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Thread: 4 inch riser clamp

  1. #1
    DIY Senior Member rockycmt's Avatar
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    Default 4 inch riser clamp

    I am cutting out some cast in my basement. I want to reinforce the riser to the first floor. I went to ********* and the riser clamp they have needs to go above the subfloor. I want to support from the bottom. Do they make a riser clamp that screws into the floor above.

    thanks In adv,

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Default clamp

    You put the clamp around the pipe, then use bolts in the space between the arms on either side.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    You want the anchors to be in shear rather than in tension. On the building where I work, they just let the arms of the clamp sit on the concrete floor around the hole.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  4. #4
    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    Can you support from above and recess in to the floor?


    You could find some type of angle bracket to attach to the riser clamp that can then be attached to the floor.

  5. #5
    General Contractor Carpenter toolaholic's Avatar
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    Question It's just like You

    Would You like Your whole body weight supported by Your feet, or do You prefer to hang by Your ears? I'M BACK!

  6. #6
    I&C Engineer (mostly WWTP) Lakee911's Avatar
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    Quote Originally Posted by toolaholic View Post
    Would You like Your whole body weight supported by Your feet, or do You prefer to hang by Your ears? I'M BACK!
    FWIW, when I was little my sister used to come up behind my and squeeze her hands around my head over my ears and pick me up.

  7. #7
    General Contractor Carpenter toolaholic's Avatar
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    Default

    She needs a spanking ! No, I'm Married

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