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Re: Critical section for shear in wood beams

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I doubt there would be any diagonal compression when a concentrated load is applied
right next to the support. --??

Buddy Showalter wrote:

> NDS Commentary section 3.4.3.1(a) states that this has been a provision of the
> NDS since the first edition (1944). It assumes such loads are carried directly
> to the support by diagonal compression through the depth of the bending member.
>
> *******************
>
> From: Suresh <suresh(--nospam--at)ynn.com>
> To: seaint(--nospam--at)seaint.org
> Subject: Critical section for shear in wood beams
>
> ACI requires that critical shear stress be calculated at the face of
> support rather than a distance  'd'  from the face of support when a
> concentrated load occurs within a distance 'd' from the face of support.
> But UBC 94 chapter 23 without any "Ifs" or "Buts" allows designers to
> neglect ANY loads within a distance 'd' from the support. Is wood
> different than other materials? Anybody know any other relevant code
> provisions?
>