concrete pipe. here to stay....concrete pipe is strong, durable and easy to install — but that’s...
TRANSCRIPT
CONCRETE PIPE. HERE TO STAY.
For long-term structural integrity
and value, rigid concrete pipe
sets the standard
DISCOVER THE CONCRETE PIPE ADVANTAGE
SPECIFY THE RIGHT PIPE FOR YOUR PROJECTAll pipe systems are not the same. Therearesignificant
differences, including pipe material, installation procedures and
durability,tonameonlyafew.Everypipematerial—precast
concrete, corrugated steel, high-density polyethylene, ductile
ironandPVC—performsdifferentlyonthejob—andeach
hasuniquepropertiesthatitpaystounderstand.Choosethe
wrongpipeandyoucouldjeopardizetheentireproject.
AMERICAN CONCRETE PRESSURE PIPE ASSOCIATION | AMERICAN CONCRETE PIPE ASSOCIATION
www.acppa.org | www.concrete-pipe.org
Rigid Concrete Pipe Outperforms All OthersNewpipematerialsmaycomeandgo…butnotconcrete.Precastconcretepipeand concrete pressure pipe have a long history — nearly 100 years — of proven performance.Nootherpipematerialcomescloseintermsofreliabilityanddurability,sodon’tbemisledbyclaimsaboutsupposedlysuperioralternatives.
Understand the Difference between Flexible and Rigid PipeOnebasicdifferencebetweenflexibleandrigidpipeisthelengthandweightofavailablepipesegments.However,themoreimportantdifferenceishoweachmaterialgainsitsstrengthandstability.Flexiblepipeisheavilydependentuponbeddingmaterialandconstructionprocedures,whichrequirestrictadherencetoinstallationspecifications.What’smore,overtime,moderatechangesinthesoilenvelopewillcompromisethestructuralintegrityofthepipe.
Incontrast,thestrengthandstabilityofrigidconcretepipeareengineeredandmanufactureddirectlyintotheproduct.Itsshort-andlong-termperformancedependsfarlessonbeddingmaterialandconstructionprocedures,makingitmuchmorecontractor-friendly.Moderatechangesinthesoilenvelopehavelittle to no effect on the structural integrity of the pipe; and since concrete pipe isheavierthanflexiblepipe,itisalsolesssusceptibletoflotation.
Concretepipeisstrong,durableandeasytoinstall—butthat’sonlythebeginningofitsadvantages.Justasimportantly,overthetotallife-cycleofaproject,itisbyfarthemostaffordablealternative.Flexiblepipemayseemcheaperatfirst,butwhenyouconsiderthecostofinstallationandadditionalmaintenanceitwilllikelyrequire,concretealmostalwaysemergesasthe most cost-effective choice.
Choose Concrete: Reliable, Durable, Cost-Effective Themoreyouknowaboutprecastconcretepipeandconcretepressure pipe,themoreyourealizetheyaretheobviouschoiceformostsanitary sewers,stormdrains,culvertsandwaterdistributionsystems.Foryour nextproject,specifytheperformancechampion:reliable,durableand cost-effective concrete pipe.
3900 University Drive
Suite 110
Fairfax, VA 22030-2513
T 703.273.7227
F 703.273.7230
www.acppa.org
FAILURE T YPE MOST COMMON CAUSES IMPACTS & RESULTS
DEFLECTION — Vertical/horizontal change in pipe diameter
• Impropercompactionofbeddingmaterial• Unexpectedloadonpipe• Trenchwidthtoonarrow
• Unexpectedstressesinpipewall• Lossofhydraulicefficiency• Unevensettlementatsoilsurface/pooling• Reductioninflowcapacity
JOINT SEPARATION — Detachment or misalignment of pipe sections
• Shiftingoflightweightpipeduringbackfilling• Shiftingsoils• Differentialsettlement• Thermalcontraction&expansionofHDPEpipe
• Unexpectedstressesinpipewall• Migrationofbeddingmaterial• Lossofpipesupport• Unevensettlementatsoilsurface/pooling
CORRUGATION GROWTH—Longitudinalelongationofinternalpipewall
• Soilpressureonpipecorrugations• Thinpipewall
• Lossofhydraulicefficiency• Reductioninflowcapacity
CRACKS, RIPS & TEARS—Fissuresinpipewall • Poormanufacturing• Poorresinquality• Improperinstallation
• Weakenedpipe• Lossofhydraulicefficiency• Reductioninflowcapacity
INFILTRATION & EXFILTRATION—Movementof fluid or solids into/out of pipe system
• Improperlysealedjoint,serviceconnectionorcrackedpipe
• Differentialdeflectionofpipeatjoint
• Migrationofbeddingmaterial• Lossofpipesupport
BUCKLING & CRACKING—Bends,warpsorbulgesinpipewall
• Inabilityofpipetocarrydesignload• Impropercompactionofbeddingmaterial• Poorresinquality• Excessiveloadonpipe
• UnexpectedstressesinHDPEpipewall• Lossofhydraulicefficiency• Migrationofbeddingmaterial• Reductioninflowcapacity• Lossofpipesupport
CORROSION—Lossofpipematerialdue to oxidation
• Prolongedexposureofsteelpipeto water&oxygen
• Reductioninpipewallthicknessinwaterwayareas
• Lossofpipestrength
DELAMINATION — Separation of interior liner fromexternalcorrugatedpipewall
• Poormanufacturing• Poorresinquality• Excessiveloadonpipe• Inabilityofpipetocarrydesignload
• Unexpectedstressesinpipewall• Lossofhydraulicefficiency• Reductioninflowcapacity• Increasedcorrosionformetallicpipe
Why Flexible Pipe Systems Fail … And What Happens When They Do
Flexiblepipesystemshaveatendencytofailinavarietyofways,eachwithitsowncharacteristiccausesandresults.Ineverycase,theseproblemscouldbeavoidedbyselectingrigidconcretepipesystemsinstead.
Tolearnmoreabouttheadvantagesofprecastconcretepipeandconcretepressurepipe,contactthestaffatACPPAorACPA.Youcanalsovisit www.acppa.org and www.concrete-pipe.orgtodownloaddesignsoftware,reference manuals and other technical information.
DISCOVER THE CONCRETE PIPE ADVANTAGE
AmericanConcretePipeAssociation
1303W.WalnutHillLane,Suite305
Irving,TX75038-2965
T 972.506.7216
F 972.506.7682
www.concrete-pipe.org