greenleaf manual

Urban tree design guideEdition 7

GreenleafUrban tree and landscape products

UniclassL8144

(90.4)

CI/SfB

W

Sales and service: 01424 717797Technical assistance: 01424 433233Sales Fax line: 01424 533003Email: [email protected]: greenleaftrees.co.uk

Design Guide Trees in the urban environment (Edition 7)

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1 l Overview Companyprofile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 .01 Sustainability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .03 ForestvCity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .05 Howtousethisdesignguide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 .07 Thebenefitsofurbantrees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .08 Treesandclimatechange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .11 Identifyingopportunitiesforurbantreeplanting . . . . . . . . . . . . . . . . . . . . . 1 .12 Theprocessofsuccessfultreepitdesign . . . . . . . . . . . . . . . . . . . . . . . . . 1 .14 Pitfallsandchallenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .16

2 l Products Arborsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .01 Rootmanagementproducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .02 Treepitirrigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 .13 Soilstructuresystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .23 Guyingandties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .33 Treegrillesandguards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 .41 ArboresinandPrecastArboresin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 .52 Arborflowtreesandsustainableurbandrainagesystems . . . . . . . . . . . 2 .57

3 l Projects Casehistoriesandprofiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 .01

4 l Installation Treeproductpackages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 .01

5 l Information and support Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .01 Specificationsupportservice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .03 ArborsystemCDinstructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .05 NBSPlus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .07 Arborsystemapprovedinstallers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .09 Treesintheurbanenvironment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 .13 Streetsandsquares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 .14 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 .19 Frequentlyaskedquestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .21 Environmentalpolicy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .26 Howtoorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 .27

6 l Data sheets Technicalinformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 .01

7 l Index



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Com

panyprofile

1.01

Companyprofile

Foundedin1992,Greenleafwassetuptoresearchandprovidesolutionsforassistingtreesintheirbattletoestablishinurbanspaces .

Withthegoalofdrasticallyimprovingurbanplantingsuccessandincreasingleafcanopyinurbanareas,Greenleaftirelesslyanalysedthechallenges,thecausesoffailureandprematuremortalityenduredbytrees .Wethenexaminedthenegativeimpactpoorplantingcanhaveonurbaninfrastructures .Havingestablishedthekeyissuesforbothofthese,wethensystematicallyresearchedthereasonsforthoseissuesanddesignedpracticalproducts,solutionsandsystemsfortrees .

Thelasttwodecadeshaveseenrelentlessproductdevelopmentandadvancesintreesystemtechnologies .TheresultisseeninGreenleafsenviabletrackrecordofsuccessfulschemesandthedevelopmentofstateoftheartsustainabletreepitdesigns .Localauthorities,landscapearchitects,engineersandotherrelatedprofessionalsincreasinglyturntoGreenleafforguidanceandbestpracticeadviceintreeplantingimplementation .

AstheUKsmarketleaderinspecialisttreepitproducts,wearepleasedtobeinapositiontopresentyouwiththedefinitiveurbantreedesignmanualaresultof18yearsoffrontlineexperienceinthefield,exhaustiveresearch,productdevelopmentandfieldtrials .

Coupledwiththis,weofferyoutosampleoursupportserviceunrivalledinthetreeplantingworldletushelpyouachieveyourvision .

BasedinEastSussexbutwithofficesanddistributionpointsUKwide,Greenleafhasgrowneveryyearsinceitsinception .Ourprogrammeofcontinuousproductdevelopmentensuresthatspecifiersandclientscanrestassuredthatthesystemsweofferforurbanplantingschemesrepresentthebestinthesector .



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Sustainability

Ourcommitmenttosustainabilityisevidencedbytheconsistentuseofrecycledmaterialswhereverpossibleinourproducts .Greenleafscontributiontotreeplantingprojectsworldwideisvirtuallyincalculableandgivesusanenviablecarbonpositiveposition .Furthermore,localsourcingpoliciesmeanthat90%ofourspecialisttreeproductsaremanufacturedwithintheUK .

We are here to support you right from the outset of your scheme. Our service covers every stage, from initial feasibility studies through to planting.

Weliveintimeswhentheinternationaldebateonclimatechangehasmovedurbantreeplantingfurtherupthepoliticalagenda .LocalauthoritiesintheUKandotherlargecorporateorganisationsarebeingheldaccountableforclimatemitigationstrategiesthroughtheNI188reportingsystem .Treestrategiescanplayavitalroleinmeetingthesegoals .

Sustainability

1.03



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ForestvCity

1.05

ForestvCityConsider the contrast

Planting a tree in the urban environment involves a huge change for that tree in terms of the habitat that it will have to adapt to, compared with that which it would normally enjoy in rural conditions.

Treesareforestryplants .Assoonasweforgetthissimplefactwearelikelytomakemistakeswhenplantingthemintownandcityenvironments .

Thetreesshownoppositeareinabeautifulwoodedsettingandhavenearperfectconditions .Shelteredmicroclimate,richfertilesoilwithanabundanceofnutrientsandhumus,uncompactedleafmould,richrootingvolumewithplentyofmoistureandporespace .

Nowspareathoughtforthetreeinthetown .Aharshpavedsurroundincreasingmicroclimatetemperaturesandreflectedglare,exposuretowind,de-icingsaltandgratuitousvandalism .Belowgroundanequallyhostileenvironmentofcompactedsoils,lackofquality

rootablevolume,competitionforspacewithmultipleutilitiesandifthetreedoesmanagetospreaditsrootsystemsomeonewillmutilateit,throughtrenchingorpavementreinstatement .

Withthesefactorsinmind,wecanbegintheprocessofsuccessfullyintegratingtreesinbuiltupareas .Byprotectingthemaboveandbelowground,managingandprovidingfordelicaterootsystems,wecanasfaraspossiblerecreateoptimumconditionsforourtreestoestablish .

Wecannotrecreateentirelytheconditionstreesenjoyinwoodlandsbutwecangoahugedistanceinimprovingtheirchancesofthrivinginchallengingconditionsbytreeliteratedesign .



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HowtousethisdesignguideThismanualisdesignedtologicallyguideyouthroughtheprocessofsuccessfullyplantingurbantrees .Theformatwillassistyouwhetheryouareanexperiencedlandscapedesignerorsomeonefacinganewtaskchallenge .

How

tousethisdesignguide

1.07

n The benefits of urban treesn Trees and climate changen Identifying opportunities for urban tree planting n The process of successful tree pit designn Pitfalls and challenges

2.0 Product finder Includesimportantinformationsuchas:typicalinstallationspecification,productspecifications,compatibleproducts,productcodesandcrossreferencestoourtreepitdetails .n Arborsystemn Rootmanagementproductsn Treepitirrigationandaeration(ventilation)n Soilstructuresystemsn Guyingandtiesn Arborguyn Treetiesn Treegrillesandguardsn Treegrilleframesn Arboresinn ArborflowSUDStreepits

3.0 Projects Aselectionofcasehistoriesandprofilesthatcanhelpyouplanforyournextproject .

4.0 Tree Product packages Tosimplifythespecificationandinstallationofourrangeofproducts,weprovideGRtreepitdrawings .TheseshowhowproductsshouldbedrawninrelationtodifferentlocationscenariosandcanbesuppliedindifferentCADformats .Contractorscaneasilyorderutilisingasingleproductcode .

5.0 Information and support n Researchn Specificationsupportservicen ArborsystemCDinstructionsn NBSPlusn Arborsystemapprovedinstallersn Treesintheurbanenvironmentn Streetsandsquaressuitabletreespeciesn Maintenancen Frequentlyaskedquestionsn Environmentalpolicyn Howtoorder

6.0 Data Sheets Technicalinformationforourproducts

7.0 Index

1.08

Thebenefitsofurbantrees

n Aestheticsfewthingscancomparewiththevisualimpactandseasonalinterestthatatreebrings.

n Forevery10%increaseinacitytreecanopy,ozoneisreducedbybetween3-7%.

n Healthtreeshaveapositiveimpactontheincidenceofskincancer,asthma,hypertensionandstressrelatedillnessbyfilteringoutpollutedair,reducingsmogformation,providingshadefromsolarradiationandgivinganattractive,calmingsettingforrecreation.

n OnestudybyNaturalEnglandcalculatedthatevery1spentontreeplanting,wouldyield7savings,whichiftakennationallywouldamounttoannualpotentialsavingsof2.1bn.

n Carbonreductiontreesareproventoabsorbcarbon.Havingremoveditfromtheairitisstoredascelluloseintheirtrunks,leavesandbranches(aprocess

knownassequestration).Plantingtreesremainsoneofthecheapest,mostcosteffectivemeansofdrawingexcessCO2fromtheatmosphere.

n Asinglematuretreecanabsorbcarbondioxideatarateof21.6kg/yearandreleaseenoughoxygenbackintotheatmospheretosupport2humanbeings.

n Stormwatermanagementandbufferingthecrownofalargetreeisafreestandinganti-floodreservoir.Onehundredmaturetreescaptureabout1,137,500litresofrainwaterperyear,allowingsometoevaporate,drawingupmorethroughtherootsandslowlyallowingtheresttosoakintotheground.

n Forevery5%oftreecoverinacommunity,stormwaterrunoffisreducedby2%.

n Biodiversitythebenefitsofprovidingnaturalhabitatsforbirds,squirrelsandotherfaunaareincalculable.

Sadly,formanyyearsnow,thetreecanopyinourtownsandcitieshasbeendiminishing .Largematuretreeswhichreachtheendoftheirlivesarefrequentlyfelledandreplacedwithsmallerspeciesornotatall .Replantedtreesstruggletoestablishduetothedemandsofengineeredsurfacesaroundthem .

However,astimehasgoneon,moreandmoreresearchhasconfirmedthevalueandbenefitofmaturetreesinurbanenvironments .CharitiesandorganisationssuchasTreesforCities,activelycampaigninsupportoftreesinurbanareas .

