Works Approval Report.pdf - the National Capital Authority

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Campbell Section 5 - Works Approval Project Ref: 110029Prepared for the Land Development AgencyAGENCY NO COMMENTS PROPONENT’SRESPONSEfactors in designing for appropriate located in parking bays.clearances include speciesselected, growth habit – size and Reinforced tree pitsshape of tree – and the ability of have been specified.the tree to develop with limitedpruning and maintain access forpedestrians / vehicles using theadjacent path / road etc.DATERECEIVEDService Clearances – Why havewater main 900mm from treelocation with a 2m zone clear togas/tel/elec service? Eg in “AccessStreets” such as Getting West andEast, Shareway etc. The 900mmclearance from pipe to tree willmean future excavation of theservice will severely impact (likelyrequire removal of) the streettree/s. This minimal clearancebetween trees and pipe services isnot acceptable.Anzac Park East – 9m vergeExisting trees – requires criticalassessment of what’s there andwhat’s worth retaining; also how willadditional planting affect theexisting trees. (Note: we havestarted to phase out the Celtis treesin this street – this commenced in2001 and planting of Pyruscalleryana ‘Bradford’ was carriedout adjacent to a number of housesto the north of Page St. TheArbutus are only present in theverge south of Page St.)Verge cross sectionscomply with TAMSStandard Drawing DS4-01. The minimumplanting reserve shownin this drawing is1200mm. 1500mmplanting reserve isproposed by CampbellSection 5, together withroot barrier/root directorand reinforced kerbs.There are requirementsand agreed standardpractice for the locationof services such aswater relative to thekerb. The verge designis based on theCanberra CentralDesign Manual for Civic,where water is locatedbetween the kerb andtree planting. Theproposed verges aretypically
Campbell Section 5 - Works Approval Project Ref: 110029Prepared for the Land Development AgencyAGENCY NO COMMENTS PROPONENT’SRESPONSEParade.DATERECEIVEDExisting trees and proposed trees –Eucalyptus cinerea are proposed –this species is generally notconsidered suitable for street treeplanting anymore, it needs a largespace to develop where it will notimpact on adjacent people andproperty (there is a 2.5m wide pathand kerbside parking proposed thatwould be beneath these treecanopies). The proposed treespacing is too crowded, and thereis only 1.5m between alignments ofthe existing and proposedtrees. Need to critically assess thespace available for proposed treesto ensure they can be planted andsuccessfully develop alongside theexisting trees.What is the proposed surfacetreatment for this verge? How willthis be installed with appropriateprotection of existing trees?Eucalyptus cinerea –generally a large spacehas been allowed fordevelopment of eachtree – the pedestrianpath is now kerbsidewhich has a reducedimpact on the existingcanopy and root zone.Buildings are setbackbetween 2 and 8m fromthe boundary. E. cinereais favoured by the NCAto provide necessarylevel of screening alongthis edge.Proposed treatment ofthis verge – grassStreetscape Trees – (*) the treetype for all locations proposed mustmeet TAMS Design Standards,check for minimum verge width andall clearance requirements inrelation to the size and shape ofthe tree.Streetscape trees havebeen reviewed. Pleasesee Appendix 11.Tree spacing must allow for treesto develop to mature canopy sizewithout interfering with adjacenttree/s – many of the spacingsindicated are too close.o T1 Eucalyptus mannifera ‘LittleSpotty’ – tree type supported,but minimum clearances mustbe met for road and path.o T2 Ulmus parvifolia – mustspecify what cultivar / varietyis proposed. Will need tomeet minimum verge widthand clearance requirements.o T3 Eucalyptus ovata – notsupported (not in TAMSDesign Standards)o T4 Zelkova serrata –supported.o T5 Eucalyptus mannifera –Appendix 11Appendix 11Appendix 11Appendix 11Appendix 11November 2012 Cardno 93
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Works Approval Report.pdf - the National Capital Authority

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