Hi all;
I was raised in a construction family when cement coated nails and kiln
dried yellow pine was the norm. Now they use Canadian fir and spruce. The
nails are staples. Not in a million years would I add to the stress on the
present houses being built in my area. Wind loads: Our area is rated at 70
mph. A few years ago my $500.00 aerometer was pegged at 100mph. The National
weather bunch here put out a notice if anyone knew what this storm was,
please call them. I am a ME and if I was making tower I would cover my
behind. I would post only conservative wind load #'s.
CU, Bill Wall KC4UZ
----- Original Message -----
From: "Wes and Linda" <wesandlinda@triconet.org>
To: "Mike Murphy" <mmurphy@n-focus.com>; <towertalk@contesting.com>
Sent: Monday, January 15, 2001 11:33 PM
Subject: Re: [TowerTalk] Tower Concerns continued
> At 02:45 PM 1/15/01 -0500, Mike Murphy wrote:
> >I have been watching this post for some time. I can't help but wonder if
we
> >are forgetting that an exterior wall of a house was never meant to take a
> >lateral load, especially from 30 or 40 feet of tower hanging over it. An
> >exterior wall is meant to support the roof, not a tower pushing and
pulling
> >on it.
>
> You better damn betcha that the exterior wall of a house is designed to
> take lateral loads. If you're worried about that (XXX) MPH wind blowing
> against the tower and antennas what do you think is going on with the flat
> wall of the house. The wall typically has a lot more square footage that
> any tower/antenna and is a "flat plate" with a higher drag coefficient
that
> the round stuff in the antenna.
>
> Furthermore, in a good windstorm, the walls are probably holding the roof
> down, not up.
>
> I'm not advocating bracketing to a house. I would never do it to mine and
I
> built it and it's way over engineered, but it happens to be stuccoed and I
> have enough cracking problems.
>
> Nevertheless, don't forget the story of the three little pigs.
>
> Wes N7WS
>
>
>
>
> >
> >I have put up, taken down and serviced a number of towers. And it simply
> >amazes me what hams "get away" with. It may work for a while, maybe
> >forever. But if you need 110 MPH wind survival, put up a free standing
> >tower that is designed for it. Otherwise you are playing with fire, not
to
> >mention taking a chance on pulling down part of your house.
> >
> >Michael Murphy - KD8OK
> >
> >
> >>The bracket is over designed as much as I could. Where it attaches to
the
> >>house it is 5' long and it has three bolts that go through vertical 2x4.
I
> >>have this backed up with a horizontal 2x4. All of this including the
bolts
> >>are stainless steel. Several locals have agreed that this is done
properly
> >>and I believe it to be a better bracket then the one Rohn uses in their
> >>bracketed towers.
> >
> >
> >
> >--
> >FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> >Submissions: towertalk@contesting.com
> >Administrative requests: towertalk-REQUEST@contesting.com
> >Problems: owner-towertalk@contesting.com
> >
> >
> >
>
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
>
--
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