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Re: nds dowel bearing strength

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Is the concrete strength that relevent?  Shouldn't the wood strength nearly
always control?

Pat Clark, P.E.

----- Original Message -----
From: "da" <dadie(--nospam--at)sbcglobal.net>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, September 25, 2002 5:40 PM
Subject: nds dowel bearing strength


> this question is in regards to the 97 nds.  there is a bolt table for
single
> shear connections to concrete.  the footnote states that the table uses an
> Fem value of 6000 psi for concrete with f'c = 2000 psi.  the publication
> which derives the dowel bearing strengths states that the Fem value for
> concrete is 3 * f'c.
>
> my questions are:
>
> 1.  have any of you extrapolated this value for "typical" concrete
> strengths?
> ie - Fem = 12,000 psi for f'c = 4000 psi
>
> 2.  have any of you extrapolated this value for cmu?
> ie - Fem = 3 * f'm
> ie - Fem = 4,500 psi for f'm = 1500 psi
>
> tia
> da
>
>
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