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HIGHWAY & RAILROAD CULVERT INSTALLATION & REPLACEMENT WITH PIPE RAMMING
PRESENTER(S) NAMES
FACTS ABOUT THE U.S RAIL SYSTEMC
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G• Critical part of US transportation
infrastructure. • More than 150,000 miles of
mainline rail routes.• Moves more freight than any
other rail system in any other country.
• SOURCE: American Association of Railroads
DRAINAGE PROBLEMS
• Lack of maintenance• Lack of inspection programs• Lack of capacity/flow, flooding
and liability• Ponding of water causes
pavement and sub grade deterioration and may lead to washout failures
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WASHOUTC
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WASHOUTC
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G• The failure rate has the potential
to cause property damage and loss of life.
• Lack of maintenance and delays in repairs has translated into soaring construction expenditures.
PROBLEMS AREN’T LIMITED TO RAILC
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What is Pipe Ramming?
A pneumatic hammer installs an open ended steel casing that is cleaned out during and after completion of pipe installation.
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PIPE RAMMING APPLICATIONS
Steel casing installation for:• Water• Sewer• Gas• Drainage culverts
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Advantages
• Trenchless• Able to swallow rock as large as the
inside diameter of the casing• Method does not remove soil until
casing is installed• Minimizes voids
–Roads–Railroads
• Reduced soil compaction
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Preferred for Adverse Soil Conditions
• Free flowing sand• Cobble conditions• Large rock formations• Excessive ground water
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SWALLOWS LARGE OBSTRUCTIONS
• Rock swallowed during ram• Spoil removed post ram
54” Casing
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CULVERT SWALLOWING
An oversized casing is rammed over existing culvert. After installation is complete, old culvert and spoil is removed. Steel casing can serve as the drainage culvert or as a carrier pipe for another pipe inserted within.
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TELESCOPING METHODFOR LONGER DISTANCES
An oversized pipe is rammed over the existing culvert until production ceases and is cleaned out. Further progress is made with smaller casings installed within the oversized pipe in the same manner.
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METHOD IMPLEMENTATIONTrenchless Culvert Replacement Under Railways with the Pipe Ramming Method
RAM SITE LAYOUT
Note: Follow local regulations for sloping or shoring of pit.
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SITE PREP: CASING PLACEMENTC
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Rail system I-beam Pipe Mule™ Leveling System
STEEL CASING PREPC
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GLUBRICATION
External Shoe
Steel Casing
Internal Shoe
SOIL SHOE
Supplies lubricating fluid to OD and ID of casing during installation.
Reinforces lead casing and provides an annulus for lubrication.
COLLETS AND RAMMERC
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G Install Pushing Collets/Collars Install Rammer
The rammer is locked into the collets when the tool is started.
Collets and collars help to distribute the ramming force to the face of the pipe.The collets also lock the rammer into place.
SPOIL REMOVALC
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G Spoil removal for >30” and/or large spoil/culverts
Spoil removal <30” Casing
Air and/or water pressure. Seal kit for air pressure removal.
Manual excavation, HDD culvert cleaning tools, jet washing, auger boring wherever applicable.
Seal kit
PIPE RAMMING CASE STUDIESHIGHWAY & RAILROAD CULVERT INSTALLATION & REPLACEMENT WITH PIPE RAMMING
New Installations – Rockville, MN
• Project–2 – drainage culverts under railroad
• Pipe sizes–1-60” Casing–1-32” Casing
• Equipment–24” Rammer
• Ram distance–1 @ 90’–1@ 195’
• Free flowing sand• Holding grade
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New Installations – Grand Island, NEC
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G• Project
–1 – drainage culvert under railroad
• Pipe sizes–1-24” Casing
• Equipment–24” Rammer
• Ram distance–1 @ 250’
• Free flowing sand with loose coal dust and other materials
• Installed with 2% grade
New Installation - Coeur d'Alene, IDC
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G• Project
–2 – drainage culverts under RR and Highway
• Pipe sizes–2 - 48” casings
• Equipment–23” Rammer
• Ram distance–1 @ 190’–1@ 195’
New Installations– Maricopa County, AZC
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G• New culvert installation under rail
bed.• 84” steel casing• 24” HammerHead Pipe Rammer
TELESCOPING METHOD – ALASKAC
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G• Replacement of 84” dia. culvert
drain with telescoping method• 96” steel casing, 164 feet. • 24” HammerHead Pipe Rammer
Collapsed 7’ casing, 164 feet long
TELESCOPING METHOD – ALASKAC
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G• Replacement of 84” dia. culvert
drain with telescoping method• 96” steel casing, 164 feet. • 24” HammerHead Pipe Rammer
First section of pipe installed.
TELESCOPING METHOD – ALASKAC
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G• Replacement of 84” dia. culvert
drain with telescoping method• 96” steel casing, 164 feet. • 24” HammerHead Pipe Rammer
Swallowing and removing sections.
TELESCOPING METHOD – ALASKAC
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G• Replacement of 84” dia. culvert
drain with telescoping method• 96” steel casing, 164 feet. • 24” HammerHead Pipe Rammer
Telescoping 60 feet down sized sections.
TELESCOPING METHOD – ALASKAC
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G• Replacement of 84” dia. culvert
drain with telescoping method• 96” steel casing, 164 feet. • 24” HammerHead Pipe Rammer
Trenchless telescoped pipe.
New Installation - Dalton Hwy, AK
• Drainage culvert• Glacial til/new road bed• Service hwy between Prudhoe
Bay oil reserves & Fairbanks
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New Installation - Dalton Hwy, AKC
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G• Project
–1 – drainage culvert under service highway
• Pipe sizes–1 - 36” casing
• Equipment–24” Rammer
• Ram distance–1 @ 160’
New Installation - Dalton Hwy, AK
• Project–1 – drainage culvert under service
highway
• Pipe sizes–1 - 36” casing
• Equipment–24” Rammer
• Ram distance–1 @ 160’C
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THANK YOU
E: [email protected]: 800.331.6653 | INT: +1.262.567.8833 | F: 262.567.5068W: www.hammerheadtrenchless.com
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