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[TowerTalk] Rigging (crane) question

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Subject: [TowerTalk] Rigging (crane) question
From: (
Date: Fri, 1 Feb 2002 19:38:35 -0600
I've participated in two crane raisings of 120 ft and 130 ft of R45.

The 130 ft tower was assembled and guyed in 40 ft sections
which were raised individually.  We used 3 slings, down through
the center, around a leg and back up through the center.  This
allowed the 40 ft sections to hang perfectly straight.  The guys
were coiled up and taped to each leg.  This was in a tight space
next to a house right on the edge of a cliff with lots of trees.

The 120 ft tower was assembled and guyed in 30 ft sections.
The TOP (10 ft) section with mast, C31XR and F12 WARC 7 
were preassembled on a short piece in the ground and raised 
as an assembly.  We had to be careful to align the elements 
to fit around the crane boom when the top section was aligned
with the tower.  A single heavy duty sling was used and the
climber had to pull each section vertical during assembly.
I recommend 3 slings.  The guys were laid out in a straight 
line from each 30 ft section.  There was LOTS of room in 
the cotton field :-). Total assembly time for the tower 
and antennas was approximately 5 hours with 4 ground 

I vote for a conservative 2 section lift on your 100 ft R55 tower.

Tom  N4KG

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