Here we summarise some of the principle benefits that local authorities, developers, urban planners, architects and specifiers need to be aware of:



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Thebenefitsofurbantrees

1.09

n Improvestheliveabilityofurbanareas.

n Treescanincreaserealestatevalues.Independentstudiesshowaconsistentincreaseinpropertyvaluesintreelinedstreetsbetween5-15%.

n Crimereductionresearchershavediscoveredreductionsinbothviolentandpettycrime,includingdomesticviolencethroughthetherapeutic,calminginfluenceofmaturetreeplanting.

n PollutantremovalSulphurDioxide,NitrogenOxidesandparticulates,CarbonMonoxide,Cadmium,NickelandLeadareallsubstancesthatatreewillworktoremoveandstore24/7365daysoftheyear.

n Researchhasshowna60%reductioninparticulatesfromexhaustfumesetcintreelinedstreets.

n Erosionreductionreducingtopsoilerosionthroughrunoffandpreventingharmfulchemicalsreachingwatercourses.

n Coolingeffectreducingtemperaturesbybothshadeandtranspiringwater.Thishelpsreduceairconditioningbillsandenergyuse.Onematuretreecanproducethesamecoolingeffectas10roomsizedairconditioners.

n Thissamecoolingeffectbecomesaneffectivetoolinreducingurbanheatislandsandhotspotsincities.

n Treescansaveupto10%oflocalenergyconsumptionthroughtheirmoderationoflocalclimate.

n Noisereductiontreesformaneffectivesoundabsorbingbarrier.

n Windspeedreductionbuildingsincreasewindspeedaswindisforcedtotravelfurtheraroundthem.Treessignificantlyreducewindspeeduptoadistanceof10timestheirheight.



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TreesandclimatechangeIf local authorities are to meet the stringent carbon reduction targets laid on them by 2020 and 2050, then trees need to be planted now! Furthermore these trees need to be planted in such a way that they stand a good chance of establishing well and reaching maturity.

How we can help.

n Byassistingyouinevaluatingtreepitdesigns

n Providingguidanceonbestpracticeintreepitlayoutandplantingmethods

n Givingyouqualityadvice

n Providingdetailedtreepitspecificationsandcosting

n Supplyingpractical,costeffectiveproducts,toassistwithtreeestablishment

n Sitesupportwhenplanting

n Supplyinglistsofsuitablyqualifiedcontractorstoexecutethework

n Contactwww.greenleaftrees.co.ukOrtelephone01424717797

Bysigninguptointernationalclimatereductiontargets,centralgovernmenthasissuedachallengetoeveryoneinvolvedinurbanspacedesign .Whilstwecannotrealisticallyclaimthatplantingtreesintownswillsignificantlyaffectglobalclimate,whatwedoknowisthattheyhaveamajorroletoplayincityclimate mitigation and adaptation strategies.

Treescan,byprovidingshadeandcoolingthroughtranspirationandevaporationprocesses,reducetemperaturesaroundthem .Clusters of well established trees probably represent the most effective tool available to urban designers in combating urban heat islands and heat sinks in cities. (Thesepocketsofheatbuildupinurbanareaswithsolarenergyandglarereflectingoffengineeredhardsurfaces .Thesesamesurfacesstoretheheatandreleaseitovernight,scarcelyhavingtimetocoolbeforethenextsunrise .)

Asmentionedearlier,onewellestablishedtreecanhavetheeffectof10roomsizedairconditionersbutofcoursefromatotallysustainable,zeroenergysource!

ThetargetssetforCO2reductionareextremelychallengingby2020,areductionof1 .2mtonnesofCO2perannumislookedforintheUK,andby2050areductiontargetof80%of2009levels .Iftreesaretoplayapartinimplementingthisreduction,alotneedstohappenquickly .

Treesandclimatechange

1.11

1.12

IdentifyingopportunitiesforurbantreeplantingClearly, we cannot just simply drop trees in anywhere. To have a chance of success, tree species and location are the first priority in our goal of establishing trees in towns. Planting potentially large trees in wrong locations is counterproductive and will simply turn people against trees. However, equally often we see tree planting sites which could support larger species, populated with smaller whitebeam or prunus species which really represent a lost opportunity. Big trees bring big benefits but they must be located wisely.

Right tree, right placeTreesneedspace,theyneedsoilvolumethereisadirectcorrelationbetweenwhatweprovidethetreewithtogrowbelowgroundandwiththeresultwewillseeaboveground .

Architectsandengineerswouldneverseriouslyconsiderbuildingastructurewithinadequatefoundationsandyetmanywillroutinelyplanttreesontheirschemesintinytreepitsjustafractionofwhattheyreallyneedtodowell .

Wherepossible,planttreesingroupswithsharedsoilspace .Treescanthenspreadouthappilybetweenthemselvesandbenefitfromadditionalsoilvolume .Onecommonmethodistheuseofcontinuoustrenchplantingandthisisaverygoodwayofprovidingadequatevolume .



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Consider planting trees in the following locations:

n Buildoutsinroadschemesoneofthemostdemandingplacestoplantatreebutoneinwhichsuccessfulestablishedtreeshaveahugeimpact.Thesecanbeusedaspartoftrafficcalmingprojects(thusfulfillingtworolesinone),orsimplyparkingdelineation.

n Vergesthemostcommonareaforurbantreelocation.

n Pavementsdemandingonthetreebutcanbeachievedsuccessfullywithcarefulattentiontotreepitdesign.

n Carparksagainapotentiallyhostileplacetoplantatreebutgreatlybeneficialinprovidingcoolshadeforvehiclesinbrightweather.

n Plazasthesearewheretreescanreallyhavehugeaestheticandbeneficialimpactthereisnothingelsethatcanbeincorporatedinthesekindofspacesthatwillconferthesamedegreeofbenefit.

n ParklandFewthingscancompetewithestablishedtreesinaparksettingindeedtryimaginingaparkwithouttrees.

n Newforestpocketscreatingtreeclustersinurbanspacesandpocketparksisanexcellentstrategytoincreasetreecanopyforclimatemitigationandadaptation.

n SUDSConsidertheuseoftreesaspartofastormwaterretentionstrategysudstreepitdesignsarenowworkable.

Identifyingopportunitiesforurbantreeplanting

1.13

Largecarparkswithouttrees:urbanhotspotsandmissedopportunities Successfultreeplanting,withnoreductioninparkingspace

1.14

Theprocessofsuccessfultreepitdesign

n AvailablerootspaceSoilvolumerequirementsfortreescanbeestimatedusingseveralmethods.Asstatedearlier,inanaturalenvironmentarootsystemcanextendtwotothreetimestheradiusofthetreecanopy.Probablythesimplestwayofcalculatingaminimumrequiredsoilvolumeistotakethe

projectedcanopyareaofthematuretree,multipliedbyadepthof0.6m.Theshapeofthisareacanbeconfiguredtosuittheparticularsite.Othermethodsarebasedonmaturetrunkgirthandarepossiblymoreaccurateastheyprovidefordifferentfoliageshapes.Theoldmethodofprovidinganareathesizeofthepavementopeningisclearlyinsufficient,andcommitsthetreetoanuntimelydeath,oralifetimeofcostlyrepairs.

n EngineeringrequirementsWithmanytreesbeingplantedimmediatelyadjacenttohighwaysandengineeredstructures,itisvitalthatrootvolumebeneathoraroundsuchisconsidered.Engineeringrequirementsforhardsurfacesaredirectlyopposedtohorticulturalrequirements.Structuralsoilmodulesorsimilarmustbeconsideredearlyenoughinaprojecttobeincorporatedduringthecivilsorgroundworkstage.

Havingmadeadecisiononspeciesandlocation,thefollowingprocessshouldbeobservedwhendesigningtheexactprofileofthetreepitandancillaries:



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n Rootmanagementpavedsurroundsorutilitiesnearby?Ifso,rootmanagementshouldbespecifieddependingonwhatneedsprotectingandwhereitisinrelationtothetree.Forcontinuouspavedsurroundforexample,rootswillneedmanagingdownwardsbyatleast300mmtodesignoutpavingheave.Seeoursectiononrootmanagementforfurtherdetails.

n IrrigationlackofwaterandnutrientsarethebiggestsinglekillersofnewlyplantedtreesintheUK.Itisveryimportanttoincorporatethemeanstoirrigateefficiently,particularlyforthefirstthreeyears.

n Drainagewaterloggedtreepitscanbecomeanaerobicandthiswillkillthetreepleaseensurethatpotentialdrainageissueshavebeenaddressedearlyoninyourscheme.

n Aerationlesswidelyknownbutnonethelessimportant,soilsandrootsneedairtolive.Iftherootplateofthetreeiscoveredwithimperviouspaving,vitalgaseousexchangeintherootzonecannottakeplace.Appropriatetreepitdesignshouldincludeameansoffacilitatingairsupplybelowground.

n Supporthowwillyouensurethetreeissecurelylocated?Undergroundguyingiswidelyfavouredforurbanareasasitisunobtrusive.Stakingandtyingisanalternativebutthiswillrequiremaintenance.

n AbovegroundWhatsortofenvironmentwillyoubeplantingininsomelocationsabovegroundprotectionfromcarelessnessand/orgratuitousvandalismbecomescriticaltotreesurvival.Adecisionwillneedtobemadeonwhetherthereisaneedfortreegrilles,verticalguardsandotherprotectivemeasures.

Theprocessofsuccessfultreepitdesign

1.15

Havingconsideredandprovidedforalltheaboveitems,wearewellonthewaytoensuringthatourtreeplantingprogrammeisgoingtobeefficientandsuccessful .Theabovefactorscoverwellover90%ofthereasonsforurbantreefailure .Wenowneedtolookatthespecificproductsrequiredtohelpusdesignthesefeaturesintoourschemes .

1.16

PitfallsandchallengesEach of these photographs tell a story. Learning from both our own and others mistakes is imperative if we are to pursue the goal of increasing urban tree canopy cover.

