huangyhg

warehouse floor loading
that seems quite high to me. in the us, codes typically require 125 psf (6 kn/m^2) for light storage and 250 psf (12 kn/m^2) for heavy storage. now these are minimum code requirements and typically, you should ascertain what types of material is to be stored in the warehouse.
in a recent project, we were designing a covered overhead crane with a storage area beneath for structural steel shapes. the actual calculated load came out to be about 800 psf (38 kn/m^2) which was used. this was also on a very poor site with soil densities below approaching that of water. we used a reinforced mat slab but this was not technically within a warehouse building where slab settlements would be more of a concern.
check on the basis of bs6399:table 1 and what the 50 kn/m^2 is intended for. perhaps the client could be consulted as to verifying the actual loading vs. some arbitrary code amount. it seems over-kill to design for 50 when you might be storing foam products or toilet paper.
jae,
just a note: paper products such as toilet paper have very high storage densities. try lifting a box of copier paper, then re
imagineer,
you're right, i guess that real soft stuff my wife has been buying kinda skewed my thoughts.
suqlainuk (visitor)20 dec 00 8:57
jae,
thanks for your viewpoint. these high udl loadings are common in uk building specs, and stems from property developers wanting the flexibilibty for future use of the building as a high bay racking warehouse. actual racking leg loads are rarely given at the outset.
design for the high udl on sites with say peat (reinforced water) layers have given piles@3m centres with enlarged heads, 300mm thk slabs with 85kg/m^3 mesh reinforcement quantity. the alternative to this slab is 250 thk fibremesh reinforced slab with 60kg/m^3 of steel fibres....solution which end up being too expensive.
imagineer,
your reply reminds me....which is heavier, a ton of feathers or a ton of steel?

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