Part I - Other Considerations - Richmond Valley Council

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Richmond Valley Development Control Plan 2012to be preferred species for landscaping and garden purposes, careshould be taken to avoid propagating these species within the vicinity ofsewer/water pipes, or other susceptible materials such as paving,OSMS, subterranean wiring, etc.Table I5.3 Species list which pose a high danger of root intrusionBotanical Name Common Name Risk of RootIntrusionCinnamomum camphora Camphor Laurel ExtremeFicus species Fig Trees & Rubber Plants ExtremePopulus species Poplars ExtremeSalix species Willows ExtremeErythrina species Coral Trees Very HighEucalyptus species Large Gum Trees Very HighJacaranda mimosifolia Jacarandas Very HighLiquidambar styraciflua Liquidambas Very HighAraucaria species Norfolk Is. & Bunya Pines Very HighBrachychiton acerifolium Illawarra Flame Tree Very HighCasuarina species Casuarinas Very HighMelia azedarach Australian White Cedar Very HighPinus species Pine Trees Very HighPlatanus acerifolia Plane Tree Very HighSchinus molle Pepper Tree Very HighUlmus species Elms Very HighBouganvillea species Bouganvilleas HighCortaderia selloana Pampas Grass HighGrevillea robusta Silky Oak HighIlex species Hollies HighLagunaria patersonii Norfolk Island Hibiscus HighLigustrum species Privets HighMagnolia species Magnolias HighNerium oleander Oleanders HighPhoenix canariensis Canary Island Date Palm HighPhyllostachus species Bamboos HighToxicodendron species Rhus Trees HighLophostemon confetus Brush Box, Tristania HighWisteria species Wisteria High(3) Crime Prevention Through Environmental Design principles –Landscaping – see Chapter I10 for detail concerning CPTED provisions‣ Avoid landscaping which obscures natural surveillance.As with 'blind corners' or general concealed areas, the large size ofcertain vegetation obstructs visibility and makes people feel uneasy andunsafe. Perceiving that something may be 'behind those bushes' candiscourage genuine use of a space.‣ Avoid medium height vegetation with concentrated top to bottom foliage.Plants such as low hedges and shrubs (1 to 1.2m high), creepers,Part I – Other Considerations – Landscaping I.54
Richmond Valley Development Control Plan 2012ground covers or high canopied vegetation are good for naturalsurveillance.‣ Trees with dense low growth foliage should be spaced or have the crownraised to avoid a continuous barrier.‣ Use low ground cover or high canopied trees, clean trunked to a heightof 2m around children's play areas, car parks and along pedestrianpathways‣ Avoid vegetation that conceals the building entrance from the street.(a) Additional Application of CPTED Principles relating to ResidentialDevelopment designLandscaping can be an effective way of controlling/directing movementin an area. Depending on the intention, it can either restrict or encouragepeople to access a particular area.‣ Vegetation can be used as barriers to deter unauthorised access Avoidlarge trees/shrubs and buildings works that could enable an intruder togain access to the dwelling or to neighbouring dwellings. Prickly plantscan be used as effective barriers. Species include bougainvilleas, roses,succulents, and berberis species.‣ Large trees, carports, skillion extensions, fences, and downpipes insituations can provide a means of access into yards or up to secondstorey windows or balconies.(5) Infiltration and Evaporation ConsiderationsAreas of Landscaping should be provided in such a way as to direct internaloverland stormwaters to landscaping areas for infiltration.‣ Urban Areas - Initial stormwater should be directed toward and ontolandscaping areas, however once saturation is reached the on-flow mustbe directed toward stormwater infrastructure in urban areas where thisinfrastructure is provided. High regard should be incorporated within thedesign for Water Sensitive Urban Design (WSUD) and Chapter I9 shouldbe consulted for detail concerning WSUD principles.‣ Rural Areas – Landscaping should carefully be selected within proximityto On-site Sewage Management Systems as shadowing and rootinfiltration may dramatically affect the efficiency with which thesesystems safely treat effluent. Plantings of only extremely shallow rootingplants and grasses may only be considered on evaporative trenches andnear other essential components of OSSMS. The landscape designermust be aware of where all components of the OSSMS system arelocated and design the landscaping appropriately.• In some cases, (secondary or tertiary) treated effluent may beapplied to correctly designed and located landscaping,• Stormwater overflow from roof catchment systems should bedirected onto landscaped areas designed for infiltration andreduction of erosive scouring (with the inclusion of a retentioncomponent where appropriate).Part I – Other Considerations – Landscaping I.55
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Part I - Other Considerations - Richmond Valley Council

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