Thisguardiskillingtheveryarticleitwassupposedtoprotect

Inappropriateproductselectioncanblighttheresult

Ahealthytree:Withtherightproductselectionurbantreescanthrive



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Pitfallsandchallenges

1.17

Insufficientrootingvolumeafteragoodstartthesetreesexhaustedavailablesoil

Makeshiftanduntidyahomeforratsandmice



Surfacerootheave

Poorplantingtechniquesharmtrees

Poordrainagecankill

I can improve the environment

Research has shown a 60% reduction in particulates from exhaust fumes in tree lined streets

2 l P

roducts

Find

ingsuccess

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2 l Products Finding success

Arborsystemn The definitive urban tree pit package . . . . . . . 2.01

Root managementn Root management products, overview . . . . . . 2.02

n Root management selector chart . . . . . . . . . . 2.03

n ReRoot 300Linear pavement protection . . . . . . . . . . . . . . 2.04

n ReRoot 600/1000Linear pavement protection . . . . . . . . . . . . . . 2.06

n ReRoot 2000Deep application root barrier . . . . . . . . . . . . . 2.08

n Root Director Modular root protection system . . . . . . . . . . . 2.10

Tree pit irrigationn Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.13

n Rootrain Metro Irrigation . . . . . . . . . . . . . . 2.14

n RootRain Urban Irrigation and aeration . . . 2.16

n Rootrain Civic Large capacity irrigation . . . 2.18

n RootRain Precinct & Arborvent For heavily trafficked areas . . . . . . . . . . . . . . . 2.20

Structural soils and soil modulesn What is soil structure . . . . . . . . . . . . . . . . . . . 2.23

n Soil structure systems . . . . . . . . . . . . . . . . . . 2.24

n RootCell Soil structure system . . . . . . . . . . 2.26

n StrataCell Soil structure system . . . . . . . . . 2.28

n Arborsoil Compactible root zone material . . 2.30

Guying and tiesn Support and protection . . . . . . . . . . . . . . . . . 2.33

n Arborguy Underground guying . . . . . . . . . . 2.34

n Tree ties: Securing large root balled trees . . . . 2.36

n Arbortie 600mm soft tree tie. . . . . . . . . . . . 2.37

n Naturetie Biodegradable tree tie . . . . . . . . . 2.38

n Tree Guard Tie for use with tree guard . . . . 2.39

Tree grilles and guardsn Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.41

n Fully integrated grille systems . . . . . . . . . . . . . 2.42

n Standard tree grille range: Adur, Avon, Clyde, Dart, Tay and Yare . . . . 2.44

n Design line tree grille range: Boulevard Ductile iron grilleCastle Heavy duty recessed grilleMedway Light grille for use for 600mm pavingArborAdvance Non-slip ventilated grille Bespoke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.46

n Vertical tree guards: Ullswater, Coniston, Derwent, Ennerdale, Thirlmere, Windermere, bespoke and weldedmesh guards . . . . . . . . . . . . . . . . 2.48

n Tree grille frames:Fully integrated grille systems . . . . . . . . . . . . . 2.50

n Arboresin Porous tree pit surface . . . . . . . . 2.52

n Precast Arboresin Porous tree pit surface . . . . . . . . . . . . . . . . . . 2.54

Sustainable urban drainage systemsn Arborflow trees and sustainable

urban drainage systems . . . . . . . . . . . . . . . . . 2.57



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ArborsystemThe definitive urban tree pit package

TheGreenleafArborsystembringstogetherthekeyelementsofsuccessfultreepitdesignandsimplifiesthedesignandinstallationprocessforspecifiersandinstallers .

ByusingourCADdiscorhardcopies,landscapeprofessionalscancombinerootmanagement,structuralsoilcomponents,aeration,irrigationandchooseanappropriateabovegroundsurfacegrilleandverticalguardinasinglepackage .

Sinceitsinceptionanddevelopmentoverrecentyears,theArborsystemintegratedtreepitproductpackagehasproveditselfinmanydemandinglocations .Formanylandscapespecifiers,Arborsystemhasbecomethesystemofchoiceforintegratingtreesintotheurbanenvironment .

By utilizing Arborsystem, landscape designers can:

n Ensureproductcompatibility

n Drasticallyreducetimespentonspecifying,quotingandordering

n Adaptasystemtosuitdifferinglocationandbudgetconstraints

n Demonstratetoclientsaprofessionallongtermapproachtotreeplanningandmanagementissues

n Benefitfromouronsitesupportserviceforpeaceofmind

Arborsystem

2.01

2.02

RootmanagementproductsOverview

Withtodaysclientsrequiringcompletelifecostinganddutyofcareobligations,itisnolongersufficienttoplantatreeinanurbanlocation,simplyhopingthattherootswillkeepoutoftrouble .Thisguidesetsoutcurrentbestpracticeintreerootmanagement .

Greenleafhasdevelopedarangeofspecialistrootmanagementproducts .Differentsituationsoftenrequireadifferentapproach .

Ratherthantakeaonesizefitsallattitudewehavedesignedourrootmanagementrangetogivethetreeasmuchgrowingadvantageaspossible .

Therefore,ifoneissimplywantingtoprotectpavedsurfacesfromrootheave,itisunnecessarilyrestrictiveonthetreetoinstallaverticalsheetbarrier1 .5mdeepallround .TheRoot Director productdivertsrootsdownwardstoalevelwheretheycansafelyestablishwithoutsurfacedamage .

So,whetherdesigningarootfreecorridorforutilities,protectingbuildingfoundationsordesigningtreesintoapedestrianisedarea,Greenleafhasacosteffectiverootmanagementsolution .

Fortechnicaladviceontheproductapplicationphone01424 433233.



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Rootm

anagementproducts

2.03

Root management selector chartItisintendedthatthediagrambelowwillbeofassistanceindeterminingwhichproductshouldbeusedinmostsituations.

Itisaguideonlyandshouldbereadinconjunctionwithourmaincatalogue.Ifnecessaryphoneourtechnicallineforhelpon01424433233.

Suitableproduct

Suitableproducts

Suitableproduct

Suitableproducts

Suitableproducts

Suitableproducts

What are you needing to protect from roots?

Suitableproduct

ReRoot 2000 RD640Root Director

RD1050Root Director

RD1400Root Director

ReRoot 600

ReRoot 1000

ReRoot 300

ReRoot 600

ReRoot 1000

ReRoot 600 ReRoot 1000

ReRoot 20001m deep+

ReRoot 2000Available in

1m,1.5m & 2m stock depths,deeper barriersto special order

Up to550mm

Suitableproduct

RD510Root Director

Up to400mm

Up to1250mm

What is the predicted girth (circumference)of the mature trunk?

How deep are yourservices/utilities?

Up to450mm

Up to800mm

Deeperthan

800mm

LinearSurround

Surroundor Linear

Depth of servicesdetermines barrier type

Pavements & undergroundservices/utilities

Undergroundservices/utilities

PavementsBuildingfoundations

High densityroot barrier

2.04

ReRoot300Linear pavement protection

Benefits

n Deeperrootsystemmeansgreaterdroughttoleranceandimprovedtreestability

n Deeperrootsystemisnotvulnerabletode-icingsalts,usedextensivelyonfootpathsandcyclepaths

n Protectionofpedestriankerbsfromrootheave

n Retrofittingaroundrecentlyplantedtrees

n Protectstreewhenpavementre-instatementworksarecarriedout

n Suppliedinrollformtoany10lin.mincrement

ReRoot 300linearribbedrootbarrierhasbeendesignedforapplicationswhereitisnotnecessarytodeflecttreerootsystemstoodeeply .Thishighdensityrootbarrierissuppliedin300mmdeeprolls .Thebarrierwilldeflectthegrowingrootsdownwardsufficientlytoprotectastandardpedestriankerblinefromsurfacerooting .

ReRoot 300, 600 & 1000areprotectedbypatent(Patentno .2311309)astheonlyrollformrootbarrierwithintegralrootdeflectingribs .



GreenleafGreenleaf

IllustratedistheReRoot 300productbeingusedinconjunctionwithRootCells .Thebarrierdivertsshallowlateralrootgrowthintothepreferredrootingzone

ReR

oot300

2.05

Typical Installation specification

InstallReRoot300ribbedrootbarriertoprotectallhardsurfacesfromtreerootdamage.Rootbarriershouldbeinstalledwiththeribsfacingthetree.Thetopedgeoftherootbarriershouldfinish10mmaboveanygrowingmediatreeside.Tojoinrollends,overlapby500mmandtapebothsideswithGreenleafrootbarrierjointingtape.

Compatible Arborsystem products

n Treepitirrigation.See2.13

n Soilstructuresystems.See2.23

n Rootballguyingandties.See2.33

n Treegrillesandguards.See2.41

Standard tree pit details

Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareinthetreeproductpackagessection.

Product specification and codes

Product Thickness Code

ReRoot 300 1 .0mm RER300A

ReRootJoint Tape(10mroll) - RERJTA

ReRoot 300 wasusedtoprotectpavedsurfacesanddirectrootsonthisprojectinSwindon

ReRoot 300canbeusedtoprotectcyclepathsthroughruralareasfromtreerootdamage

2.06

ReRoot600/1000Linear pavement protection

Benefits

n Easytoinstall,nospecialistequipmentneeded

n Availablein600mmand1000mmdepth


n Ribbedconstructionpreventsrootswirlanddirectsrootsdownwardandoutward

n Flexibledesignallowsthebarriertocurvearoundobstaclesbutisrigidenoughtoholditsformwhenbacklling

n ReRootjointingtapewillensurerootproofjointswhenjoiningrollends

ReRoot 600andReRoot 1000productsareribbedrootbarriersdesignedfortheprotectionofpavedsurfaces,shallowserviceductsandutilities .

Availableinrollformandintwodifferentdepths .Thenumbers600and1000denotethedepthinmm .

Thisversatilerootmanagementsystemcanbeusedtosurroundindividualorgroupsoftreesbecausetheribsareproventodivertlateralrootgrowthdownwards .

