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 <http://www.aeronetpr.com/> <https://www.inc.com/profile/aeronet> <https://www.facebook.com/aeronetpr/> <https://www.instagram.com/aeronetpr/?hl=en> <https://www.linkedin.com/company/aeronet-broadband-corp> <https://twitter.com/AeroNetPR?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor> <https://www.youtube.com/channel/UCr2Q9WBrAYVm3Fn970Jd6VA> <http://www.aeronetpr.com> www.aeronetpr.com | Metro Office Park #18 Suite 304 Guaynabo, PR 00968 -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com _____ -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
