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Re: railing design

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given specifics on the flat top rail and the logic that it can span to
introduce more verts, what does the top span to in that case?

Sam Chang wrote:

> Since the verticals are so close to each other, the kind of flat stock top
> rail plays an important role in the continuable verticals.
> I don't recall any deflection requirement on the rail deflections.  I would
> recommend a limit of not exceeding 1/120 for the rail height.  Which is
> about 3/8" for a 3'-6" high rail.
> Sam
> At 11:38 AM 2/15/99 -0600, you wrote:
> >i have a handrail that has 1/2" X 1/2" verticals at 4" o.c. with a
> >nominal flat stock top horizontal.  in applying the code required 200 #
> >horizontal load what effective width is allowed.  another words how many
> >verticals can contribute?
> >
> >another question is, what is the codefied deflection criteria?
> >
> >
> >