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Click on photos to enlarge |
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2006 Construction Season
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Beginning Stage One
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During
The following nine (9) photos and one (1) video clip show the
boring of the storm sewer pipe underneath the Norfolk Southern
Railroad. The storm sewer main was tunneled underneath the
tracks so that train traffic wouldn’t be interrupted. |
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The boring
machine travels along rails as it drills a hole for the storm
sewer pipe while pushing it into the tunnel. |
Boring
Machine Top View. |
These are
the storm sewer pipes with the augers in them. |
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This pipe
section is being pushed into the tunnel. There is a tube
and a rod on top of the pipe. The tube is filled with
water and is the level they use to measure the slope of the
pipe. The rod is the steering mechanism. Changing
the rod tension with a ratchet wrench adjusts the angle of the
bore. |
This gauge
shows the slope of the pipe. |
Excavated
earth is ejected out of a side door on the boring machine.
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Earth is
removed with a hydraulic “clam shell” bucket. |
Additional
sections of storm sewer pipe are welded to the previous piece
until the jacking and boring is complete. |
Duce is
building the storm sewer main in the middle of Main Street.
The inlets will drain into this pipe and the water will be
carried to the outlet at Stony Creek near the Stone Arch Bridge. |
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Video Clip
(.wmv file) - to open the video clip you must have
Windows Media Player installed on your computer.
File size is 5.3 MB. |
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Beginning Stage Two
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During
The
following sequence of 11 photographs illustrates the concrete
paving process. After the concrete cures for approximately three
days, it is strong enough to drive on |
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A 12”
gravel base is constructed under the concrete pavement to
improve the soil strength and promote drainage. Duce
Construction is building 2 lanes of pavement and the curb and
gutter at the same time. In order to do that, the
reinforcement bars are installed during the concrete pour.
This photo shows the dowel baskets ready to be set. |
This
reinforcement component is installed between the lanes. |
The
laborers are installing the cross-joint reinforcement ahead of
the concrete placement. |
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The
laborers are installing the cross-joint reinforcement ahead of
the concrete placement. |
This shows
the concrete hopper and the vibrators that consolidate the
concrete. |
Concrete is
dumped on the ground in front of the paver. |
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This device
finishes the concrete automatically. |
This shows
the concrete pavement after it has been finished. |
This
machine automatically grooves the pavement. Grooves
provide better traction in wet weather. |
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Video Clip
(.wmv file) - to open the video clip you must have
Windows Media Player installed on your computer.
File size is 6.2 MB. |
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This machine
sprays a curing compound on the concrete to reduce evaporation
which improves concrete strength. |
Forms are
placed when the curb and gutter machine is turned off; on a side
street for example. |
The concrete
paving on Main Street was completed using a slip-form paver,
which allows the contractor to pour two east bound lanes and the
curb and gutter at the same time without requiring forms
(typically wooden boards) to be placed on the exposed edges.
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Beginning Stage Three
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End Stage Three |
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The retaining
wall picture shows a completed landscaping block retaining wall
at the Danville United Church of Christ on the southwest corner
of Buchanan and Main Street. |
The railroad
picture shows the new railroad median looking west. The
crossing was revised from a single outside crossing gate to two
arms that come down from both sides. |
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