Thanks to all for their thoughts, both on and off the reflector.
Except for Utility company surplus yards, it appears as though those light
poles are expensive and big enough to be unusable at (my) ham level.
For now my crankup handles my aluminum antennas, and I will likely be
setting up a 25 tower for a wire support.
73 all,
Rusty, na5tr
----- Original Message -----
From: "Pat Barthelow" <aa6eg@hotmail.com>
To: <n4zkf@n4zkf.com>; <towertalk@contesting.com>
Sent: Friday, April 18, 2008 2:55 PM
Subject: Re: [TowerTalk] Highway light poles
>
> A Google Search of Stadium Lighting brings some interesting results re
> tall lighting poles
> as found in stadiums. At Monterey Peninsula College, their Football field
> had massive 100
> footers that I once looked into as antenna supports. (If we could get
> permission, to put antennas up, we would have used the press box as a temp
> contest ops shack) Each was 100 ft tall, supported 18 huge
> lamps and had huge concrete foundations, running 19 ft deep. I think new,
> such poles would be
> cost prohibitive, but there were listings on google for used stadium
> lighting (but that I think is mostly the lamps) that might yield sources
> of used tall poles.
>
> I've noticed news items recently of a lot of old
> stadiums being demolished, in favor of new designs. Also of school
> closings. Maybe there
> are sources of used large sturdy poles there. Though at that level,
> EVERYTHING about the pole seems
> to be non trivial, and expensive, transport, foundation design and
> construction, dismantling, erection, etc
> Somewhere in those google listings were some cost analysis of lighting and
> other stadium expenses, and
> it will astonish you. Yearly water budgets just for grass of $300K(!)
> Lighting Electricity budgets, you dont even want to know about.
>
> All the best,
> Pat Barthelow (916) 315-9271
> aa6eg@hotmail.com
> http://www.jamesburgdish.org
>
>
>> From: n4zkf@n4zkf.com
>> To: towertalk@contesting.com
>> Date: Thu, 17 Apr 2008 06:19:52 -0400
>> Subject: Re: [TowerTalk] Highway light poles
>>
>>
>> I believe your talking about Monopoles that hold the cell antennas. A
>> whole
>> different animal
>> than the light pole. You are correct when you say a massive mat and pier
>> or
>> caisson whichever
>> it uses.
>>
>> The company I work for has a little over 1000 Monopoles, SSV, and guyed
>> towers in Florida
>> alone. Monopoles are a pain in the butt. They don't have the structural
>> capability of the
>> other two. You run out of room fast on the inside running coax ect.
>>
>> Dave
>> n4zkf
>>
>>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com
>> [mailto:towertalk-bounces@contesting.com] On Behalf Of Roger (K8RI)
>> Sent: Thursday, April 17, 2008 12:53 AM
>> To: Tower Talk
>> Subject: Re: [TowerTalk] Highway light poles
>>
>> Jim Lux wrote:
>> > Scott W3TX wrote:
>> >
>> >> The significant limiting issue for the light poles is the windload
>> >> and weight they are engineered to carry with regard to the
>> >> appropriate engineering analysis ie. EIA-TIA-222-F (or G, depending
>> >> upon
>> locality).
>> >>
>> >
>> > If you're talking about the poles with a cluster of 8 big luminaires
>> > up top, I suspect they've got plenty of load margin for antennas.
>> >
>> > They're typically mounted to a fairly deep pier or caisson (30 ft deep
>> > 5 feet in diameter, for one I saw)
>> >
>> >
>> There's a lumber yard in town that has something similar supporting a
>> passel
>> of cell phone antennas. Like above the pier or caisson is massive and
>> DEEP.
>> They don't even wiggle in 70 MPH gusts. The one I'm thinking of was
>> limited
>> to either 160 or 180 feet due to proximity to the airport, but gives good
>> coverage city wide. Of course if you fly you find these things are like
>> fleas on a dog. In this flatland towers vary normally between 250 to near
>> 500 feet. Except for the city it's low population density (relatively)
>> and
>> the towers are spread out quite a ways so they tend toward the taller
>> ones.
>>
>> Most are conventional guyed or large self supporting structures.
>>
>> 73
>>
>> Roger (K8RI)
>> > The base is secured with a dozen or so 2" bolts, so it can take a
>> > pretty hefty bending load. The base is probably 16-20" in diameter
>> > (without the flange).
>> >
>> >
>> > They've started installing new freeway signs near where I live, and
>> > they're of comparable size, not necessarily height, but certainly in
>> > loads. The post supports a fairly large sign that's cantelievered
>> > over the road. The sign is a steel truss, 10ft high, 30 feet wide,
>> > and maybe
>> > 5 feet thick, with a big flat plane of a sign on it. I'd imagine
>> > they're designed to take a 0.6g seismic load as well.
>> >
>> > _______________________________________________
>> >
>> >
>> >
>> > _______________________________________________
>> > TowerTalk mailing list
>> > TowerTalk@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/towertalk
>> >
>> >
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|