In <19970208.083115.5495.30.k1vr@juno.com>, on 02/08/97
at 08:40 AM, k1vr@juno.com (Fred Hopengarten) said:
>As I recall, a perusal of the Rohn 25 footnotes will show that the
>engineering drawings are done at a safety ratio of 3:1. I believe that
>most commercial buildings never exceed a safety ratio of 1.5:1. That's
>why there are so many "overloaded" Rohn 25 systems which have never
>failed.
>From memory, EIA 222-E has the following safety factors: guy wires at 2:1,
steel is rated between 1.5:1 and 1.7:1 depending on several factors related
its size/shape. I don't remember the specifics ... that information is at
the office.
73,
... Joe Subich, W8IK ex-AD8I
<W8IK@ibm.net>
<jsubich@ibm.net>
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