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Static Pipebursting |

Step #1 - Payout Rod |

Step
#2 - Attach tooling & New Pipe |

Step #3 - Pull in new Pipe |
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To determine the
dimensions of the pits
our technicians use the
PPI formula for launch angles. |
Static Bursting Overview
1 - Payout Rod
- payout the rod/chain down the existing pipe. 350 feet
of rod/chain can be pushed/pulled out in
approximately one hour. Rod/chain can pass through
sweeping bends in pipe systems.
2 - Attach to Tooling - Attach
bursting heads and/or ductile slitter to the rod/chain
end. HDPE pipe is attached to an expander which is
between 20 - 29% larger than the outside diameter of the
pipe being installed.
3 - Pull Back Product - During pull
back, old pipe is fractured or split and pushed out into
the surrounding soil. The new pipe is installed
simultaneously. Pullback operation takes
approximately two hours to install 350 feet of pipe,
depending on soil conditions. |
The Ted Berry
Trenchless Technologies Team has static pipebursting
equipment with 30 ton, 40 ton, 50 ton, and 80 ton
capacities. With the ability to replace pipes from
2"-36".
Pneumatic Pipebursting

Typical pneumatic
project layout for gravity sewer main with manhole
exiting burst head.

Manhole winch
Launch Pit The
Burst Head
Manhole Exiting Burst Head with Ted Berry Company
Trenchless Technologies Team HG12/20 Winch.
Manhole exiting burst heads for 4"-12" pipes are
available in our Livermore, Maine location.
7 1/4" and 8" Hammers are owned and operated daily by
our team.

