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ASCE/SFPE 29-99 Sect 5.3.2 - Concrete Filled HSS Fire Resistance

ASCE/SFPE 29-99 Sect 5.3.2 - Concrete Filled HSS Fire Resistance

ASCE/SFPE 29-99 Sect 5.3.2 - Concrete Filled HSS Fire Resistance

(OP)
Does anyone have this document and care to share section 5.3.2, the formula/method for determining the fire resistance of concrete filled HSS?

I have a situation where the architect would like to use HSS8x2 columns to support a small roof slab (very light loads). It does not appear possible to get the reqd. 180 minute rating on these members with intumescent paint, I'm wondering what filling with grout will get - and if not much then what size we need to go to before we're there.

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