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  1. #1
    Registered User Glenn's Avatar
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    I-beam Load and Span charts?

    I am looking for an I-beam span chart that will show me how large of an I-beam I would need for a 39 ft span. (I know that is a HUGE span.)

    I want to build a 2ton bridge crane in one bay of my garage and I would love to not have any support columns on the rail (a 39 foot run.) The bridge will be 28-29 foot wide.

    The only span charts I have found stop at around 25 ft.

    Now I realize that this is a critical situation and I WILL have the final design checked by a licensed engineer. I don't want this thing to kill me.
    Glenn H. Shelton III
    My Garage Pics

  2. #2
    Contributing Member MXtras's Avatar
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    Re: I-beam Load and Span charts?

    Would this help?

    http://www.engineeringtoolbox.com/be...es-d_1311.html

    I recall seeing a beam sizing chart from a crane company years ago. A quick search turned up nothing, but I will keep my eyes peeled.

    Scott
    If it wasn't for the last minute I wouldn't get anything done

  3. #3
    Registered User Glenn's Avatar
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    Re: I-beam Load and Span charts?

    The calculator did not help with my question, but it helped with some others I had. Nice, nice, nice. It will come in handy.

    Thanks Scott!
    Glenn H. Shelton III
    My Garage Pics

  4. #4
    Registered User Glenn's Avatar
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    Re: I-beam Load and Span charts?

    I found this: http://www.geocities.com/richgetze/

    It is called BeamBoy and it will allow you to calculate the deflection and such. Now I just need to figure out how to use it and what is an acceptable amount of deflection.
    Glenn H. Shelton III
    My Garage Pics

  5. #5

    Re: I-beam Load and Span charts?

    That is a huge crane! I looked threw some of your shop building pictures and that is one nice shop.

  6. #6
    Registered User Glenn's Avatar
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    Re: I-beam Load and Span charts?

    Thank you Ponch for the compliments. It will be so much nicer when everything is finished and I can actually use it. I still do not even have permanent power in there.

    The crane "idea" came from Old Car Guy's garage over on garagejournal.com. I originally wanted it to be across bays 1 and 2 (the two bays with the 16X12 doors.) But I would lose too much overhead height due to having to clear the building I-beam.

    I have determined that an S10X25.4 beam at 39' long for the runway with a support column 1' in from each end and one in the middle (19.5') will have a deflection of only 0.176" at the point half way between any 2 support columns with a load of 4000lbs. (This crane will only be "rated" for 4000lbs. At full capacity with the load all the way to one side of the bridge beam, there will actually only be 3780 lbs on the runway closest to the load. The other 222lbs is still carried by the other runway. But this allows for the weight of the bridge beam itself to fall into the calculation.)

    The bridge beam worked out to be a S12X35 at 19' long. The ends of this beam will ride upon the trucks with the mounting point roughly 6" in from each end. With a 4000lb load hanging dead center, the deflection of this beam will be 0.122". This decreases nicely once you move the load off center. Say for instance the same 4000lb load is hanging 4' out from either end, then the deflection decreases to 0.0691".

    Now for those who are wondering what in the hell I need to pick up that is 4000lbs, nothing. I mean, not that I know of anyway. I figured that about 2000lbs would be the most I would ever lift so I doubled it for a security factor. I would rather spend a little more in materials now, then to have it fall on me.

    So at 2000lbs, the deflection of the bridge beam will only be 0.0611" and the runway would be 0.0881". This I feel is an acceptable amount of deflection. I will still have an engineer double check it all.

    I have not yet determined the Hook Height From Floor as I have not started looking at trolleys and hoists yet, but it should be around 12'.

    I am sure this is more information than most (if not all) of you care about, but I wanted to post my findings for others who are looking.

    That BeamBoy software helped 10000000%!
    Glenn H. Shelton III
    My Garage Pics

  7. #7
    Contributing Member MXtras's Avatar
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    Re: I-beam Load and Span charts?

    Excellent!

    Keep us up to speed, Glenn.

    Scott
    If it wasn't for the last minute I wouldn't get anything done

  8. #8
    Registered User Glenn's Avatar
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    Re: I-beam Load and Span charts?

    Well, with the rate my projects go, it will be a couple of years. LOL! (I still don't have lights in my garage.)
    Glenn H. Shelton III
    My Garage Pics

  9. #9
    Contributing Member MXtras's Avatar
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    Re: I-beam Load and Span charts?

    Dude - you have GOT to get your priorities straight!!

    ....don't make me come down there......

    Scott
    If it wasn't for the last minute I wouldn't get anything done

  10. #10
    Registered User Glenn's Avatar
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    Re: I-beam Load and Span charts?

    Quote Originally Posted by MXtras View Post
    Dude - you have GOT to get your priorities straight!!

    ....don't make me come down there......

    Scott
    Well, if you do come down here, I can put you to work. LOL!
    Glenn H. Shelton III
    My Garage Pics

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