Typical installation specification

InstallReRoot600linearrootbarrierwithintegralrootdeectinggroundlockribsasfollows:Excavatenarrowtrenchtoadepthof600mm.Ensurethatthebaseofthetrenchisrmandlevel.Removeanysharp



GreenleafGreenleaf

Typicalproject,threeyearsafterplanting

ReR

oot600/1000

2.07




n Rootballguyingandties.See2.33





Product Thickness Code



ReRoot Joint Tape (10mroll) - RERJTA

ReRootcanbeusedtocontrolrootdevelopmentwithbothindividualandgroupsoftrees .Liningthepavementasshownmaximisesrootingvolumeforthetrees

Investmentatplantingstagewillpreventcostlyrootdamagetopavements

ReRoot 1000installedtoprotectundergroundservicesanddivertrootsbeneathpavementsurfaces

Manylocalauthoritiesnowstateintheirplanningpolicythattreesplantedinsoftareaswithin3mofapaved/hardsurface,thatwillbeadoptedbythecouncil,mustbelinedwitharootbarrier .Thisprotectsthepavementinthelongtermandthetreesrootsystemintheeventofpavementexcavation .

objectsfromcloseproximitytothetrenchwalls.Installrootbarrierwiththeribsfacingthetreeroots.

Backllthetreesidewithgoodqualitytopsoilandtherearsideofthebarriersimultaneouslywithsubsoilallowingforsurfacenishingkerbingetc.

Backllingshouldbeinlayers.Concreteispermissibleontherearsideofthebarrierifrequiredtosupporthardlandscapesurface.Careshouldbetakentoremoveanysharpobjectsfromthebackllmaterial.Thetopedgeoftherootbarriermustremain10mmabovethesurfacetreeside.TojoinrollendstapebothsideswithGreenleafReRootjointingtape.

ForReRoot1000,onlytheexcavationdepthdiffersfromtheabove.

2.08

ReRoot2000Deep application root barrier

Benefits

n Resistanttopuncturebysharpobjectsortearingasaresultofsoilmovement

n Durable,resistanttobiodegradationandphotodegradation

n Easytoinstall,nospecialistequipmentneeded

n Availableinstandard0.3m,0.6m,1.0m,1.5mand2.0mdepthrolls,upto6metredeeprollstospecialorder


n Availablein1.0mm(productcodeRER210),and2.0mmthickness(productcodeRER220)

n EffectiveinthecontrolofJapaneseKnotweedandotherinvasiveplants

n ReRoot2000fulfilsalltheArboriculturalAdvisoryandInformationServiceguidelinesforrootbarriers

n Manufacturedfrom100%recycledmaterial

ReRoot 2000wasspecifiedandinstalledatthisindustrialparkatSpeke,Liverpool .NotehowtreeshavebeenplantedparalleltoamajorgasmainwiththeapprovalofTransco .

ReRoot 2000 isahighstrengthrootbarrierfordeeperapplications .ThisproducthasbeenusedextensivelyonmanyprojectsaroundtheUK,particularlyinnewserviceinfrastructureprojects,businessparksandhousingdevelopments .

ReRoot 2000isrigidenoughtoholditsformwhenplacedintoatrench .Thisisabigadvantageasitwillnotbedraggeddownwardduringbackfilling .Marketleadingpunctureresistanceandstrength,meanthatthisistherootbarrierofchoiceforspecifiersandutilitycompaniesrequiringrootfreeservicecorridors .

ThehighpunctureresistanceofReRoot 2000allowseasiercompactionclosetothebarrierensuringanexcellentproduct/soilinterface .



GreenleafGreenleaf

ReR

oot2000

2.09


InstallReRoot2000(includingrelevantproductcode)linearrootbarrierasfollows:

Excavatenarrowtrenchbetweenthetreeandthestructuretobeprotected.Pleasenote:thepositioningofthetrenchwilldependontreespeciesandothersiteconditions.Pleaseconsultaqualifiedarboriculturist.

Thebarriershouldbepositionedinthetrenchagainstthesideofthetrenchnearestthetree.Anysharpobjectsshouldberemovedfromthetrenchwallsandthebackfillmaterial.

ReRoot2000rollendscanbejoinedbyoverlappingatleast500mmandsecuringbothsideswithGreenleafrootbarrierjointingtape.Forcriticalapplicationsthematerialcanbeseamwelded.

Ensurethatthetopofthebarrierfinishesatleast10mmabovefinishedsoillevelstreeside,toavoidsubsequentrootovergrowth.Thebarriercanbetrimmedusingasharpknife.Backfillthetrenchinlayers,compactingcarefully.

Itmaybedesirable,dependingonsiteconditions,toencapsulatethetopedgeofthebarrierinconcretehaunchingtoprotectthebarrierandtofinishtheinstallationtidily.


Product Thickness Depth Code

ReRoot 2000 1 .0mm 300mm RER210X0 .3A







ReRoot joint tape(10mroll) - - RERJTA

ReRoot 2000canbeusedtokeeptreerootsfromdamagingservicesandpavedareas

ReRoot 2000installedtoprotecthardsurfacesatGranton,Edinburgh

ReRoot 2000hasbeeninstalledpriortotopsoilinginthisinfrastructureproject

ReRoot 2000willholditsforminatrenchexcavation .Thismakesinstallationquickandeasy .Alsovisibleislanddraintoremovegroundwaterpressure

2.10

RootDirectorPreformed root protection system

Benefits

n Protectionforpavedsurrounds

n Encouragesdeeprootgrowth

n Improveddroughttolerance

n Greatlyenhancedtreestability

n Integralribbedconstructionwhichpreventsrootswirl

n Optionalirrigationfacility

n CompatiblewithGreenleafArborsystemproducts

n Simpletoinstall

n 100%recycledplastic

Designedfortheprotectionofpavementsandhardlandscapedareas,theribbedRoot Director systempreventsrootswirlanddivertsrootgrowthdownwardandoutwardthusavoidingtheunsightlyandhazardousrootdamagesocommonlyseeninurbanareas .

TheRoot Directorsrigid,one-piececonstructionmakesinstallationsimple .AsaproductwithintheArborsystemrange,itiscompatible

withtheRootRainirrigationsystem,RootCell loadbearingsoilstructureandourextensivetreegrilleandguardrange .

Root Directorsareofrobustconstructionandcanbeeasilyhandledonsite .



GreenleafGreenleaf

D

clear opening

A

C

B




n Rootballguying.See2.33


Root Directorsaretheidealrootmanagementsolutionforindividualtreeplantingschemes,andwereusedinboththeaboveprojects .



Root DirectorRD1400Aduringinstallation


Product A B C D Code

Root Director 510mm 595mm 310mm 425mm RD510A




RootD

irector

2.11


InstallRootDirectorpreformedrootbarriersystemwithintegralrootdeflectingribs.

ExcavateplantingpittoacceptRootDirector.Ensureadequatedrainagetopit.IfusinginconjunctionwithRootCells,theseshouldbeinstalledfirst.ThelowerflangeoftheRootDirectorshouldbelevelandonafirmevenbasetoavoidsettlement.EnsuretopedgeofRootDirectorislevelwithfinishedsurroundunlessinstallingwithatreegrille.Ifatreegrilleisbeingused,checkdepthofsupportframe.

Backfillinsideandoutsidesimultaneously,firmingin150mmlayers.TopsoilinsidetheRootDirectorshouldnotoverflowthetopflange.



GreenleafGreenleaf

Tree pit irrigation

2.13

Tree pit irrigationOverview

By far the biggest contributor to the high mortality rates suffered by urban trees is drought stress. Water is vital for the growth of trees. It is not only required for all the biochemical requirements for growth photosynthesis, respiration and transport, but also mechanical support to leaf and stem tissue.

Insufficient (or inefficient) watering will result in loss of leaf turgor and consequent reduction in new shoot extension. Eventually this will lead to die-back and, if not remedied, the loss of the tree.

Waiting until the tree shows signs of drought stress before watering is known as reactive irrigation. Whilst this might keep the tree alive, it will often result in stem die-back and possibly long term structural defects in the tree.

Research has shown that trees irrigated proactively i.e. by implementing a regular watering regime, have over three times the weight of new roots growing into backfill soil material compared to those watered reactively.

The principles of tree root watering

Tree watering requirements

RootRain waterers deliver water directly to the root zone. This eliminates wastage and reduces the risk of surface compaction

The roots are encouraged to establish at a greater depth improving long term drought resistance and tree stability. Provides an access point for air and feeding with soluble fertilisers

Girth (cm)

Height (m)

Estimated daily* transpiration rate (litres)

Suggested first season summer

watering requirements (litres per month)

Feathered 6 1.8 - 3.0 1 36

Light Standard 6 - 8 2.4 - 2.7 1 36

Standard 8 - 10 2.7 - 3.0 1.2 45

Selected Standard 10 - 12 3.0 - 3.6 2.0 75

Heavy standard12 - 14 3.6 - 4.2 3.0 115

14 - 16 4.2 - 4.8 4.0 150

Extra Heavy16 - 18 4.8 - 5.4 5.0 190

18 - 20 5.4 - 6.0 6.0 220

Semi Mature 20+ 6.0+ 7.0+ 300+

Surface irrigation is rarely efficient for trees, the topsoil layer waterlogs, leading to surface run off, soil capping, compaction and wastage. Water has difficulty penetrating the deeper root zone

If surface is irrigated regularly to a shallow depth, roots will remain near the surface leading to a long term susceptibility to drought

*Calculations for transpiration and suggested watering requirement are based on a typical plane tree in a tree pit ameliorated with 25% peat and with a 50mm mulch layer. The figures are approximate and are for guidance only. Allow an extra day for every 10mm of rainfall

2.14

RootRainMetroIrrigation system

Benefits

n Quickandeasytoinstall

n Extremelycosteffective

n Improveddroughttolerance

n Fastwatering(60litresperminuteinporoussoil)

n Reduceswatervolumerequirementsbyeliminatingwastage

RootRainwithplasticcap .

Plasticcapwithchain .

Metalcapwithchain .


InstallRootRainMetro(stateproductcode)c/wpipeandfixingbracketwithattachedtopcapasfollows:

Loopthefreeendofthe35mmperforatedirrigationpipearoundtherootsystemapproximately250mmbelowfinishedlevel.

RootRain Metrothemostwidelyspecifiedtreewaterer .

TheoriginalRootRain MetrosystemisthemostwidelyspecifiedproprietarytreepitirrigationsystemintheUK .DesignedandmanufacturedinBritain,theMetroisavailableinthreedifferentsizesandwiththreedifferentcapconfigurations .

