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Re: Engineers and specifications

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On Feb 9, 2005, at 12:51 PM, JLand(--nospam--at) wrote:

Why don't they just call for exactly what they want?  Does this really save the owner money? No wonder so many projects end up in litigation and arbitration.
A lot of people don't know what they want, so they copy freely from anything they can find, including advertizing copy. I learned about specifications the hard way, helping clean up a mess caused by specifying quenched and tempered steel as 'T-1' instead of ASTM A-517 GrF as we should have. Turns out we got a batch of material that was US Steel's T-1, but it was the high hardness T-1 of the sort used for earthmover blades. Strong but brittle--not at all suitable for pressure vessels.

I make an effort to be a real pain in the åss when I see structural material called out as carbon steel or read specifications that don't specify anything.

Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw(--nospam--at)   | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania 1864)

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