[TowerTalk] LM-470 at 100 MPH

[kb5my at starband.net]

Yes - there are 100 MPH winds in southern California.  I've experienced
them twice since 2001 at my QTH about 40 miles NE of San Diego.  They
lasted for several hours.  Multiple instances yearly of sustained winds of
60-plus are not uncommon here.

73,
Dan  KB5MY/6

>
> 100 MPH winds ??? In California ?? They expecting Global Warming
> to cause Typhoons to hit ??
>
> 73, Dick, W1KSZ> From: k6zz at ccis.com> To: bmaser at tampabay.rr.com;
> towertalk at contesting.com> Date: Sat, 29 Nov 2008 19:40:22 -0800>
> Subject: Re: [TowerTalk] LM-470 at 100 MPH> > Obviously true, however
> the building department won't look> at it that way. They'll want to see
> an> analysis/certification showing the conditions under which> the
> structure will meet the wind loading requirements. They> may accept my
> committment to "keep it cranked down when the> winds are up", but I
> suspect not. I'll find out soon> enough.> > Bob > > ----- Original
> Message Follows -----> From: "Bob Maser" <bmaser at tampabay.rr.com>> To:
> <k6zz at ccis.com>, <towertalk at contesting.com>> Subject: Re: [TowerTalk]
> LM-470 at 100 MPH> Date: Sun, 30 Nov 2008 02:50:01 -0000> > > Anybody
> that leaves a crankup tower up in 100mph wind> > potential deserves to
> lose it. I guarantee you that a> > LM470 cranked all the way down will
> not be blown down in> > any wind. Of course, the elements will be
> stripped off> > the boom
>  long before, then goes the boom.> > > > Bob W6TR> > ----- Original
> Message ----- > > From: "Bob Selbrede, K6ZZ" <k6zz at ccis.com>> > To:
> <towertalk at contesting.com>> > Sent: Sunday, November 30, 2008 1:32 AM>
>> Subject: [TowerTalk] LM-470 at 100 MPH> > > > > > > Hello,> > >> > >
> Has anyone had the Triex LM-470 professionally evaluated> > > for
> antenna load capacity in a 100 MPH Basic Wind Speed> > > zone? Turns
> out our local building code will be changing> > > on 1 Jan 09 to
> require new structures to meet the 100> > > MPH requirement. I suspect
> most free standing crankup> > > towers, fully extended, may not handle
> these wind> > > conditions unloaded let alone with a good size
> tribander> > > on them. How does an 85 MPH 3 second gust rating of 18>
>> > Sq Ft look at 100 MPH? I would estimate around 4 Sq Ft.> > >> > >
> 73, Bob K6ZZ> > >> > > _______________________________________________>
>> >> > >> > >> > > _______________________________________________> > >
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