Thesystemisalsoavailableincontractorpackformforselfassembly .



GreenleafGreenleaf

RootR

ainMetro

2.15

Effective Discreet Unobtrusive


n Rootmanagement.See2.02


Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareintheinstallation,treeproductpackagessectionref:GR1001-GR1003,GR1008andGR1009.Product specification and

codes

Product Pipediameter Length Application Captype Code

RootRain Metro 35mm 1 .25m Specimenshrubs/standardtrees Plastic RR1A

RootRain Metro 35mm 1 .25m Specimenshrubs/standardtrees Plasticwithchain RRPC1A

RootRain Metro 35mm 1 .25m Specimenshrubs/standardtrees Metalwithchain RRMC1A

RootRain Metro 35mm 1 .75m Standardtrees/selectedstandardsto8-10cmgirth Plastic RR2A

RootRain Metro 35mm 1 .75m Standardtrees/selectedstandardsto8-10cmgirth Plasticwithchain RRPC2A

RootRain Metro 35mm 1 .75m Standardtrees/selectedstandardsto8-10cmgirth Metalwithchain RRMC2A

RootRain Metro 35mm 2 .5m Selectedstandards/heavystandards Plastic RR3A

RootRain Metro 35mm 2 .5m Selectedstandards/heavystandards Plasticwithchain RRPC3A

RootRain Metro 35mm 2 .5m Selectedstandards/heavystandards Metalwithchain RRMC3A

Simplylooparoundtheshoulderoftherootball . NailthebrackettothetreestakebeforebackfillingtoconcealtheMetrobracket .

Plugthepipeintothebracketbottomcap.Nailthebrackettothetreestaketopreventtheft.Backfilltherestofthetreepit.Itisimportanttoensurethattheinletpipeandtopcapprotrudebetween10mmand50mmfromthefinishedsurroundlevel.Themainbracketsectionshouldnotbevisible.

2.16

RootRainUrbanIrrigation and aeration system

Benefits

n Largecapacity80mminletwith60mmwateringcircuit.

n Easyandquickinstallation.

n Costeffectiveonthelargestorsmallestschemes.

n Extremelyvandalresistant.

n Discreetandunobtrusiveappearance.


InstallRootRainUrban(1,2or3)irrigationsystemasfollows:

Loopthe60mmirrigationpipearoundtheshoulderoftherootball(200mm-300mmbelowgroundlevel)andconnectsecurelytotheteepiece.Theverticalpieceofpipecanbecuttolengthtoensurethattheinletisflushorslightly(25mmmaximum)proudofthefinalpitsurround.

Alargecapacityirrigationsystemwithafixednon-removablegridinlet .Thegridallowswaterandairthroughbutpreventsingressoflitteranddebris .

TheRootRain Urbanisparticularlysuitedtoroadsidevergeandopenspacetreeplanting .Theinletsarestrimmerresistantandcanbesetbelowmowingmachineheight .Theyhaveverylittlevandalappealandnotheftvalue,makingthemidealforhousingestatesandpublicareas .



GreenleafGreenleaf

D

Product specification

n Inlet:80mmheavydutyHDPEmouldedgridtop

n Reducer:80/60mmHDPEwithintegralstrengtheningfins

n Verticalpipe:60mmPEperforatedpipe

n Teesection:HeavydutyHDPEwithnonreturnlockinglugstosecurepipework




Product specification and order codes

Product DiameterD Pipelength Code

RootRain Urban 895mm 3m RRURB1A




Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareinthetreeproductpackagessection,ref:GR1004-GR1007.

Usingthetablebelow,thespecifiercanselectthecorrectsizeinrelationtorootballdiameter .

ThisillustratesthecorrectlevelfortheRootRainUrbaninlet .Toolowcouldleadtoblockages;toohighcanlookobtrusive .

RootRainUrbanthecosteffectivehighcapacitytreewatererdesignedfordurability .

RootR

ainUrban

2.17

2.18

RootRainCivicLarge capacity irrigation system

Benefits

n Largecapacity80mminletwith60mmwateringcircuit

n Ventedaluminiumcaponretainerchain

n Preventsfinesenteringirrigationsystem

n Quickandeasytoinstall

Typical installation Specification

InstallRootRainCivic(1,2or3)irrigationsystem,completewithaluminiumcapandretainerchain.

Loopthe60mmirrigationpipearoundtheshoulderoftherootball(200mm-300mmbelowgroundlevel)andconnectsecurelytotheteepiece.Theverticalpieceofpipecanbecuttolengthtoensurethattheinletisflushorslightly(25mmmaximum)proudofthefinalpitsurround. Wheninstalledcorrectly,onlythealuminiumcapshouldbevisible

TheRootRain Civicsystemisaverywellprovenlargecapacityirrigationsystemwhichhasavandalresistantinletwithapowdercoatedaluminiumcaponaretainerchain .Popularwithlandscapearchitectsandcontractors,theCivichasbeenwidelyusedonprojectsdemandingahighlevelofspecification .



GreenleafGreenleaf


n Inlet:80mmheavydutyHDPEmouldedgridtop

n Inletcap:Aluminiumpowdercoatedwithretainerchain,finishedinblack

n Reducer:80/60mmHDPEwithintegralstrengtheningfins



n Pipecircuit:60mmPEperforatedpipe

Compatiable Arborsystem Products





RootRain Civic 895mm 3m RRCIVIC1A



Usingthetablebelowthespecifiercanselectthecorrectsizeinrelationtorootballdiameter Capisventilated

toallowsomeairexchangetothetreepit .Idealforuseinbarkmulchareas

TypicallocationsforRootRainCivicinstallation

Wheninstalledcorrectly,onlythealuminiumcapshouldbevisible

D

RootR

ainCivic

2.19

2.20

RootRainPrecinct&ArborventFor heavily trafficked areas

Typical Installation Specification

InstallRootRainPrecinct(1,2or3)irrigationsystemc/wcastaluminiuminletasfollows:Loopthe60mmirrigationpipearoundtheshoulderoftherootball(200mm-300mmbelowgroundlevel)andconnectsecurelytotheteepiece.The

The RootRain Precinctisforcentralurbanlocationsrequiringapermanentirrigation/aerationsolution .

TheRootRain PrecincthasbeenspeciallydesignedtointerlockwithourArborsystemrangeoftreegrilles .Thisprovidesatamperresistantsystemwhichwillalsopreventtheinletsinkingsubgradewithanypotentialsoilsettlementaroundthetree .

Benefits

n HeavycastLM6gradealuminiuminletwithstandshighloads

n Stainlesssteelventlidpermanentlyattachedtoinletbystainlesssteelfitting

n Lidliftsandswingstoonesideforfastirrigation

n InlettwistlocksintoGreenleafsrangeoftreegrilles

n CanbeusedinconjunctionwithArboresinporousboundgravel

n Flushfinishensuresnotriphazard

TheArborventisfrequentlyusedtoprovideseveralirrigation/aerationpointsaroundindividuallargetreesinconjunctionwiththeRootCellsystem .



GreenleafGreenleaf


n Inlet:120mmdiametertosuittreegrilles.Heavycastaluminium/bronzeinletwithliftandswivelventlid.Arborvent100mmx100mmtosuit100mmpavers



n Pipecircuit:60mmPEperforatedpipe


Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareinthetreeproductpackagessectionrefs:GR1010-GR1023.

verticalpieceofpipecanbecuttolengthtoensurethattheinletisflushwiththepavingsurround.Iffittingintoatreegrille,ensureinletisconnectedtovertical60mmriserpipe,locateinletintopurposeformedaperturewithinthegrilleandtwisttolockintoplace.



Arborvent 895mm 3m RRARBV1C



Arborvent double inlet 2490mm 8m RRARBVDI3C

D

Usingthetablesabove/below,thespecifiercanselectthecorrectsizeinrelationtorootballdiameter

RootRainPrecinctinletsetinpavedsurround

Arborventinlet



RootRain Precinct 895mm 3m RRPREC1C



GrilletypeInletwhichinterlockswithourArborsystemrangeoftreegrilles .

Inletopensforirrigation .

RootR

ainPrecinct&

Arborvent

2.21




n Undergroundrootballguying.See2.33


n Porousresinboundgravel2.52



GreenleafGreenleaf

SoilstructuresystemsRootCells, StrataCells & Arborsoil

Soilstructuresystem

s

2.23

What is soil structure?Soilstructureisthearrangementofsoilparticles,includingsilt,sandandclaythataggregatetogetherandtheporespacesbetweenthem .Itissoilstructurewhichsupportstreesandplantsandgivesthemfoundationandstability .

Why do we need soil structure systems?Noteverysoilstructureisconducivetothegrowthofplantsandtrees,urbantreesnotleastofall .Treegrowthandfertilityarestronglyinfluencedbysoilstructure,asitaffectsthemovementofair,waterandothernutrientsrequiredfortreestoflourish .Effectivelythearchitectureofthesoil,soilstructureisusuallythemostcriticalelementforthesuccess,orfailure,oftheurbantreetogrowandthrive .Awell-structuredsoilfunctionslikeareservoir,enablesthetreetoaccept,storeandtransmitwater,nutrientsandenergy,providingroominwhichrootscanpropagateandallowingthespaceitneedsforlifeandthenecessarybiochemicalexchangesforgrowth .Toooftentreesareplantedincrampedplantingpitsandinpoorsubsoil,resultinginretardedgrowth,withrootstendingtocolonisetheareaimmediatelyunderneaththepavedsurface,leadingalsotostructuralpavementdamage .Pavedsurfacesrequiresolid,compactedgroundforpedestrianmovementandvehiculartraffic .Withoutcompromisingordamagingthestructuralintegrityofpavedsurfaces,howcanurbantreesbeadequatelyprovidedforintheirurbansetting?

How they workSoilinurbanareasrarelyprovidesthefavourableenvironmentfortreestogrowandflourish .Hardcompaction,lackofaeration,poordrainage,lownutrientlevelsandtheexistenceofpollutantsinsoilstructuresretardrootgrowthandmakeitalmostimpossibleforurbantreestogrowandthrive .Greenleafofferslandscapearchitects,engineersandarboristsstrongsoilstructuresystemsthat,whileconducivetorootgrowth,alsogiveadequatesupportforroadsandpavements .

