From: David Robbins
Sent: Monday, September 20, 2010 6:26 AM
To: jim.thom@telus.net
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Climbing
that would of course require either an installed line, which i would not trust
due to weather and wear issues... or someone to climb up to attach it before it
was used each time, kind of defeats the purpose.
## I can't see any wear issue on a 3/8" galvanized winch cable, esp with a
15,750 lb breaking strength rating....and zero weight load on it 99% of the
time. You would have the same WX and wear issues
on the permanently installed 3/8" safety cable....and how often do they ever
get changed out ?
## here's another thought....for commercial applications. The CSA rules up
here state that only ONE individual can be hooked to the safety cable at any
one time. If that's the case, and say the fellow
passes out/ heart attack, etc.... then how is anybody supposed to go up there
to help him...using the same safety cable ? Even in an emergency case like
this, the 2nd climber hooked onto the
same safety cable, the 1st climber could have tools falling onto the 2nd
climber. What's really required is a SECOND safety cable, on a different face
/ leg of the tower. Then if there was any maintenance
issues with the top termination/cable, etc of either safety cable, you would
always have a redundant safety cable. The cost of a 2nd safety cable would
be peanuts compared to the cost of the tower.
The average cost of a typ cell site here in town is $500K. $501K is not abt
to break the budget.
Jim VE7RF
Sep 20, 2010 07:24:28 AM, jim.thom@telus.net wrote:
Date: Sun, 19 Sep 2010 15:57:49 -0400
From: "Wilson Lamb"
Subject: [TowerTalk] Climbing
The video has certainly generated a lot of talk, some valuable.
Does anyone use a belay? A competent groundie could keep a line snug as you
go up and down, saving you the trouble of all that hooking. Once at a
worksite, you could hook on and relieve the groundie for other tasks.
Wlson
W4BOH
## I had the same thought a week ago. Some kind of power winch would be cool,
then just lift the climber up the side of the tower. He could still be hooked
onto the
separate safety cable too, so if the winch cable broke, jammed, etc, the
climber is
still restrained at all times. 0-300' in 60 secs.
later.. Jim VE7RF
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