Pneumatic Bursting Overview
Much like driving a nail pneumatic pipebursting uses an
air powered hammer mounted inside of the bursting head
to fracture, expand, and pull the new pipe into place.
Ted Berry Company Trenchless Technologies Team owns and
operates Earth Tool's Hammerhead equipment. Since we own
our own tools setup and mobilization can be done in a
short amount of time and at a competitive cost.
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1.
Ted Berry Company's HydroGuide HG12 winch
is ruggedly built to meet the demands of pipe
bursting. The winches are designed to facilitate
extraction of burst heads through manholes to
reduce the need for expensive receiving pits.
2.
Excavation costs can be reduced by utilizing
manhole retrieval of the burst head. (Manhole
exiting is a patented process of Earth Tool
Company LLC, US PATENT: US 6,299,382 B1)
3. A
bursting head fitted to the pneumatic tool bursts
damaged pipeline and pushes the fragments into the
surrounding soil. As the tool bursts the pipe, new
product of the same or larger size is pulled in. A
reversible hammer allows for rear exiting of the
pneumatic equipment at completion of the burst.
4.
On larger or longer bursts, lubrication can
increase production and the bursting distance
capability by reducing pipe friction.
5.
New HDPE is attached to the pneumatic pipe
bursting tool and is pulled into place as the tool
follows and bursts the existing line. |
The
newly installed pipe is usually HDPE or High Density
Polyethelyne.
High density polyethylene plastic pipe (HDPE)
delivers exceptional value, unwavering reliability and
remarkable advantages over conventional types of piping.
It’s today's right choice for water, drainage, fuel gas,
conduit and plumbing & heating. Other reasons
HDPE
is a superior choice:
- Long-term service life
- Highly-resistant to
corrosion, abrasion and chemicals
- Strong, durable, flexible and
lightweight
- Longer-length pipe with
leak-proof joints
- Lower labor requirements for
installations
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There is no substitute in polyethylene pipe joining,
for a correctly made fusion joint. Correctly made,
polyethylene pipe joints are equally as strong as
the pipe itself and have the same design life as the
pipe itself. Ted Berry Technicians are trained in
butt-fusion and electro-fusions methods.
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Randy Happel — Apr 01, 2008
Driving into the picturesque New England
village of
Northport,
Maine,
for the first time along its narrow, winding streets
is likened to entering a storybook setting.
Meticulously landscaped yards surround decoratively
painted cottages — blue, yellow and pink in color
and clad with ornate trim work — many of which are
individually named and identified by rustic,
hand-painted signs.
Located on
Maine’s
rugged eastern coast and home to approximately 1,500
residents, Northport is a resort community comprised
mostly of seasonal dwellers. The place is so remote
that the majority of
Maine’s
1.4 million residents have never heard of it.
Those who make Northport their year-round residence
go to great lengths to maintain the quaint integrity
of this historic community, which has roots that
date back to the early 1600s with the arrival of a
contingent of French explorers. So it’s not
surprising that when Matt Timberlake and crew
arrived in town to tackle an intricate sewer line
rehab project, the locals took interest.
“You have to understand the dynamics of the
community to fully understand this project,”
Timberlake says. “I don’t remember a time in the
history of our company when a condition for
accepting our proposal included a provision to
educate affected residents about the process of how
we would complete the project so homeowners
understood exactly what was going on. The whole
community got involved.”
Timberlake is vice president of the family-owned and
operated Ted Berry Co., headquartered in nearby
Livermore,
Maine.
Ted Berry Co. has been in business for more than 35
years and specializes in offering diverse methods of
completing infrastructure installation and rehab
projects. Timberlake had worked with the Northport
Village Corp. since 2005, when Ted Berry Co. was
contracted to implement an ongoing inspection of the
town’s sewer system. During one of their routine
inspections, Timberlake’s crew discovered a section
of pipe that had become infiltrated by root growth.
Location, Location, Location
According to Timberlake, the project was a textbook
case for a pipe burst. The affected sewer line
originated from a residential street at its upper
end, continued under four private residences, wound
between two other homes and ended at a manhole
located within 25 ft of the high tide mark of the
Atlantic Ocean.
Although the sewer discharge line was only about 200
ft in length, the beginning and ending manholes were
not within view of each other. Excavation was a
concern at the downstream end, given its proximity
to the ocean and the highly visible Northport Yacht
Club.
“Many things told us this was not an excavation
job,” Timberlake says. “There were established trees
and shrubs, walkways, lawns, patios and decorations
to contend with. Had we plowed a trench, we would
have had to dig right alongside the foundation of a
couple of these homes. The long-term effects that
disturbing a foundation may cause brought a whole
other set of potential issues. Trenching was just
not an option.”
Timberlake and trenchless technology supervisor
Shawn Ready rolled up their sleeves over dinner one
night and got to work on a proposal. Both had been
on the inspection team that discovered the root
infiltration problem, so the two men were intimately
familiar with the layout. They quickly came to a
consensus on the best rehab method, but the details
of the plan took a bit more time and included
stipulations that were somewhat unconventional
compared to proposals the two had drawn up in the
past.
“Although the village corporation had a legal
easement to go through individual properties in
order to maintain the sewer line, their first
concern was how repairing it would affect the
residents,” Timberlake says. “Explaining how we
would complete the project to the affected
homeowners and getting their buy-in made it an easy
sell to the council slated to approve the job.”
The plan Timberlake and Ready proposed included
going door-to-door with a representative of the
village corporation to explain to residents exactly
what needed to happen and how it would be
accomplished. By doing so, Timberlake and his crew
immediately won over the locals.
In order to preserve the downstream manhole near the
shoreline and eliminate the need to employ
excavation, the plan Timberlake and Ready devised
called for pneumatic pipe bursting. Although the
company had completed 40 to 50 static bursts in the
past, this would be the first pneumatic burst for
Ready and his crew. Therefore, Ready consulted with
Brian Cowles, Ted Berry’s HammerHead rep, for
guidance during the pre-planning phase and to ensure
his crew was well-versed in the project’s details
before getting started.
“We had traveled with Hammerhead to several
pneumatic jobsites over the previous couple of
years, so we were very familiar with the process,”