The products

RootCellthisproduct,developedbyGreenleafinconsultationwithotherbodies,providestheload-bearingsoilstructurethatpreventsthesoilfromdeterioratingandbecominglifelessandcompactedovertime.

StrataCellprovidestherequiredqualitysoilvolumeforextensivetree-rootsystemsandlinkedtreepits

ArborsoilGreenleafsroot-zonemixandload-bearingsoilstructureisused,principally,inareaswherecompactionisnecessary,e.g.,hard-wearingfootpaths.

2.24

RootCellStructuralrootcellswerefirstdevelopedbyGreenleafin2001asload-bearingstructuresystemscomposedofpipemodulesfilledwithqualitysoil .

Suitableforcarparksandfootpaths,RootCellpreventsthetopsoilintreepitsfrombecomingcompactedby,amongotherthings,thepressurefromsurroundinghardsurfaces .

Thestrongestofthesoilstructuresystems,RootCellallowstreesinurbansettingstohavelarge,healthyrootsystems,thrivinginquality,uncompactedsoil .

Thismodularunitisassembledintoaskeletalframeworkormatrixthatprovideslargevolumesofsoilwithinthesoilprofilefortheeasygrowthofroots,whilealsosupportingpavementloads .With92%soilvolume,RootCellpromotesmultiplerootingpatternsandmaximisestherootarearequiredbyurbantreestogrow .

RootCellisthefirstchoicesystemforconstrictedorawkwardlyshapedtreepits,requiringheavyloadbearingcharacteristics .

StrataCell

Representingthefourth-generationrootcelldevelopment,StrataCellwasdevelopedin2007,primarilytoprovidealargermodulewithbiggerspacesforextensiverootgrowthoflarge-canopytrees .

Workingincollaborationwithotherindustryleaders,StrataCellwasbuiltuponsuccessfultrialsandprojectsthatwerealsoaimedatreducinginstallationandtransportcosts,andimprovingthemodulesrobuststrength .

SoilstructuresystemsRootCells, StrataCells & Arborsoil

RootCell benefits

n RootCellhasbeenindependentlytestedtosustainloadsofupto80tonnespersquaremetreevenlydistributed

n Whenloadedwithtopsoil,aRootCellmoduleis92%soilbyvolume

n Maximisestherootingareaforurbantrees

n Canbeinstalledeasilyinmoduleform

n Constructedfrom100%recycledplastic

n Long-termroot-zonemanagementispossiblewheninstalledinconjunctionwithGreenleafsRootRain&RootDirector

n Promotesmultiple-rootingpatternswhicharemoresuitedtourbanlocations

StrataCell benefits

n Designedtosupportenormousverticalaswellaslateralloads

n Excellentmodularstrength

n Integratedmatrixmeansmodulesaresimpleandfasttoclicktogether

n Inexcessof94%oftotalsoilvolumeisavailablefortree-rootgrowth



GreenleafGreenleaf

Designedtohighlyadvancedengineeringspecificationstosupportgreaterverticalloads,StrataCellbringstree-rootsystemsclosertopavementsurfaces .Engineershavecalculatedthat,withonly300mmofgranular

pavementdepth,aStrataCellmatrixcansupportmaximumtrafficloads .

Withverticalandlateralforcesalsoconsideredintheengineeringmake-upoftreepits,StrataCellswell-designedmatrixunitslocktogetherwell,formingamonolithicframeworkwithexcellentmodularstrength .HighlysecureconnectorsallowforStrataCellmodulestoclicktogetherfastandsimply .

Itsopenandskeletalstructureprovidesanenormousgrowthzonefordelicaterootsystems,withinexcessof94%ofthesoilvolumeallocatedfortree-rootgrowth .Thesehighsoil-volumetreepitsaredistinctlymoreadvantageousfortreesasoptimumconditionsfornatureandnurturearerecreatedfortreestoliveandflourish .

StrataCellaperturesarebuilttogenerousspecifications,permittingcommonconduits,servicepipesandaerationmechanismstobeincorporatedintothestructuresdesign .

ArborsoilThissand-basedload-bearingsoilstructuresystemisidealforpavingoverinareaswherecompactionisreallynecessary .Itisacompactibleroot-zonematerialandurbantreesand-mixrecommendedforuseasasecondaryrootingzone,inconjunctionwithRootCells or StrataCells .Arborsoilmustbeinstalledwithgreatcare .

n Generouslydesignedaperturespermitcommonconduits,servicepipesandaerationsystems

n Significantvolumereductionforfreightandlowertransportcosts

n Reducedinstallationcosts

n Madefrom100%post-industrialwastematerial

Arborsoil benefits

n Idealforpavingover

n Canbeusedasasecondaryrootingzonebeneathpavements

ExtensivecomputermodelingandlaboratorytestinghaveestablishedStrataCellasthestrongestlargesoilcell .

Soilstructuresystem

s

2.25

2.26

RootCellSoil structure system

TheRootCellsystemhasbeendevelopedfollowingconsultationwithlandscapearchitects,localauthoritiesandleadingtreeexperts .Theconceptissimpletopsoilisthemostfavourable,naturalrootingmedium .RootCellsprovidetheloadbearingstructurepreventingthesoilfrombecomingcompactedandlifeless .Furthermore,thelongtermrootzonecanbemaintainedbyincorporatingRootRainirrigation/aerationinthedesign .


InstallGreenleafrootmanagementsystemcomprisingRootCells,RootDirectorandRootRain PrecinctDoubleInletsystem.

RootCellsshouldbeinstalledonafirm,

Benefits

n LoadbearingRootCellshavebeenindependentlytestedtosustainloadsofupto80tonnespersquaremetreevenlydistributed

n Whenloadedwithtopsoil,RootCellsare92%soilbyvolume

n Maximisesrootingareaforthetree

n Easilyinstalledinmodularform

n Constructedfrom100%recycledplastic

n LongtermrootzonemanagementispossiblewheninstalledinconjunctionwithRootRain&Root Director productsasshown.

n Promotesamultiplerootingpatternmoresuitedtourbanlocations.



GreenleafGreenleaf

level,freedrainingbase.Thecontractorshouldallowforinstallingalanddraininareaspronetowaterlogging.

RootCellsshouldbeloadedinsituwithagoodquality,freedrainingtopsoil.AsandyloamwithaneutralpHisrecommended.RootCellscanbeloadedwithtopsoilfourlayersatatime.Thesoilmixturemustbedryforthisoperation.

Whereexceptionallyheavyloadingisanticipated,e.g.occasionalHGVoverrun,itisadvisablenottolaymodulesmorethanfourdeep.Theloadcapacitybeginstodecreasewithdepth.Ifindoubt,consultourtechnicaldepartment.

Specifythenumberofmodulestobeusedpertreepit.Quantitywilldependonspaceavailableandbudgetcontactoursalesofficeforcostings.

RootCell Module specification

Productcode GLRCMA

Description Recycledplasticrigidskeletalinterlockingringstructure

Material RecycledHDPE

Dimensions 250mmx250mmx90mm

Loadingcapacity 80metrictonnespersquaremeterevenlydistributedload





n Porousresinboundgravel.See2.52

Standard Tree Pit Details

Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareinthetreeproductpackagessectionrefs:GR1009andGR1011-GR1018.

RootC

ell

2.27

NotehowRootCellsarelocatedinrelationtotheRoot Director, RootRain Precinctandundergroundguying .

Typical RootCell layouts in plan view

96(2deep)or144(3deep)or192 (4deep)

64(2deep)or96(3deep)or128(4deep)

2.28

StrataCellSoil structure system

Benefits

n Designedtosupportenormousverticalaswellaslateralloads

n Excellentmodularstrength

n Integratedmatrixmeansmodulesaresimpleandfasttoclicktogether

n Inexcessof94%oftotalsoilvolumeisavailablefortree-rootgrowth

n Generouslydesignedaperturespermitcommonconduits,servicepipesandaerationsystems

n Significantvolumereductionforfreightandlowertransportcosts

n Reducedinstallationcosts

n Constructedfrom100%post-industrialwastematerial

Designedtohighlyadvancedengineeringspecificationstosupportgreaterverticalloads,StrataCellbringstree-rootsystemsclosertopavementsurfaces .Engineershavecalculatedthat,withonly300mmofgranularpavementdepth,aStrataCellmatrixcansupportmaximumtrafficloads .

Largevoidspacebetweencolumns



GreenleafGreenleaf

StrataC

ell

2.29


PleasecontactGreenleafforfullinstallationspecification.

StrataCell Module specification

Productcode GLSCMA

Description Recycledplasticrigidskeletalinterlockingoctagonalstructure

Material Advancedglassreinforcedpolymer

Dimensions 500mmx500mmx250mm

Loadingcapacity 550Kpaverticalload







Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareinthetreeproductpackagessectionrefs:GR1019-GR1023

Interstackedforshipping

EasycliptogethermatrixdesignLoadbearingdeckforspanningsharedutilitytrench

2.30

ArborsoilCompactible root zone material

AtGreenleaf,wearefrequentlyaskedwhetheroururbantreeproductscanbeusedinconjunctionwithAmsterdamTreeSoilorsimilarrootzonesandmixes .

Weadvisethatthisproductshouldonlybeusedinareaswherecompactionisreallynecessary,i .e .underfootpathsetc .Intheactualtreeplantingpititself,itisalwayspreferabletouseagoodqualitytopsoiltohelpthetreeinitsinitialestablishment .

Webelievethatthesecompactibletreerootzonemixesdohavearoletoplaybutmustbespecifiedandinstalledwithcare .

Somespeciesappeartodowellinthesemixes,othersstruggletoestablish .Researchresultsareatpresentinconclusive .

Benefits

n Usedasasecondaryrootingzoneunderneathpavedareas.

Typical Installation Specification

OnlyspecifyArborsoilinthesecondaryrootingareawhenhavingacompactedsurfaceisunavoidable.

