
The economics of half an inch
The operator of the
single Link-Belt LS-248H Series II
crawler crane delicately, but
steadily, lifted the 60-ton,
212-foot-long, 7’6” tall steel
bridge girder with its 106'
long strongback stiffener and
rigging. Once the cumbersome load
was ten feet above the ground, it
was then slowly inched forward.
At the same time, Mike Femoyer
commenced to rotate the crane's
carbody 90° counterclockwise and
continued to hoist its lengthy
ponderous load a total of 35 feet
in the air. It was an almost
surreal sight as it relentlessly
creaked forward in the Stygian
darkness, pierced only by the
glare of four high-powered portable
light stands. Almost no one
watching the event dared to take a
breath.
In the end, the first of five
102,000-pound girders was slowly
lowered into position with the
five-part line from the crane's
160' long straight boom. It was
set on the awaiting anchor bolts
and the neoprene bearing pads atop
the twin new concrete bridge
abutments. In its final position,
the Link-Belt crane's boom was at
a 78° angle at a 35' radius.
The economics were simple, why
use two when one will do? The easy
answer to hanging a very long
flexible highway bridge beam
appeared to be to put a crane on
each end of the girder and swing
it into position. But that's not
as simple and as cost efficient as
it might appear.
There would be the cooperation,
coordination and communication
factors of several contractors and
two very large cranes working
together. Often easier said than
done, especially when you are
talking in terms of half an inch
or less for the final movement
onto the anchor bolts. Then there
is the cost. Why double the
expense? After all, the bottom
line is profit and that is not a
four-letter word in today's
economic conditions.
When Hal Jones Contractor,
Inc., a Jacksonville, FL. based
construction company, encountered
the extremely challenging steel
erection project, they had been
there before. They immediately
brought in their Link-Belt LS-248H
II to solve the
situation. The company had a $10
million contract to build a series
of ten new bridges, two each at
five separate locations, for a
highway bypass in their hometown.
They had to hang some very long
structural steel beams, do it
quickly and do it right the first
time!
Jones was working as the prime
subcontractor to Milestone-Carlo,
the general contractor on a $26
million, 2.6-mile long section of
Rte 9A (future I-295) around the
state's fourth largest city (in
population). Three locations call
for prestressed concrete beams and
two locations call for steel beam
structures. The five fabricated
girders for the Beach Boulevard
Bridge were so long that they
arrived on-site from the
fabricator, Carolina Steel
Corporation, in three pieces each.
They had to be bolted together on
the project. No problem, this was
a daylight assembly job, done in
the wide median (two inside lanes
blocked for the construction), of
one of Jacksonville's most heavily
traveled thoroughfares.
Problems were encountered,
however, for the erection of the
beams. Beach Boulevard has an ADT
of between 25,000 and 30,000
vehicles every 24 hours. These
peak twice a day during the
morning and evening weekday rush
hours. On the weekend, there is a
heavy flow Friday night, all day
Saturday and Sunday and again
Sunday night as summer tourism
traffic flows to and from
Jacksonville Beach and the
Atlantic Ocean.
FDOT elected to have the steel
erected at night, during the start
of the work week. A traffic detour,
manned by off duty Duval County
sheriff's deputies, would be set
up between the hours of 10 PM and
6AM. The highway section would
close down and the steel hung.
Hal Jones, Contractor, Inc, a
Link-Belt crane owner since its
inception, is a marine contractor
and bridge builder. They work
primarily in Florida and
throughout the Southeast United
States. The company was formed
late in the last decade of the
20th century. Six men, working for
another firm at the time, all
agreed that, if they were ever to
strike out on their own, that time
had come.
Hal Jones, Jr. who became and
remains as president of the new
company, headed the group. The men
remain the management nucleus of
the firm today.
Hal Jones, III (Tinker) is a
vice president and project manager
of the Jacksonville Bridge
project. They began work on it in
2002 and estimate its completion
in 2004.
FDOT brought in Morales, Shumer
& Mock, Inc, an outside design and
engineering firm because of
Project 72002-3535's complexity.
They also retained the Parsons
Transportation Group and
Jones-Edmunds and Associates
Construction and Engineering
Services to perform the
construction engineering
inspection. Project Manager Tom
Woods was their on-site
representative. The state,
however, was not alone in their
thinking. Jones brought a
consultant in to assist with its
erection plans on the Beach
Boulevard Bridge. The reason?
Safety of its men and the public
is paramount at Hal Jones
Contractor, Inc.
The bridge builder brought in a
Link-Belt RTC-8060 to hold the
first beam in place while the
LS-248H repeatedly went back and
brought forward the remaining four
girders. The 60-ton capacity crane
was also used to position the
structural connectors between the
girders.
"The 200 ton capacity Link-Belt
LS-248H Series II has been a very
reliable crane for us. It works
well in the rain as shown by the
three days of intermittent showers
that we have endured on this
project. It is self erecting and
dismantling without the need of a
second support crane," said Hal
Jones III.
"The 200-ton capacity crane is
very maneuverable and gets around
smoothly for a big rig. Since we
purchased it new, we have driven
piling, placed concrete and
erected and stripped form work
with it. We have used it on
demolition jobs and now for
erection of 212' long steel bridge
girders. It's been a good rig for
us without any unanticipated
downtime. Of course, we invest a
considerable amount of time and
money on preventive maintenance
and routine service, too. But
that's what it takes to maintain
any machine today," concluded the
company project manager and vice
president.
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