Impact Forces
Impact Forces
(OP)
For impact produced by some loading on a concrete floor, how far should you take it? Obviously you should include it for the slab design. How about the beam supporting the slab? How about the girder supporting the beam? I would think that you need not carry the impact into the column since the increment of impact would be very small compared to the total load it would normally carry.






RE: Impact Forces
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RE: Impact Forces
RE: Impact Forces
This may be conservative, but AASHTO design requirements are typically more conservative than AISC.
I have no building design experience, but I would suspect it would be reasonable to take the impact up to, but not in to the columns (i.e. into all members framing your floor system). Seems like this would be a pretty common question in building design. I’m surprised no one else has chimed in here.
RE: Impact Forces
I believe impact for buildings is related to live load and the associated minimum loadings for various uses incorporates the effect of vibrations from these live loads.
I have not encountered impact for buildings similar to impact for bridges. Anti-terrorism may change that all.
VOD