Has anyone reinforced their floors?

Discussion in 'Middle Tennessee Reef Club' started by NeveSSL, Aug 14, 2013.

  1. NeveSSL

    NeveSSL Valuable Member MTRCMember Build Thread Contributor

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    For those of you with large tanks, did you reinforce your floors? If so, how did you do it?

    Where I'm planning on putting my 150 is perpendicular to several floor joists and back against a load bearing wall, but it still makes me nervous and I may reinforce a bit, anyway.

    What all have you guys done?

    Brandon
     

  2. Mike J.

    Mike J. Valuable Member R2R Excellence Award

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    Yes, I have reinforced many floors; I'm a general contractor. But, IMO putting a 150 where you stated you should not have a problem. Advice that should be heeded is not to put a tank parallel to the floor joists and is only being supported by one (maybe two) joists.
     
    Last edited: Aug 14, 2013
  3. gmoney243

    gmoney243 Valuable Member

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    My 180 is ran.parallel for almost 2 years with no bracing or bowing. Subfloor should help distribute weight. I also have laminate floors so im sure that helps.distribute weight also.
     
  4. totion

    totion Well-Known Member

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    I helped a friend reinforce floors in a 150 year old home for a 180 running parallel. We used 4 basement floor jacks and twisted them up. The floors sagged without the tank so we raised them level, then filled the tank, and made a few more minor adjustments to make sure the tank was level. We had to raise the one side by almost half an inch
     
  5. NeveSSL

    NeveSSL Valuable Member MTRCMember Build Thread Contributor

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    Awesome. Thanks for all of the replies, guys. I'm also thinking it will probably be fine since it will be across 3 or 4 joists right where they meet the support wall, but it does make me a little nervous. Its also on hardwood floors, but they're prefinished. That's a different thread, though. :) I'm putting the sump in the garage, so water changes and most maintenance will be done out there. I'm hoping to keep spills to an absolute minimum (who isn't?) and being quick to wipe up the ones that do occur.

    I may have a structural engineer come out and verify, though, just to be absolute sure. The last thing I want to do is screw up my house. Mainly because A) its expensive, but B) it doesn't make for a happy wife. lol

    Brandon
     
  6. poolkeeper1

    poolkeeper1 Valuable Member

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    Brandon Me thinks your over thinking this, After more tanks than i can remember (Some on the second floor) I have never had any problems.
    Glad to see u getting a tank again
    Bill
     
  7. NeveSSL

    NeveSSL Valuable Member MTRCMember Build Thread Contributor

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    I think you're right, Bill. The more I think about it, the more comfortable I am placing my tank there. It really meets most of the recommendations I've seen, anyway. Multiple floor joists where they meet their support. :)

    Brandon
     
  8. SmyrnaReefer

    SmyrnaReefer Valuable Member MTRCMember

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    i put 4x4s and a couple of pavers under mine for $10. its a comfort thing. dont think i need it, but i did it anyways
     
  9. pickupman66

    pickupman66 Valuable Member MTRCMember Reef Tank 365 Build Thread Contributor

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    my 180 was setup parallel with the floor joists but backed up against a load bearing wall. they were also shorter joists and only ran about 12-14 feet to the nearest support column. I still re-inforced my floor. I made 3 pillars from cinder blocks and then shimmed them up. one of them looks crooked in this photo, but I straightened it up.

    [​IMG]
     
  10. dwilliams87

    dwilliams87 Valuable Member

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    I live in a house that is over 100 years old. I bought a 75 gallon over a year ago and was worried about the same thing. What I did was ran a garden hose in the house and filled the tank with water. I checked it with a level before I filled it and after I filled it and made sure there was no movement. There was none, it was perpendicular to 3 floor joists and on a load bearing wall. Unfortunately the landlord said no to a tank that big, so it was sold before I even put saltwater in it. So, now I have a 40 in the bed room with a 29g sump. He won't go in there. lol
     
  11. kateater

    kateater Active Member

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    My 215 runs parallel with the floor joist. I framed up two frames to support 4 joist with 2x4. I had the PE at my work certify the floor load.
     
  12. Volitans67

    Volitans67 Active Member MTRCMember

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    I'm sistering 5 joists for my 240. For me it was worth the peace of mind, but the structural engineer said a 180 would be fine without it, especially up against a load bearing wall.
     
  13. Dowtish

    Dowtish Valuable Member R2R Excellence Award MTRCMember

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    Just put some pillows in the crawl space, if it falls through it will have a soft landing....Peace of mind is huge for me.
     
  14. Mike J.

    Mike J. Valuable Member R2R Excellence Award

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    Unless your jacks or columns are set on a footer or dug down below the frost line they are not a permanent fix. One way to greater increase the strength of your joist and to prevent sagging and to spread the weight evenly over the entire floor is by installing blocking. Make sure the blocks are all pushed up so they are tight and touching the floor sheeting. I have used this method many times to fix sagging floors. Here's a picture: [​IMG]
     
  15. ToXIc

    ToXIc Valuable Member R2R Supporter MTRCMember

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    I ran 2ea 2x6 parallel across the joists and at each intersection i put 2ea 6" screws into each tying them together. Then supported the 2x6's with 4x4's on blocks which was hammered into place under the 2x6.
    before i did this my 34g RSM130D rocked to and fro when the kids stormed trough the room. After bracing my 120g stands firm. i may have to re-evaluate before putting the 185g in the same spot.


    [​IMG]
     
    Last edited: Aug 15, 2013
  16. poolkeeper1

    poolkeeper1 Valuable Member

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    Laying them on their sides like that gives you no benefit of support as all the strength is gained when they are upright...
     
  17. ToXIc

    ToXIc Valuable Member R2R Supporter MTRCMember

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    i did it like that to stop the joist from flexing cause traffic moves along the joist instead of across.. the tank sits on the two 4x4 in the foreground.... but i see your point.
     
  18. Tennsquire

    Tennsquire Well-Known Member MTRCMember

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    I put a couple of jack posts on piers in the crawlspace under my 75 gallon to stop the floor from bouncing. The floor wouldn't move much, but it would move a little bit whenever anyone walked by the tank. I didn't want the tank to flex as it can weaken it over time. It's been solid for the last 10 years. The house we're moving to at the end of the month has a basement (aka "fishroom"), so I may end up bracing what will be a significantly bigger tank....
     
  19. NeveSSL

    NeveSSL Valuable Member MTRCMember Build Thread Contributor

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    Thanks for all of the replies, everyone! I think I feel comfortable with up to a 180g there, and maybe more, but it will probably be a while before I get a tank any larger than that. :)

    Chris, I'm thinking mattresses may work a bit better than pillows, but great thought, nonetheless. :D

    Brandon
     
  20. meintn

    meintn Active Member MTRCMember

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    I'm on a slab so peace of mind comes easy :) Now just to get a bigger tank...
     
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