What if unprotected steel joists are substituted for the


What are the allowable height and ß oor area for a restaurant (Occupancy Group A-2) in a building of Mill construction (Type IV)? How do these Þ gures change if unprotected Ordinary construction (Type IIIB) is used instead? (Assume that sprinklers are not required.) What if unprotected steel joists are substituted for the wood joists? Or precast concrete plank ß oors with a 2-hour Þ re rating?

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Civil Engineering: What if unprotected steel joists are substituted for the
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