September 20, 2005:
Tooth Extraction and Root Canal jobs
on the Pearman roadway.
I continue to be impressed with the skill and art of these Testa
surgeons and dentists. Here is the story of tooth extraction and
a root canal procedure. It starts by a walk from the Mt. Pleasant
side of the Pearman Bridge.
The basic procedure is to cut the concrete roadway into
7 foot strips, remove them and then remove the underlying
girders. Here is a segment of roadway being placed on the
forklift (driven by Jim) by the 345 grapple, Michael (whose wife
Tina continues to encourage me with these stories).
Here Michael's 345 (right) releases the concrete segment onto Jim's
mega-forklift (left) and off Jim goes to the recycling center at the
base of the bridge (Coleman Blvd).
Jim gets a lot of practice driving backwards
Here is Richie - one of the skilled surgeons, who, with a torch,
can cut anything
and Nugget (Mike) who has yet to tell me his story
The extraction process starts with Mike's jack - which hammers
a channel along the length of the expansion joint
and Richie looking on - To see this live,
click here (20 Mb
quicktime video)
After the channel is prepared, Richie suits up for a bit of cutting
while Jim enjoys the comfort of his forklift
Torch (unlit) in hand, Richie walks out on the right girder to cut elements
that bond it to the bridge structure
while Nugget is cutting away on the left side
All the time - Pio is watching and in communication with the home office
Richie cutting a crossbeam
Nugget is making the first cut to sever a crossbeam
and here, Nugget is making the 2nd cut to sever the brace between
the two girders
while Richie is making a July 4th display with his cutting
Next, Nugget cuts the expansion joint and literally extracts a tooth from the
expansion element. Another tooth is extracted and this divides the roadway
girder structure into three components.
Meanwhile, Michael and Jim are just chillin' a bit while the cutting
continues.
And as you can see, Pio is holding one of the teeth - root and all
and a rare photo of Michael, Frank and Pio. Jim takes better photos
than I do
Here are the middle and right girder segments - what we refer to
as the root canal
and to add to the entertainiment two F-somethings have their landing
gear down - I suppose to land somewhere
Michael with his grapple, reaches under the expansion joint and
pulls it up
Oops - it did not want to cooperate - so just as in the dental
chair - a bit of investigation is in order.
Richie goes back down to cut a remaining bolt - that I suppose was
a surprise
Richie watches as Michael takes another pull - and
up comes the middle pair of girders
now Michael pulls the girders backwards and onto the roadway
and gently places it on the road. For a video of the
extraction process
click here
(30 Mb quicktime video)
This is now what the girder structure looks like with one root canal
gone
Nugget uncouples a shackle tied to one set of cables from the girder
pair while Michael is
driving the grappel and Jim is driving the mega-forklife
here Nugget is removes the other shackle that uncouples the other cable
and Jim drags it down to the Mt. Pleasant reprocessing plant. Lots
of practice with backwards driving
a bit more backing up
and a nice view of the Ravenel Bridge
and deposits it in the recycling and reprocessing plant.
Note the stacks of 7 foot roadway segments. Here
concrete is separated from rebar, girders are cut and a lot of
other stuff that minimizes that waste.