PRODUCT DATA SHEET
Cellweb® TRP Installation Guide Geosynthetics Limited Tel: 01455 617 139 Fax: 01455 617 140 Email: [email protected]
Installation Method
1. Prepare the Surface
• Removethesurfacevegetationusingappropriatehandheldtoolsorherbicide(seeNote1).• Removeanysurfacerocks,debrisandorganicmaterial.• Createalevelsurfacebyfillinganyhollowswithcleanangularstoneorsharpsand.• Donotleveloffhighspotsorcompactthesoilthroughrolling.
2. Lay out the Treetex™ Non-Woven Geotextile
• LayouttheTreetex™overthepreparedarea,overlayingtheedgesoftherequiredareaby300mm.• Overlapanyjoinsby300mmminimumormore,dependingonsoilstructure(seeNote2).
3. Lay out the Cellweb® TRP Cellular Confinement System
• LayoutthecollapsedCellweb®TRPon-topoftheTreetex™.• PlaceoneofthesuppliedJpinsintothecentrecellattheendofthepanelandsecureintotheground.
Step 1: Prepare Surface Step 3: Lay out Cellweb® TRPStep 2: Lay out Treetex™
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• Cellweb®TRPisaNODIGtreerootprotectionmeasureanditisrecommendedthatnoexcavationbeperformedwithoutpriorapprovalandguidancefromtheLocalAuthorityArboriculturalOfficer.
• Soilcompactionfromvehicles,machineryandmaterialsistobestrictlyprohibitedduringconstructionwithinRootProtectionAreas(RPAs).
• ApprovalmustbeobtainedfromtheLocalAuthoritythatthedesignandthemethodofconstructionisacceptable.• Furtherinformationisavailablefromthefollowingtwodocuments; -BritishStandardBS5837:‘TreesinRelationtoDesign,DemolitionandConstruction’(2012). -ArboriculturalAdvisoryandInformationService:Practicenote12–‘ThroughtheTreestoDevelopment’ (APN12).
Cellweb® TRP - Installation Guide
• PullouttheCellweb® TRPtoitsfull8.1mlengthandsecureitslengthwithanotherJpin.
• Nowmeasureitswidthto2.56mandsecureineachofthecornerswiththeJpins.• Use10pinsperpaneltocreateapanelmeasuring8.1mx2.56m.
• Thiswillproduceacellsizeof259mmx224mmwhichistherequiredcelldiameter.Eachcellmustbefullyextendedandundertension.
• Stapleadjacentpanelstogetherateachcell(seeNote3).• Ifacurvedpathorshapeisrequired,thisshouldbecutwhentheCellweb®TRPpanelispinnedoutto8.1x2.56m,
ensuringcompletecellsremain.DonottrytocurveorbendtheCellweb®TRPpanelsintoplace.• Allcellsmustbefullyopenedtotherequireddiameter.
Step 3: Pinning Cellweb® TRP Step 3: Stapling Cellweb® TRP
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4. Infill the Clean Angular Stone
• Theinfillmaterialmustbeacleanangularstone,Type4/20mmorType20/40mm(seeNote4).• DonotuseM.O.Ttype1orcrushedstonewithfinesfortreerootprotection.• InfilltheCellweb®TRPcellswiththecleanangularstone,workingtowardsthetreeandusingtheinfilledpanelsasa
platform.• Minimum25mmoverfillofcleanangularstonewhenusedinconjunctionwithahardsurface.• Nocompactionisrequiredoftheinfill.Donotuseawhackerplateorothermeansofcompaction.• Encouragesettlementofthestonewiththeuseofalightrollerorwith2-3passesoftheconstructionplantusedfor
installation.• Ifthecleanangularstoneisbeingusedasthefinalsurface;regularmaintenancewillberequiredtoensureaminimum
overfillof50mm. 5. Edge restraints
• ExcavationsforkerbsandedgingsshouldbeavoidedwithintheRPAs.• Whereedgingisrequiredforfootpathandlightstructures,apegandtreatedtimberboardedgingisacceptable• Otheroptionsincludewoodensleepers,kerbedgingconstructedon-topoftheCellweb®TRPsystem,plasticand
metaledgingetc.
6. Surface options
• AllsurfacesinRootProtectionAreasmustbeporous.Surfacescanincludeblockpaving,asphalt,loosegravel,grassandgravelretentionsystems(e.gGolpla),resinboundgravel,concreteetc.
NOTES1. Herbicide: AccordingtoBS5837:2012“Theuseofherbicidesinthevicinityofexistingtreesshouldbeappropriate
forthetypeofvegetationtobekilled,andallinstructions,warningsandotherrelevantinformationfromthemanufacturersshouldbestrictlyobservedandfollowed.Careshouldbetakentoavoidanydamagingeffectsuponexistingplantsandtreestoberetained,speciestobeintroduced,andexistingsensitivehabitats,particularlythoseassociatedwithaquaticordrainagefeatures.”
2. Geotextile: WerecommendtheinstallationofaTreetex™undertheCellweb®TRP,orunderthesub-base,ifinstalled.TheoverlappingbetweenadjacentrollsofGeotextileshouldbe:CBR>3%:300mmminimum,CBRbetween1%and3%:500mmminimum.CBR≤1%:750mmminimum.
3. Staples:Numberofstaplesperjoin:200mm:5staples.150mm:4staples.100mm:3staples.75mm:3staples.4. Granular Fill: Opengradedsub-base,cleanangularstoneType4/20orType20/40.PleaserefertoBS7533-13:2009
andtotheDesignManualforRoadsandBridges(DMRB),Volume4GeotechnicsandDrainage,Section1Earthworks,HA44/91,Volume7–IAN73/06DesignGuidanceforroadpavementfoundationsandManualofContractDocumentsforHighwayWorks(MCHW),Volume1SpecificationforHighwayWorksfortheconstructionandmaintenanceofthefillmaterial.
Cellweb® TRP - Installation Guide
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This information corresponds to our current knowledge on the subject. It is offered solely to provide possible suggestions for your own experimentation. It is not intended, however, to substitute for any testing you may need to conduct to determine for yourself the suitability of our products for your particular purposes. This information may be subject to revision as new knowledge becomes available. Since we cannot anticipate all variations in actual end use conditions, Geosynthetics Limited makes no warranties and assumes no liabilities in connection with this information. Nothing in this publication is to be considered as a licence to operate under or a recom-mendation to infringe any patent right.
Step 4: Clean Angular Stone Step 6: Surface OptionsStep 5: Edge Restraints
Recommended
