[TowerTalk] LM-470 at 100 MPH

[RICHARD SOLOMON]

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> > >> > > _______________________________________________> > >> > >> > >> > > _______________________________________________> > > TowerTalk mailing list> > > TowerTalk at contesting.com> > > http://lists.contesting.com/mailman/listinfo/towertalk > > > > _______________________________________________> > > > > > > > _______________________________________________> > TowerTalk mailing list> > TowerTalk at contesting.com> > http://lists.contesting.com/mailman/listinfo/towertalk > _______________________________________________> > > > _______________________________________________> TowerTalk mailing list> TowerTalk at contesting.com> http://lists.contesting.com/mailman/listinfo/towertalk