[CANUFNET] Trees and boulevards

[Julian Dunster]

So are the trees on the left of the image totally constrained on their 
right side with no possibility of roots under the sidewalk? And are the 
trees on the right side of the image totally constrained on all four sides?

My experience would be that the area for the sidewalk / road would have 
been heavily compacted  (Proctor 90% +) and then the road and sidewalk 
laid down. Do you know if the planting pits on the left side were 
extended into the grassed area or did the roots just manage to escape 
somehow?

On Behalf of Dunster and Associates Environmental Consultants Ltd.


Dr. Julian A Dunster R.P.F., R.P.P.., M.C.I.P., ISA Certified Arborist,
ASCA Registered Consulting Arborist # 378,
ISA Tree Risk Assessment Qualified
Honourary Life Member ISA + PNWISA

North American distributor for Rinntech
www.dunster.ca
www.treelaw.info
www.rinntech.info

On Tue/9/28/2021 12:59 PM, Ian Wilson via CANUFNET wrote:
>
> All, we are having a bit of an internal debate about standards for 
> local/residential roads and boulevards.  My observation is that trees 
> that are planted in a boulevard behind a monolithic sidewalk (sidewalk 
> up against the curb and planting area next to the property) generally 
> do better. They have access to more soil volume in the front yard, 
> they get more water and the boulevard is tidier since the homeowner 
> treats it like part of their yard. Also fewer issues with roots 
> lifting sidewalks. Some of our staff prefer the separated treed 
> boulevard, for various reasons. Note, I’m not talking about busier 
> roads where the trees in boulevards help to form a barrier from traffic.
>
> We don’t have a lot of good examples here that directly show a 
> comparison. Does anybody have some photos that might show the 
> performance of trees on one side of the road in a separated boulevard, 
> vs. trees on the other side behind the sidewalk?
>
> Below is an example that doesn’t exactly show this, but it does show 
> the value of soil volume, with the trees on the left side being able 
> to access the lawn area behind the sidewalk, vs. the trees in 
> “coffins” on the right. These are lindens planted at the same time.
>
> *Ian Wilson*
> Infrastructure Operations Manager | City of Kelowna
> 250-469-8842 | iwilson at kelowna.ca <mailto:iwilson at kelowna.ca>
> Submit a request for service on the go | kelowna.ca <http://kelowna.ca/>
>
> /I acknowledge that my workplace is located on the traditional, 
> ancestral, unceded territory of the syilx/Okanagan people//./
>
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