Ensureadequatedrainagetoareasusingthismaterial.Itcanactasasponge,soakingupgroundwaterandstagnating.

Accuratecompactionlevelsarecriticaltotheproductseffectiveness.Thetrenchortreepitshouldbebackfilledinlayers

Arborsoilwasusedasasecondaryrootingzoneunderthispavedpedestrianarea .



GreenleafGreenleaf

Technical analysis

Ph 7 .5

Phosphorous 20-50mg/100g

Potassium 10-20mg/100g

Magnesium 100-300mg/100g

Organic matter + a range of trace elements 4-6%

Pleasecontactsalesforpricesandavailability .








Toclearlyillustratecorrectproductapplication,pleaserefertoourstandardtreepitdetailswhichareinthetreeproductpackagessectionref:GR1015.

300mmthick,eachlayerbeingcompactedto1.5-2.0megapascalsandcheckedwithapenetrograph.

Specifyanadequateirrigation/aerationsystemtotherootzonesuchasRootRainPrecinctwithtwoinletspertree.

Arborsoil orothertreesandmixeswillnotpreventsurfacerooting.WesuggestusinginconjunctionwithRootDirectors,ReRoot300 orReRoot600 todivertrootsintothepreferredrootingarea,preventingrootheaveproblemslateroninthetreeslife.

Arboursoil

2.31

Footpathconstruction

Arborsoilcompactible

rootzonemix(secondary

rootingzone)

PrimaryrootingzoneRootCells(92%

topsoilbyvolume)

RootRainPrecinct

Cleanpea

gravelTopsoil

RootDirector

RootRainPrecinctDIirrigation/aeration

Geotextile



GreenleafGreenleaf

GuyingandtiesSupport and protection

Greenleaf offersacomprehensiverangeofproductsforguying,tyingandprotectingnewtreeplanting .

ExtensiveresearchhasresultedinthelaunchofthenewGreenleafArborguytreeguyingsystem .Thepatenteddesign,uniquetoGreenleafprovidesfasteasyinstallation .

TheArborguyanchorhasbeendesignedtobeasstreamlinedaspossiblefordrivingintocompactedsubsoils,whilstcombiningsuperbgroundlocktechnologyforsecuretreeanchoringtestingshowsinexcessof1340kgsofupwardforceonjustoneanchordrivenintosubsoilfromgroundlevel .

Ifspecifyingplasticorrubbertreeties,ensurethesearecheckedregularlyduringthemaintenanceperiodandremovedassoonasthetreehasestablisheditsownanchorage .Unremovedtiescaneventuallystranglethetreeasitstrunkexpands .

Analternativeforsmalltreesistospecifyourbiodegradabletreetie .Naturetiemadefromhessian,whichwillbreakdownnaturallyovertimeasthetreeestablishesitsownanchorage .Inexposedareas,itmaybenecessarytoretietreesduringthemaintenanceperiod .

Guyingandties

2.33

2.34

Thismethodofsecuringtreeshasmanyadvantagesoverstakingandissuitableforlargeroot-balledtrees .TheRootballisheldinpositionbydrivingthreeanchorsintothebaseofthetreepitandthenfasteningtheArborguyrachetstrapasshown .

Ifrequired,thesystemcanbere-tensionedatalaterdate .

Benefits

n AguyingsystemtofullycomplementGreenleaftreepackages

n Designedfortreesintheurbanandruralenvironments

n Aneffectiveandoutofsightmethodofguyingtreesinpreferencetostaking

n Strappingwillnotcuttherootball,thereforenomatsortimberrequired

n Groundanchorsmanufacturedfromadvancedhighstrengthcomposite

Straptobethreadedthroughrings,overrootball,intorachettensionerandtensionedasnecessary .Arborguyanchorsystem,pluscompleteinstallationtoolkitsavailable

ArborguySecuring large root balled trees



GreenleafGreenleaf


Product Code

Arborguystrappedmediumanchorsystemwithdrivein

heavydutycompositeanchors .Includeswebbingstrapand

rachettensioner .Suitablefortreesupto20cmgirth . SASMP

Arborguy strappedlargeanchorsystemwithdrivein

largeheavydutycompositeanchors .Includeswebbingstrapand

rachettensioner .Suitablefortreesupto40cmgirth SASLP

Arborguy strappedanchordeadmanguyingsystemsupplied

with3slipknotguyswebbingstrapandrachettensioner .

Fortreesupto40cmgirth . SASDMA

ToolkitforinstallationofSASMsystemsincludingextralengthdriverod,

driverodrammer,settingtoolanddriverodpullouttool SASKITXMA

ToolkitforinstallationofSASLsystemsincludingextralengthdriverod,

driverodrammer,settingtoolanddriverodpullouttool SASKITXLA Undergroundguyingisthemostunobtrusivemethodforsupportinglargerootballedtrees .

Guyingusingdeadmananchors .Arborguystrappedundergroundguyingsystem

Arborguy

2.35

Arborguy deadman guying system

TheArborguydeadmansystemisidealwherethereisariskofundergroundutilitiesintheimmediatevicinityofthetreepit.

Asshowninthediagram,threedeadmananchors(heavytimbers)areplacedinthebaseofthetreepitinatriangleshapetosecurethewiresto.

Foreachofthethreecables,looptheDringendofeachcablethroughthewireloopontheoppositeendtocreateaslipknotnoose.Thisnooseisthenpositionedovertheendofeachofthethreedeadmananchorsandtensionedupinthecentre.Oncethishasbeendoneinthecentreofeachofthedeadmen(threetimes),thenylonwebbingpassesthroughthesmallloopontheendofeachcableandisratcheteduptightoverthetopoftherootball.

2.36

TreetiesSecuring large root balled trees

Whenselectingamethodandthematerialfortreetyingthefollowingfactorsshouldbeconsidered.

1. Sizeoftree.

2. Location.

3. Maintenancerequirements.

4. Likelywindloadingandother environmentalconsiderations.

5. Durabilityandcost.

6. Vandalism.

7. Aestheticappearance.

Greenleafstocksanextensiverangeoftreetieproductstosuitmanyvaryingapplications.

Twinstake,beltandsleeve .

Beltandpad . Twinstakebeltandpad



GreenleafGreenleaf

Arbortie

ThenewArbortieisa600mmlongsupersofttreetiewhichisstrongwhilstofferingsuperiortreeprotection.

Theribbedcushioneffectprovidesgentleyetfirmsupportforthetreeandprotectsthetenderbarklayer.Theelasticityofthesetiesisveryconsiderablewithelongationupto450%.Thismeanstheyremainflexibleandexpandasthetreegrowswithoutdamagingthebarklayer.

ThedesignoftheArbortiemeansitisveryquickandeasytofit.Itissuitableforalltreesizesupto20cmgirthbasedona75cmtreestakediameter.

ManufacturedfromresilientUVstabilisedPVC,theArbortielifespanisbetween5&10years.Itisrecommendedthatthetieismanuallyreleasedoncethetreehasestablisheditsownrootanchorage.

Arbortie

Types of belt

ReinforcedNylonreinforcedrubberbelt,mostpopularversionforlocalauthoritiesandlandscapers

Product Length(m) Width(mm) Code

Reinforced 25 25 GLB25A

Reinforced 25 37 .5 GLB38A

Pads, blocks, collars and sleeves

Blockcode Description Beltsize(mm)

GLPAA Standardpad 25mmbelt

GLPAAA Extralargepad 38mmbelt

GLPBA Chunkypad 25mmbelt

GLPFA Plasticsleeve(300mm) 25mmbelt

GLPFFA Plasticsleeve(300mm) 38mmbelt

Arbortie

Arbortie600mmlongsupersofttreetiewhichisstrong,whilstofferingsuperiortreeprotection .

Code Description Beltsize(mm)

GLAT1 Arbortie 600mm

Treeties

2.37

GLPAAandGLPAAA

GLPBA GLPFAandGLPFFA

2.38

NaturetieBiodegradable tree tie material

Ingeneral,Naturetiecanbeusedsimilarlytoothertiematerials,butwithouttheneedofaspacerbetweenthetreeandthestake .Thespacercanbeformedbythematerialitself .

Thisproducthasmanyadvantagesoverplasticandrubber .Itwillnotstranglethetreeasthetreegrowsbutwillbiodegradegraduallyasthetreeestablishesitsownrootsforanchorage .

Benefits

n 100%naturalmaterial,environmentallyfriendlyfromsustainablesources.

n Strong,versatileandfasttoinstall.

n Verycosteffectiveforlargetreeplanting/forestryschemes.

n Willnotstranglethetree.

n Reducesmaintenancecosts.

Naturetieaversatileandnaturalproductsuitedtovarioustyingapplications

Product codes

Product Code

Naturetie(30mrolls) GLNTA



GreenleafGreenleaf

TreeGuardTie

TheGreenleafTree Guard Tieisdesignedtokeepthetrunkofanewlyplantedtreecentralinrelationtothetopofthetreeguard .

Inareallifesituationitisnotalwayspossibletoplantthetreedeadcentralinrelationtothetreeguardtogetherwithbeingverticallyplumb .Withthisinmindtreesareoftenseenchafingatthetopofatreeguardinwindyconditions .Thiscancauseseriousdamagetothetreetogetherwithlookingunsightlyasthetreeisatanundueangle .

TheheavydutybuckletieissecuredbypassingthroughaspecialLshapedbracketatthetopofthetreeguard .Thisisthenjoinedtoanotherbuckledtiewhichsurroundsthetreetrunkandfixestoanotherbracketontheoppositesideofthetreeguard .Thetiedoesnotholdthetreerigidlybutpreventsthepossibilityofthetreetrunkfrommakingcontactwiththetreeguard .

Benefits

n Strong,versatileandfasttoinstall.

n Verycosteffectiveforlargetreeplanting/forestryschemes.

n Willnotstranglethetree.

n Reducesmaintenancecosts.

