Climbing a 540 metre transmitter antenna

[kreed]

On Sep 21, 10:02 am, "Metro" <stand@attention> wrote:

"Sylvia Else" <syl...@not.here.invalid> wrote in message

news:8fodjaFfhaU1@mid.individual.net...



On 20/09/2010 4:28 PM, Metro wrote:
"Sylvia Else"<syl...@not.here.invalid>  wrote in message
news:8focevF9f6U1@mid.individual.net...
On 20/09/2010 3:51 PM, Metro wrote:
"Sylvia Else"<syl...@not.here.invalid>   wrote in message
news:8fmaseFqivU1@mid.individual.net...
On 17/09/2010 7:33 PM, Mark Harriss wrote:

I'd have trouble doing this guys job:
http://www.koreus.com/video/reparer-antenne-540m.html#

What struck me is that although clear provision has been made for
climbing
most of it, there are places where doing so is unnecessarily
difficult.
You can see the climber trying different hand-holds, and even the
final
choice doesn't seem so secure. Climbing down at those places may be
even
more dangerous.

Sylvia.

You would have hope that the welds under the paint work on those pegs
at
the
top were in good condition. When climbing masts on ships we always gave
the
peg above you a good hit to ensure good adhesion. We were also trained
to
use the side rails where possible when climbing a ladder and not the
rungs
for the same reason.

Though the brackets are each held by two welds, and presumably both
would
have to fail before the rung would fall off.

I'd be more worried about a failure of the rung where it goes through
the
bracket.

Still, maybe there's a welder somewhere looking at the video and saying
"Sheesh, I didn't know that was what it was for, and I'd had a lot to
drink the previous night."

Sylvia.

Look once again. You will see pegs with one weld at the left hand side as
he
is climbs the spire at the very top

I can't see it.

I'm using

http://www.youtube.com/watch?v=g79byk4ytxg

Can you point to a specific second that shows what you mean?

Sylvia.

I.46 mins elapsed and 2.14 mins elapsed. I agree on watching the clip again
the pegs are not quite the same at the very top. There he has to rely on a
peg with one end threaded with a nut either side of the 'U' bracket.
Something like a binding head bolt.

It does look exactly like a binding head bolt. They just look welded
to me.
Wouldn't want them to corrode.


Also those pegs don't look very wide at that first point. You wouldn't
want big feet.


My feet are tingling just watching this

 

[Sylvia Else]

On 21/09/2010 10:02 AM, Metro wrote:

"Sylvia Else"<sylvia@not.here.invalid> wrote in message
news:8fodjaFfhaU1@mid.individual.net...
On 20/09/2010 4:28 PM, Metro wrote:
"Sylvia Else"<sylvia@not.here.invalid> wrote in message
news:8focevF9f6U1@mid.individual.net...
On 20/09/2010 3:51 PM, Metro wrote:
"Sylvia Else"<sylvia@not.here.invalid> wrote in message
news:8fmaseFqivU1@mid.individual.net...
On 17/09/2010 7:33 PM, Mark Harriss wrote:

I'd have trouble doing this guys job:
http://www.koreus.com/video/reparer-antenne-540m.html#

What struck me is that although clear provision has been made for
climbing
most of it, there are places where doing so is unnecessarily
difficult.
You can see the climber trying different hand-holds, and even the
final
choice doesn't seem so secure. Climbing down at those places may be
even
more dangerous.

Sylvia.

You would have hope that the welds under the paint work on those pegs
at
the
top were in good condition. When climbing masts on ships we always gave
the
peg above you a good hit to ensure good adhesion. We were also trained
to
use the side rails where possible when climbing a ladder and not the
rungs
for the same reason.



Though the brackets are each held by two welds, and presumably both
would
have to fail before the rung would fall off.

I'd be more worried about a failure of the rung where it goes through
the
bracket.

Still, maybe there's a welder somewhere looking at the video and saying
"Sheesh, I didn't know that was what it was for, and I'd had a lot to
drink the previous night."

Sylvia.


Look once again. You will see pegs with one weld at the left hand side as
he
is climbs the spire at the very top



I can't see it.

I'm using

http://www.youtube.com/watch?v=g79byk4ytxg

Can you point to a specific second that shows what you mean?

Sylvia.

I.46 mins elapsed and 2.14 mins elapsed.

Ok, yes, those could be welded on. Indeed, there's a degree of
non-uniformity where they are attached, which boths suggests they're
welded, and raises questions about qualify control.

I'll just tell my agent not to book me for work on that tower.

Sylvia.