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8TuesdayApril82014cascadegraphicsWemayhavechangedourlookbutwestillofferallthequalityproductsandservicesyouareusedtoplusmore.NewmeasurescounterthawingNorthernpermafrostByMEAGANWOHLBERGTheimpactsofperma-frostdegradationandclimatechangeoninfrastructureintheNortharebeingcounteredbyasetofnewstandardsdesignedtohelppreservethelongevityofbuildingsthroughbetterconstructionandadaptationpractices.ThestandardscurrentlybeingdevelopedbytheCSAGrouparepartofajointinitiativebytheStandardsCouncilofCanadaandAb-originalAffairsandNorth-ernDevelopmentCanadatoaddresstheeffectsofclimatechangeonnewinfrastructureaswellasretrotsmainte-nanceandrepairstoexistinginfrastructureintheNorth.Since2012fourstan-dardshavebeendevelopedmeanttodealwiththevul-nerabilitiescreatedbyper-mafrostdegradationalongwithchangesintemperaturesandprecipitationwhichhaveledtoheaviersnowfallandsubsequentlygreaterloadsonstructures.Theresalotofinforma-tionouttherebuttheresnotonedocumentyoucanrefertoforeachoneofthesedif-ferentsubjectmatterssaidMarkBraiterseniorprojectmanagerwiththeCSAGroup.Theresalotofinforma-tiononpermafrosttheresactuallylessinformationonthermosyphonsandforsnowloadstheresevenlessinformationsurprisinglyespeciallyforwhatshap-peningupintheNorth.Sothereisalotofinformationbutthiswillbethersttimewhereyoucangotoastandalonedocumentandgetev-erythingthatyouneedonthatsubject.Theneweststandardwhichcameoutlastmonthandisundergoingpublicre-viewprovidesbestpracticesthatcomplementexistingbuildingcodestoassistindeterminingoptionsforcon-servingpermafrostremedi-atingimpactedbuildingsandassessingandmonitoringthestateofpermafrostbeneathbuildings.Thestandardidentiesnu-merousmitigationtechniquestomaintainpermafrostandremediatepermafrostdegra-dationfocusingonshadingdrainageandgradinggroundcoverandsnowmanagementandprovidessolutionsforbuildingfoundationsfromimprovingventilationorin-sulationusingmechanizedrefrigerationthermosyphontechnologyortotalfounda-tionreplacement.OtherstandardsfacilitatetheuseofthermosyphonsforbuildingsinpermafrostregionsmanagingchangingsnowloadrisksintheNorthandcommunitydrainagesystemplanningdesignandmaintenanceinCanadasNortherncommunities.ThefocusofthestandardsarechosenbyanadvisorycommitteecomposedofrepresentativesfromeachNorthernterritoryandeachstandardisdevelopedbyaround10subjectmatterexpertsinseparatework-inggroups.Thenewstandardsguide-linesandbuildingcodemod-elswillbeusedtodriveprac-ticalresponsesintheNorthfollowingtheirpublication.Thoughthedisseminationoftheinformationhasyettobecoordinatedeachjurisdic-tionisawaretheprojectisnearingcompletion.Therststandardonther-mosyphonsissettobepub-lishedattheendofAugustfollowedbytheotherthreebyMarch2015atthelatest.Workisalsobeginningonafthstandardidentiedbythetechnicalcommit-teeinYellowknifeonsitecharacterization.Thisstandardwilllookatbeforeyoubuildsome-thingupNorthyouneedtobeveryawareofthelandyourebuildingonintermsofwhethertherespermafrostornotandthecompositionofthesoilBraiterexplained.OncethestandardsarepublishedtheywillbeavailablefreeofchargeontheCSAwebsite.WiththeamountofpositivefeedbackreceivedfromgovernmentbuildingmanufacturersandAboriginalcommunitiesthusfarBraiterisexpectingthestandardswillbewellusedratherthansitonashelfandhopefullyllagapinbuild-ingstandardswhichtendtofocusonthesouth.ThereisquiteaneedforthistypeofworkupNorthhesaid.Thestandardsareavail-ableforviewingandpubliccommentonlineathttppublicreview.csa.caEnvironmentPermafrostBeforeyoubuildsomethingupNorthyouneedtobeveryawareofthelandyourebuildingonintermsofwhethertherespermafrostornotandthecompositionofthesoil.MarkBraiterCSAGroupRadiatorswithchillersonleftareinstalledaspartoftheatloopthermosyphonfoundationduringconstructionoftheBeaufortDeltaHospitalinInuvik.ThehospitalisoneofseveralgovernmentbuildingsinInuvikfeaturingthermosyphontechnologywhichaidsinpreventingpermafrostdegradationandthesubsequentdamagetoinfrastructure.PhotoI.HolubecConsultingInc.