Quote:
Originally Posted by ardecila
That would be the reason, then. I’ve never seen fireproofing like that, only the spray-applied kind or intumescent paint...
I guess since there’s no steel decking, it just made sense to soffit all the beams instead to get the desired fire rating.
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You've never seen steel protected by block or clay? Or are you just saying you've never seen it protected by gypsum block?
They have been fireproofing steel with block since literally the day they started using steel here. Here's a picture of one of the columns in Louis Sullivan's 1882 Jewelers Building. Notice the cast structural steel exposed from within a circular layer of clay coated with plaster.
