003
    Location
    Dixie
    Posts
    1,344
    yea like what was said about the syphon effect.....imagine the guy sitting on the top toilet....suck his a** down the drain

  9. #9
    Join Date
    Dec 2003
    Location
    Middle of Florida
    Posts
    2,159
    Originally posted by oroy54
    At the plant we use control valves set at a certain amount of pressure, set to release easy, to slow the velosity of poop and stuff. The pumps in the sump will handle the out flow.

    I was in a Orange juice plant in Dade city Florida, they were using steam for reheat. I had to purchase valves for the pneumatic controls they were using, it went from 600PSI to 30 PSI, cost was 400 bucks a poop er....I mean pop.
    If common sense is so common how come so few of us have it!

  10. #10
    Join Date
    Oct 2001
    Posts
    6,966
    you figure it would be like a highway with entrance ramps as the floors dump out during a normal day into the risers they would slow each other down...no alternate murging allowed.
    "when in doubt...jump it out" http://www.youtube.com/watch?v=U1qEZHhJubY

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