On 6/12/17 9:15 AM, Wilson Lamb wrote:
“Most zoning ordinances stipulate a setback requirement for a tower. Around here, the
setback from the nearest property line must be equal to or greater than 75% of the total
height of the tower.”
And what’s the sense of that? Why isn’t the top 25% dangerous? Actually, it’s likely the
most dangerous. It’s moving fastest and has that big ol’ antenna antenna on it.
you're asking for an engineering rationale for a "that sounds like a
decent requirement" kind of rule.
I suspect that a lot of these get defined by "there's a lot of 40 foot
things around, and lots are 60 feet wide, and if we make it 100%, a lot
of people will yell, but if we make it 75%, then the number of people
who complain is sufficiently small"
Or, based on somebody else's 75% rule, which is based on yet a 3rd 75%
rule, etc.
Or it's based on guying radius, and nobody thought that it should change
for a self supporter.
I've also heard of 50%, and of course, there's plenty of 100% rules out
there.
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