Wow.
On 8/26/2020 5:02 PM, Ken Hohhof wrote:
I have whatever the fancy word is for fear of heights. If I don’t
look straight ahead, I get vertigo just driving over a freeway overpass.
But one time I figured I’d be OK climbing the 20 ft Rohn 25 a customer
had just put up, out by the road to get line of sight. Someone had
told me never to look up, because the moving clouds would make you
think the tower was falling over. I made the mistake of looking up.
Then I looked down, and saw that the tower really was falling over.
The customer had dug a round hole, and put like 3 bags of concrete mix
in it. It rotated like a ball-and-socket joint.
*From:* AF <[email protected]> *On Behalf Of *[email protected]
*Sent:* Wednesday, August 26, 2020 3:40 PM
*To:* AnimalFarm Microwave Users Group <[email protected]>
*Subject:* Re: [AFMUG] Composite Poles
And twist. It is the twist that can throw off a large 10’ dish aim
without too much effort.
*From:*Matt Hoppes
*Sent:*Wednesday, August 26, 2020 1:05 PM
*To:*AnimalFarm Microwave Users Group
*Subject:*Re: [AFMUG] Composite Poles
Correct me if I’m wrong, but some freestanding towers have a
significant amount of sway at the top of them don’t they?
On Aug 26, 2020, at 2:48 PM, [email protected]
<mailto:[email protected]> <[email protected]
<mailto:[email protected]>> wrote:
At first I read that as 10 inches. Then realized it was 10 feet.
WOW!!!! I'd freak if I saw my pole moving that much in a storm.
2 foot in a breeze does sound pretty scary.
On Wed, Aug 26, 2020 at 2:40 PM Adam Moffett <[email protected]
<mailto:[email protected]>> wrote:
Not in the 5 years they've been up. I drive by some of them
sometimes, and they're just about as smooth now as they were
on the first day. They're supposed to last indefinitely.
Wall thickness on ours was 7/16". If it does break down from
the sun there's a lot more of it to break down than the shell
of an omni.
The scariest thing about them is the flexibility. Everybody
who climbed one commented on it. If you get seasick then this
is not the pole for you. With 4 sectors and a 3' dish the
engineers said it would sway 10' (5' to either side) in a
70mph wind. That was the point where the swaying could cause
enough deflection to misalign an 11ghz backhaul. So that was
the design limit due to deflection, but it was only at
something like 25% of the structural limit. So as awful as
10' sway might sound it was nowhere near breaking. In a
normal everyday breeze it might only move by 2 feet or so, but
that's still frightening if you're used to climbing things
that aren't made of plastic.
On 8/26/2020 2:22 PM, Steve Jones wrote:
Our site that fell over last month had a bunch of
fiberglass onis that the resin was gone from, even looking
at them and you itched, im glad it fell over. Do those
poles do that? it looks like theyre pretty coated
On Wed, Aug 26, 2020 at 12:19 PM Adam Moffett
<[email protected] <mailto:[email protected]>> wrote:
Indeed. My previous employer used 80' fiberglass poles
from a company in Canada called RS Poles.
80' gives you 70' AGL. These were for wireless, not
fiber. But I might be able to talk generally about
the poles.
They're more expensive than wood. They're hollow. No
rot. Supposed to be stronger....but really you tell
them what the load is and they'll engineer the pole
you need for that load. Definitely more bouncy than
wood. You _can_ attach with thru bolts and square
curved washers same as a wooden pole. You _can't_
attach with lags or fetter drives. For light things
like boxes we used self tapping roofing screws and
they seemed to hold just fine. So if you want pole
steps, buy their hardware. They sell pole steps and
safety-climb cables. Their documentation said don't
make holes bigger than 5x the wall thickness, so if
you're thinking of running cables inside the pole then
bear that in mind. Oh if you made maximum size holes
they had to be at least so many inches apart (might
have been 7", not sure).
If you know what you're putting on, they'll predrill
everything for you.
In our case the 80' poles were 2-3x the cost of
equivalent wooden poles, but at 80' length it was
/dramatically /cheaper to transport and install the
sectional fiberglass pole than it was to use the long
wooden ones. If I was doing normal sized poles with
normal loads then I would just do wood.
....although if you tell the company "It needs to
survive Cat4 hurricanes" then I'm sure they'll set the
wall thickness accordingly. With wood you're at the
mercy of how the tree grew and there's a lot of
variance in strength. If that's something you're
after then maybe it's worth a little extra.
I found a couple of old pics:
<hebfkhmicididlgj.png>
<lapkiipoimjefcee.png>
<ijmhcjkbodnkogdk.png>
On 8/26/2020 12:29 PM, Brian Webster wrote:
Adam Moffett can probably offer up some good input.
Thank you,
Brian Webster
www.wirelessmapping.com
<http://www.wirelessmapping.com>
*From:*AF [mailto:[email protected]] *On
Behalf Of *Gino A. Villarini
*Sent:* Wednesday, August 26, 2020 11:31 AM
*To:* AnimalFarm Microwave Users Group
*Subject:* [AFMUG] Composite Poles
Hey List,
Anyone has deployed composite poles for fiber
deployments?
*Gino****Villarini **
*Founder/President
@gvillarini
t: 787.273.4143 Ext. 204
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