Timberlake says. “It wasn’t really anything all that
new. Some of the details of the pneumatic hammer,
however, were things that internally we spent a
great deal of time planning in advance. And
HammerHead was a tremendous help.”
Timberlake went on to explain that the project would
have been very easy to complete using static
equipment, but he didn’t want to take any chances
removing the downhill manhole or digging that close
to the shoreline.
“Protecting the integrity of the site was important
to us,” Timberlake says. “Nobody from the village
corporation actually told us we had to do it a
certain way. But we knew the smaller footprint we
left meant they would be more apt to have us back.
Plus, that’s just how we do business.”
After many hours of planning followed by a day of
preparation, the burst commenced at 9 a.m. on a
November morning. Ready and his crew had positioned
a HammerHead HG12, a 12-ton winch, on the lower end
with an 8-in. hammer and a 10-in. burst head at the
topside. Using the “Manhole Exit Method,” a process
patented by HammerHead that eliminates one
excavation at the manhole, decreased the amount of
excavation necessary by 50 percent. By lunchtime,
the burst had been completed and the new pipe was in
place. By early afternoon, backfilling was complete
and services were restored.
“The job was completed in under four hours,”
Timberlake says, “witnessed by what we
affectionately called the ‘advisory committee’ …
made up of local residents. One of the homeowners
was present when we dug the topside launch pit on
his property. He had approximately 60 plastic pink
flamingos randomly situated on the site. I have
pictures of Shawn [Ready] repositioning each
flamingo back to its original spot from the map we
had created prior to initiating the burst. Most were
facing east, but there were a few that faced west.
We made sure that we replaced each of them in their
original spots and facing the same direction.”
Tips for Other Contractors
While proud of the work his crew
performed on the Northport project, Timberlake
viewed the process as just another example of how
Ted Berry Co. approaches every job. And while a
pneumatic burst was uncharted territory for his
company, Timberlake has some valuable advice for
other contractors.
“Don’t be too proud to ask for help,” he says.
“Contractors are typically bad at that. We’ve been
in business long enough that we know we don’t know
everything. But we have connections to people who
have the know-how when we are in need of technical
support. Like our relationship with HammerHead, for
example, they were onsite from start to finish
assisting with completing our company’s first
pneumatic burst.”
Timberlake is also a firm believer in involving all
interested parties in the project — not only his own
crew, but the supervisors, project managers and the
affected residents.
“Educate the public,” Timberlake says. “A lot of
times we show up on these jobsites and the public is
standing there looking at us like, ‘What the heck
are you guys doing here?’ We make it a point to go
out of our way to knock on doors and let people know
what we are up to. I think contractors as a whole
need to get better at that.”
A Job Well Done
Aside from all the planning, calculations and
gratification of a job well done, it’s the approval
of local residents that means the most to
Timberlake.
“I understand their anxiety,” he says. “I know how I
would feel if a bunch of guys in vests and hard hats
were to invade my property with all this equipment
and not knowing what was going to happen. We never
lose sight of that. I guess the biggest compliment
to come from the Northport job was when the guy who
was there when we first started the burst later
renamed his home ‘Sewer View Cottage.’ We laughed
about it at the time, but afterward, it really sunk
in just how monumental that was.”
Randy Happel is a technical writer, based in Des
Moines,
Iowa. |
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Ted Berry Trenchless Technologies prepare
a plastic pipe for insertion into an
existing sewer line on Stearns Road in
Ogunquit Tuesday morning.
December 06, 2007 6:00 AM
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OGUNQUIT —
Residents on Stearns
Road may have noticed some increased activity
recently. That's because the Ogunquit Sewer District
is getting ready to replace an aged sewer main
there. What's interesting about the project, though,
is the technology the district will use to replace
the old pipe. It's called pipe-bursting and the
process minimizes the need to dig up the road there
to lay the new pipe.
"We're upgrading an old cast
iron forced main that was placed there in 1962 or
'63," said Phil Pickering, the district's
Superintendent. "It's 1,600 feet. We'll upgrade the
4-inch cast iron pipe to a 6-inch high density
polyethylene pipe. We'll use a pipe-bursting method,
the same as we successfully used on the River Road
project."
Put simply, pipe-bursting is
a method in which an existing pipe is fractured and
displaced while a new one is drawn in to replace it.
"We'll dig pits that are 400
feet apart," Pickering said. "We use a hydraulic
hammerhead. We insert steel rods to pull the new
pipe through and burst the old pipe. The rods have a
cutting head that scores the old pipe. Then a bull
head pushes the old pipe aside. It pulls a 400-foot
length of the new pipe into the hole."
The U.S. Army Corps of
Engineers' Guidelines for Pipe Bursting offers a
detailed description of the method: "Typical
pipe-bursting involves the insertion of a conically
shaped tool (bursting head) into the old pipe,"
according to the Guidelines. "The head fractures the
old pipe and forces its fragments into the
surrounding soil. At the same time, a new pipe is
pulled or pushed in behind the bursting head. The
base of the bursting head is larger than the inside
diameter of the old pipe to cause the fracturing and
slightly larger than the outside diameter of the new
pipe, to reduce friction on the new pipe and to
provide space for maneuvering the pipe."
Pickering explained that the
400-foot lengths of pipe will consist of 10, 40-foot
lengths that are fused together. "The pipe is all
fused together, so there are no weak points," he
said.
With the exception of the
pits that will be dug, excavation is minimal. "It
saves time, materials, and tearing up the road,"
said Pickering. "It's very cost-effective."
The cost of the project is
$90,000, Pickering said. The Sewer District, as is
often its custom, will serve as general contractor
on the project overseeing the work being done. "We
got price estimates from two contractors," Pickering
said. "A third contractor we approached never
submitted anything. [The winning bidder] is the Ted
Berry Company of Livermore."
The project will start at the
lighthouse and work its way up Stearns Road.
Pickering estimated that the entire project would
take five days, with another week or so for cleaning
things up. "There will also be some minor excavation
around the corners," he said.
The upgrade should eliminate
the need for further upgrades for quite some time,
given the quality of the new plastic pipe. "It has
an estimated 100-year lifespan," Pickering said.
"But it could be closer to 500 years. It's the type
of material that nothing affects." |