Paul,
Here's the example I was looking for. Check out these two pictures.
http://www.r56audits.com/wp-content/themes/r56-child/images/tower-large-img6.jpg
http://www.r56audits.com/wp-content/themes/r56-child/images/tower-large-img7.jpg
One of the reasons you want this is to limit how much anchor material
loss you get. It may take years or even decades for the anchor rod to
completely corrode, but that means the tower falls over. I've seen this
happen at two towers over the years. And neither of them were grounded
properly like this.
On 3/23/2015 8:46 PM, Paul McCall wrote:
Well phooey.. a lot of this contradicts what my well-pay grounding
expert, and well-recommended from to big EOCs in my area has to say
about it. At least the part of welding to the tower.
I AM glad I asked and could see certainly see how a guy wire under
tension could “break / cut” while cad-welding.
So, in a typical guyed scenario (let’s say 4 levels of guys for
example), I have turnbuckles attached to the guy “Flange/gusset –
whatever you want to call it & deadends connecting the guy wires to
the turnbuckles, the turnbuckles going through a hole in the gussets
would not seem to be a good connection, so attaching the ground wire
just to the gusset I think would be “weak” grounding.
If the guy wires were to continue past the deadend, pass the
turnbuckles, then it could connect to the plate, but how, if the
cadwelding will burn through the guy wire.
Paul
*From:*Af [mailto:[email protected]] *On Behalf Of *George Skorup
(Cyber Broadcasting)
*Sent:* Monday, March 23, 2015 8:42 PM
*To:*
*Subject:* Re: [AFMUG] Cad welding expert advice needed :)
Nope, not close enough to get hit. Just wind vibration as far as I can
tell. Always broken near the wire clamps. If the ground wire was
stranded and could flex, then it probably wouldn't break. At least
that's my theory. Can't hurt to try.
On 3/23/2015 7:25 PM, Erich Kaiser wrote:
Why are they breaking? Is the farmer hitting them?
Erich Kaiser
North Central Tower
[email protected] <mailto:[email protected]>
Office: 630-621-4804
Cell: 630-777-9291
On Mon, Mar 23, 2015 at 7:06 PM, George Skorup (Cyber
Broadcasting) <[email protected] <mailto:[email protected]>> wrote:
I have a problem site that we lose gear at every year (360' FM
site). All of your guy wires are supposed to be bonded at the guy
points (and the actual wires, not the pre-forms). And they're all
broken every year. I've requested year after year that they do NOT
use solid copper wire to tie all of the guys together. Instead,
use like #6 or #4 stranded. But no, it doesn't happen.
BTW, cadwelding is supposed to be done with nickel plated copper
wire. And no, I would not attempt to cadweld to a Rohn 25 or 45
leg. The tubular legs are too thin and you'll burn through them.
If you're using a base plate, that's probably OK.
On 3/23/2015 4:01 PM, Ken Hohhof wrote:
I was not aware you could cadweld to guy wires.
*From:*Paul McCall <mailto:[email protected]>
*Sent:*Monday, March 23, 2015 3:40 PM
*To:*[email protected] <mailto:[email protected]>
*Subject:*[AFMUG] Cad welding expert advice needed :)
First foray into cad welding… actually my logistics guy is
digging into it.
We basically need to do 3 types of welding for towers.
1)Welding copper ground cable to the guy 3/16”, ¼” and 5/16” wires
2)Welding copper ground cable to ground rods 5/8”
3)Welding copper ground cable to Rohn 25G and 45G tower piece.
Looking at lots of models, pieces parts.
Anybody have some practical suggestions on pieces parts,
vendors etc?
Thanks!
Paul McCall, Pres.
PDMNet / Florida Broadband
658 Old Dixie Highway
Vero Beach, FL 32962
772-564-6800 <tel:772-564-6800> office
772-473-0352 <tel:772-473-0352> cell
www.pdmnet.com <http://www.pdmnet.com/>
[email protected] <mailto:[email protected]>
