FACTS ABOUT THE U.S RAIL SYSTEMPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT • 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 PROBLEMSPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT • 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
CULVERT INSTALLATION AND REPLACEMENTPIPE RAMMING WASHOUT
WASHOUTPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT • 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.
CULVERT INSTALLATION AND REPLACEMENTPIPE RAMMING PROBLEMS AREN’T LIMITED TO RAIL
What is Pipe Ramming?PIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT A pneumatic hammer installs an open ended steel casing that is cleaned out during and after completion of pipe installation.
PIPE RAMMING APPLICATIONSPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT Steel casing installation for: • Water • Sewer • Gas • Drainage culverts
AdvantagesPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT • 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
Preferred for Adverse Soil ConditionsPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT • Free flowing sand • Cobble conditions • Large rock formations • Excessive ground water
SWALLOWS LARGE OBSTRUCTIONSPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT • Rock swallowed during ram • Spoil removed post ram 54” Casing
CULVERT SWALLOWINGPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT 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.
TELESCOPING METHODPIPE RAMMING FOR LONGER DISTANCESCULVERT INSTALLATION AND REPLACEMENT 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.
METHOD IMPLEMENTATIONTrenchless Culvert Replacement Under Railways with the Pipe Ramming Method
RAM SITE LAYOUTPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT Note: Follow local regulations for sloping or shoring of pit.
SITE PREP: CASING PLACEMENTPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT Rail system I-beam Pipe Mule™ Leveling System
STEEL CASING PREPPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT SOIL SHOE LUBRICATION Steel Casing Internal Shoe External Shoe Reinforces lead casing and provides an Supplies lubricating fluid to OD and ID of annulus for lubrication. casing during installation.
COLLETS AND RAMMERPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT Install Pushing Collets/Collars Install Rammer Collets and collars help to distribute the The rammer is locked into the collets when ramming force to the face of the pipe. the tool is started. The collets also lock the rammer into place.
SPOIL REMOVALPIPE RAMMINGCULVERT INSTALLATION AND REPLACEMENT Spoil removal for >30” and/or Spoil removal <30” Casing large spoil/culverts Seal kit Manual excavation, HDD culvert cleaning Air and/or water pressure. Seal kit for air tools, jet washing, auger boring wherever pressure removal. applicable.
PIPE RAMMING CASE STUDIESHIGHWAY & RAILROAD CULVERT INSTALLATION & REPLACEMENT WITH PIPE RAMMING