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Re: Mill tests

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> This is a question I've have dealt with for years and have resolved using
> the following simple logic.
> If you check the stress level of a cantilevered 1-1/4" std. pipe for a
> railing post using the 200# lateral force at the top using a 42" height,
> will overstress the pipe (fb=35.74 ksi).  A 1-1/2" std. pipe fb=25.77 ksi
> which is 73.6% of yield (Fy=35 ksi).  I use 1-1/2" pipe to avoid yielding
> the pipe.

That's what our office normally does, and is what started the whole thread.
The fabricator on a project, however, wanted to use A500 HSS 1.660"x 0.140 .
He provided a mill test certification indicating a yield of 63,000 psi for
the actual pipe to be used (minimum yield is 42,000 psi).

The HSS 1.660"x0.140 will work as far as stress is concerned.

Jason W. Kilgore
Leigh & O'Kane, L.L.C.
(816) 444-3144