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Concrete slab considerations for installing overhead crane 2

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Faller500i

Structural
Dec 9, 2022
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CA
Hi,

I have a free standing 5 ton overhead crane I want to put in my shop. The crane is a single girder bridge crane that measures 32'6" from column center to column center. My shop is about 40' x 40' which is built on a perimeter footing and stem wall with currently a dirt floor(slab not poured yet). The height of the ceiling is 20'. I have all the columns, bracing and runway beams for the crane. The columns are 8x8 wide flange beam but have no base plates for some reason so I will have to get some proper base plates with appropriate holes made up and weld them to the columns. The runway beams I will have to shorten as they are 50' each.
I want to pour an appropriate slab in the shop to be able to anchor bolt the crane columns to the floor. I was planning on having at least an 8" thick slab but of course have it thicker around the perimeter where the columns will get bolted to.
My questions are:
How thick should I make the slab on the perimeter to be able to anchor bolt the crane columns to? What size anchor bolts should I be using?
How far from the edge of the slab can I be drilling into the concrete for the crane column anchor bolts?

Any advice would be appreciated!

Thank you
 
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Do you have an engineer who has designed the structure? If so, get them involved.

If you are going at this alone, and are not a structural engineer, please retain one. This is a crane that puts the life safety of everyone in close proximity to the shop at immediate risk. This is not a simple punching bag from the ceiling in a wood residential structure.

If you are structural engineer I would still retain outside eyes given A) the liability spread being good for the soul and B) the nature of your questions.
 
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