TreeGuardTiekeepstreecentralwithinguardpreventingchafinginwindyconditions

Product codes

Product Code

Tree Guard Tie GLGTAA

NaturetieandTreeguardtie

2.39



GreenleafGreenleaf

TreegrillesandguardsAttractiveandfunctional,grilleshaveanimportantroletoplayinmaintaininghealthytreepitconditions .Greenleafsrange,allnamedafterriversinGreatBritain,offervalueformoneyandthequalityyouwouldexpectfromthecountrysleadingspecialistsupplierofurbantreeplantingproducts .

Treegrillesandguards

2.41

2.42

TreegrillesFully integrated grille systems

Duringthelasttwodecades,Greenleafhasbeendevelopinginnovativeproductstoassisttreesbelowgroundintheirbattletoestablishandgrowinhostileurbanenvironments .NowwiththeArborsystemtreegrillerange,thatsameattentiontodetailhasbeenturnedtotreepitsurroundsystems .

Arborsystemtreesurroundsareengineeredtoanextremelyhighstandardunderrigorousqualitycontrols .GreenleafisanISO9002companyandtakesproductdevelopmentandqualityseriously .Consequently,therangedetailedinthisbrochurerepresentsthelatesttechnologyintreesurrounds .IllustratedarejustsomeofthedesignfeaturesintegraltotheArborsystembrandthathaveliftedourrangetonewlevelsofexcellence .

Benefits

n Enablesthetreetoreceivenaturalwater

n Preventssurroundingsoilfrombeingcompacted

n Addsarchitecturalflairtopavedsurfaces

n AvailableinmanydifferentfinishesincludingpowdercoatingtoanyRALcolour

n Thegrilleframescanbedisassembledonceinstalled.Thisgivesthecontractortheoptionofplantingthetreebeforeorafterinstallation

AvonDTSductileirontreegrillewithintegratedRootRainPrecinct Clydetreegrillewithagalvanisedfinish



GreenleafGreenleaf

Design

Ourproductdevelopmentteamhasworkedhardtoensurethateventhemoststandarddesignsworkwell,looksmartandgiveatroublefreelife.Researchandtrialshavehelpedustoarriveatthemosteffectiveandrobustcoatingswhereapplicableforourproductrange.

Support frames

Arborsystemsupportframeshaveinvolvedmanyhoursofdevelopmenttoproduceadesignthatiseasytoinstall,vandalresistant,costeffectivetomanufactureandunobtrusiveinuse.Theseframesareengineeredtothehigheststandardsandcanberatedtohandledifferentloadingrequirements.

Inner ring design

Allowsforaneatandprofessionalcentralopening.Thisgivesadditionaltensilestrengthaswellasprovidingfixingpointsfortheverticalsteelguardsystem.

Irrigation inlet fitting

ArborsystemRootRainPrecinctirrigationinletfittinganotherexampleofproductsengineeredforpurposeheavydutycastLM6materialgivingapermanentaccesspointforwaterandair,sovitalforthetree.Plus,retainingbrackettoensuresimpleinstallationandalignmentofirrigationpipe.

Built for strength

Thesetreesurroundsaremanufacturedtowithstandtheeverydaytrafficandloadingsexpectedofurbanhardscapes.Ourproductadvisorscanworkwithyoutoensurethatthegrilleyouselectissuitedtothetypesoftrafficyouareexpectingtousethearea.TheDTSgrillerangeisdesignedtowithstandanyreasonabletrafficoverrun.

Integral features

Thesehighqualitycastductilegrillescanincorporateintegralaperturesforirrigationaerationinletsanduplighters.Twistlockaperturesecuresthefittingstoavoidtheftorsubsurfacesettlementdifferentiation.

Treegrilles

2.43

2.44

DTS Grille Systems

ThestandardArborsystemtreegrillerangeshownhereisdesignedtointegratewithavarietyofdifferentsettings.Choiceofdesignwillbeinfluencedbythefollowingaspects:

n Existingsiteparametersanddesignelements

n Accessrequirements

n Anticipatedvehicletraffic

n Disabledaccess

n Designerspersonaljudgementonaesthetics.

Arborsytemgrillesintegratewithbelowgroundrootmanagement,irrigation,aerationandguyingsystems.Itisimportantthatthebelowgroundaspectoftreepitdesignisgivencarefulconsiderationatthedesignstage.Treeliteratedesignwillpaydividendsforyearstocomeintheformofhealthy,attractivetrees.

StandardtreegrillesFully integrated grille systems

Themajorityofourtreegrillesaremanufacturedfromcastductileiron .However,wealsoofferarangeoffabricatedgrilleswhichcanbeproducedinmildorstainlesssteel .Ourrangeoftreegrillescanbemadetosuitanyapplication .Iftheyaregoingtobesubjecttoexceptionalloading,heavydutyframeswillberequiredforthecastductilegrillesandthefabricatedsteelgrilleswillbemanufacturedfromlargersectionmaterial .

Thestandardfinishismattblackpolyesterpowdercoated .Thishighqualityfinishisextremelydurable .AnycolourfromtheRALrangeisavailableasanoption .Forextraprotectiononmildsteelproductszincgalvanisingisstandard,followedbyahighqualitycoatingtoanyRALcolour .

Somegrillesandguardsarenowavailablefromstock .PleasecontactGreenleafsaleslineforacompetitivequotationandstockavailability .

Clydegrille,incentralLondon,manufacturedfromgrade316stainlesssteel .



GreenleafGreenleaf

Adur

Avon

Tay

Clyde Dart

Yare

Standardtreegrilles

2.45


Ensurethedeptharoundedgeoftreegrilleframehasaminimumof100mmofconcrete.Reinforceifloadingrequiresit.Placeouterframeonconcreteensuringthattopislevelandataheighttosuitadjacentsurfacing.Whenconcretefoundationhassetsufficiently,fittreegrillesegmentsandfastenanti-vandalbolts.RootRainPrecinctinletandverticalsteelguardcannowbefitted.

Standard tree grille range availability

Sizesquare 1000mm 1200mm 1500mm 1800mm

Adur ADUR10A ADUR12B ADUR15A

Avon AVON10B AVON12B AVON15A AVON18B

Clyde CLYDE10GA CLYDE12GA CLYDE15GA CLYDE18GA

Tay TAY10B TAY12B TAY15A

Internalaperturediameter 500mm 600mm 600mm 600mm

Sizerounddiameter 1000mm 1200mm

Dart DART10A DART12A

Yare YARE10A YARE12A

Internalaperturediameter 500mm 600mm

NOTE:Othersizesavailabletospecialorder

2.46

TreegrillesFully integrated grille systems

Welldesignedgrillesenablethetreetoreceivenaturalwater,preventsurroundingsoilfrombeingcompactedandaddarchitecturalflairtothepavedsurface .

Designsvarytofunctionunderdifferentcircumstances .Grillepatternswithsmallergapsarechosenwhereminimumchangetothesurfaceisneeded .Theywillretainplantingmaterialbutallowthefreepassageofpushchairs,wheelchairsandsupermarkettrolleys .

Availableinawiderangeofdifferentsizes,treegrillescanbespecifiedaspartoftheArborsystempackage,incorporatingverticalguard,rootmanagement,irrigationanduplighterintegration .

Greenleafhavedevelopedarange

offourdesignlinetreegrillesto

complimentlandscapingschemes

ofthehighestquality .Individual

datasheetsareavailableforeach

grilledesign .Thisrangecanbe

manufacturedinalmostanysizeto

suityourdesigns .

Castle

n Allowsspecifierstocontinuetheirchoiceofpavingoverthetreepitarea

n Availabletocomplywithallregularloadspecifications.

n Removableinnersectionallowsfortreegrowth

n Heavydutyrecessedtreegrille

n Built-intreeirrigation/ventilationinlets

n Robustgalvanisedconstruction

n Availableindifferentsizes

Boulevard

n Designflexibilityadditionalparallelsegmentsavailableprovideforlongertreepitsurfaceprotection.

n Designmaximisestreepitsurfaceopennessforwaterandair

n Naturalrustoxidisationprovideslongtermprotection

n Highstrengthductileironconstruction

n ContemporarydesignCastletreegrille,allowsspecifierstocontinuetheirchoiceofpavingovertreepitarea



GreenleafGreenleaf

Treegrilles

2.47

Medway

n New600mmsquarecompacttreegrillesystem.

n Ovalcentralaperturetoallowfittingoftreestake.

n Verystronglasercutsteelconstruction.

n SuppliedwithRD510ARootDirector.

n DesigncanbecustomizedtoincludenamesofStreetscape/Districtetc.

n Highqualitypowdercoatedfinishesavailableindifferentcolours.

ArborAdvance

Bespoke

n Fordesignerswhowishtocreatetheirownsignatureonaproject,bespoketreegrillescanbeaninvaluabletool.

n Ourproductdesignteamwillbepleasedtoworkwithclientstocreateaworkingtreegrilledesignfromtheirvisualideas.Contactoursalesofficefordetails.

n Designscanbecreatedfromarangeofmaterialsi.e.CastIron,DuctileIronandStainlessSteel.

n Awidechoiceoffinishesisavailablefromgalvanizingtopowdercoating.

n Atrulymoderndesign,bothpracticalandeye-catching

n Nonslipventilatedsurface

n Excellentsolutionfordisabledaccessorshoppingtrolleyareas

n Attractiveminimalistlines

n Lowmaintenanceandrobustdesign

2.48

VerticaltreeguardsProtection in an urban setting

Benefits

n Protectionagainstvandalismandaccidentaldamage

n DesignedtofitwithinGreenleaftreegrillerange

n Addstoqualitydesign

Bespoke

Inanurbansetting,youngtreesinparticulararevulnerabletodamagefrombicyclesandotherequipment,aswellasgratuitousvandalism .TreeguardsofferedbyGreenleafareofstrongconstructionandvaryingdesignandprovidetheidealanswertosuchproblems .

Treeguardscanequallymakeahighqualityvisualdesignstatementonpublicrealmlandscapeschemes .Theguardsshownmaybefittedtomediumorheavydutyframesorgroundfixedwhenusedinparkland .Thesimpleadjustingmechanismallowsguardstobeeasilysetonmostgradients .

Eachguardtypeismanufacturedinanumberofstandardsizestofitallgrilles .Phoneoursaleslineforpricesandavailability .

greenleaf manual

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