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Continuous tree trenches within new footpath extension from back of kerb within portions of 2 city blocks on both sides of street (Portions considered 6 existing trees along footpath outside City Hall)
Geotextile lined trench
Structural soil mix = 200mm bluestone spalls, clay-loam media (filler soil) of calculated void volume (40%) washed in during installation stages, 2 horizons of soil mix used within tree planting sites
Refer to earlier Case Study Description.
CONNECT
Clay-loam media (filler soil) of calculated void volume (40%) washed in during installation stages, 2 horizons of soil mix used within tree planting sites (see design detail diagram within paper)
Geotech core sampling survey done for the project – report not available
Findings were predominantly mixed fill, stiff clay with some portions of sandy loam where existing trees were growing well
CONNECT
watering regime is manual for the establishment period of 24 months only
initial aluminium tree grates replaced with new alloy style in 2013
clearance pruning of trees two yearly to maintain bus, car, truck clearance
Images:
Primary Case Study image = 2018 view of portion of boulevard, looking south from cnr Adelaide St and Albert St, City Hall side
Other images of related projects within the paper (Treenet Symposium paper link)
Estimated 5% of total project cost of $35m in 1999
Total project included street narrowing, new kerb and channel, services relocations, new footpath paving, street furniture and street resurfacing
TREENET acknowledges the Traditional Owners of country throughout Australia and recognises their continuing connection to land, waters and culture.
We pay our respects to their Elders past, present and emerging.
