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Re: Fork Truck on elevated slab

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Rich,
 
Hard wheeled fork lifts will destroy any concrete on metal deck slab that is designed as having static loads. I have done the forensic engineering on a building in Houston that was designed that way. The floor design was adequate for a static load from the forklift, but the forklift destroyed the concrete causing it to be replaced.
 
H. H. Robertson had a deck manual that gave design examples designing a slab to carry forklift traffic. The problem they described is "rolling shear" which first causes the concrete to debond from the metal deck and, without adequate reinforcement, the slab to crack. From what I remember, the concrete fill needed to be thicker than the normal floor slab requirements and reinforced with real reinforcing bars not WWM.


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