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- To: seaoc(--nospam--at)seaoc.org
- Subject: Expected life of facilities -Reply
- From: Wing Lo <421WLO(--nospam--at)pwcsd.nosc.mil>
- Date: Thu, 23 Jan 1997 08:49:52 -0800
>From engineering economics [way back when], there is a section dealing with "life of a useful plant (or engineering projects)" strictly for "tax write-off" purpose. I assume that the IRS may have some type of guide- line how many years over which an engineering project or a machine the owner can "write off" and at the end of that period, the project/machine would have a "zero value on the book". But that is "on the book"; in reality, it still have some sort of use left in it. I am not sure that that answers your question. Other than that, I guess common sense would apply. For example: a pre-engineered Butler buidling would last, if properly maintained, at least 50 years before it is "beyond repair economically". [Agian it depends on the usage of the building; if you store "corrosive chemicals" in it, the useful life may be shortened.
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