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Thread: Help with design of rack

  1. #1
    Associate Engineer
    Join Date
    Aug 2019
    Posts
    1

    Help with design of rack

    I need to build a rack 16 foot long by 7 foot wide with 7 shelves. I want to build it out of square metal tubing welded together On each shelf there will be a 3000 lb fixture that is as long and wide as the shelf so the weight is decided along the shelf. My question is how to determine the size of tubing and wall thickness.

    Thanks
    Samuel

  2. #2
    Principle Engineer
    Join Date
    May 2015
    Posts
    155
    Sounds dangerous but, first determine if the floor can handle the load. If you have two 1 foot wide, seven foot long supports at the base and 21,000 lbs supported by them that's 1500 lbs/sq.ft if you obtain perfect load distribution (which you won't). Once a structural engineer signs off on the building you might want to start looking at 'I' beams.

  3. #3
    Associate Engineer
    Join Date
    Aug 2019
    Posts
    2
    At 1500 lbs/sq.ft I hope this rack is sitting on top of a cement slab on top of the ground like his garage.

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