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Re: Mechanical Anchor at Fire Assembly

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Can you not turn the leg of the L up so the bolts are embedded in or above
the concrete?


Mike Brown wrote:

> I am designing a 2 hour floor assembly to span between existing concrete
> bearing walls.  The span is only 8 feet.  The floor is 3 inch steel deck
> with 3-1/4 inches of light weight concrete.  I was planning on supporting
> the steel deck with a steel angle anchored to the existing concrete.
> The problem is that the new ICBO report for expansion bolts (Hilti Kwik
> Bolt II) states that *anchors are limited to nonfire-resistive
> construction.*  As we all know, I can not use epoxy anchors because they
> melt at relatively low temperatures.  Is there any type of anchor that I
> can use?  Or do I have to provide independant supports for the floor
> structure and not tie into the existing concrete wall.
> I would appreciate anyone's opinion on this matter and reccommendations.
> Thank you
> Mike Brown, P.E.
> CSHQA Engineers
> Boise, ID