[CANUFNET] Constructing Driveways within Critical Root Zones

[Julian Dunster]

Ecoraster 
https://www.ecorastergrid.com/?gclid=EAIaIQobChMI683kwYnD6gIV4gl9Ch0bbArzEAAYASAAEgLYBfD_BwE 


The images show it on top of a geogrid such as Jim and I suggested. Do 
not try to use plastic fencing as that is not designed for triaxial 
loading (loads spreading outwards or downwards).

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 Fri/7/10/2020 9:01 AM, Geri Poisson via CANUFNET wrote:
>
> We had a project where the client wanted to raise the grade over the 
> root zone of a 100+ cm DBH White Oak. The city accepted a plan to use 
> a plastic grid filled with gravel (see attached) laid over the 
> existing grade to avoid compaction and allow infiltrations.  I’m not 
> sure that it has been constructed yet, so I can’t speak to how 
> successful the method will be in protecting the tree’s health and 
> survival, but the city accepted it.
>
> */Geri Poisson, B.A. (Hons.), Dipl. Eco. Restoration / Terrestrial 
> Ecologist, ISA Certified Arborist/*
>
> *Beacon Environmental*
>
> 6 Cumberland St., Barrie, ON L4N 2P4
>
> T) 705.999.4935 x249  C) 705.828.1196
>
> www.beaconenviro.com 
> <https://can01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.beaconenviro.com&data=02%7C01%7Cgpoisson%40beaconenviro.com%7Cee60e28cb2064cd8224108d7798fcf4f%7C7ad3048f5c1d4bc1b2a671cdb2d9e8f1%7C0%7C0%7C637111530868126573&sdata=00ounYtxds2VsraFAcE6Q%2BdsQtjoXOcd0oTUS0ol1LI%3D&reserved=0>
>
> *To protect our staff, families, clients and the greater community all 
> Beacon staff are working remotely. We will continue to provide timely 
> communications /via/ email and telephone and are committed to 
> providing the highest level of service possible during this 
> challenging time. *
>
> *From:*CANUFNET <canufnet-bounces at list.web.net> *On Behalf Of *Astrid 
> Nielsen via CANUFNET
> *Sent:* July 10, 2020 11:15 AM
> *To:* Canadian Urban Forest Network <canufnet at list.web.net>
> *Cc:* Astrid Nielsen <astrid.nielsen at dendronforestry.ca>
> *Subject:* [CANUFNET] Constructing Driveways within Critical Root Zones
>
> Hello Canufnet members,
>
> I have a client that is building two homes on an infill lot where 
> there is a very large (106 cm), healthy silver maple. He is very 
> willing to explore different options for working around the tree that 
> would cause minimum disruption to the roots.
>
> Does anyone have examples of building driveways within the critical 
> root zones of large trees that have managed to prevent significant 
> root damage and tree decline? Specifically, he is considering a type 
> of elevated driveway that would not require the severing of roots or 
> significant soil compaction, and dissipate the pressure through posts. 
> Although the posts would cause some root damage, it would be 
> significantly less than excavation for a standard driveway. If anyone 
> has examples of this type of engineering, I would be grateful if you 
> could share it with me.
>
> Thank you,
>
> Astrid
>
> ______________________________________
>
> *Astrid Nielsen, *MFC
>
> Ontario Registered Professional Forester
>
> ISA Certified Arborist®
>
> ISA Tree Risk Assessment Qualified
>
> astrid.nielsen at dendronforestry.ca 
> <mailto:astrid.nielsen at dendronforestry.ca>
>
> +1.613.805.WOOD (9663)
>
> www.dendronforestry 
> <https://can01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.dendronforestry.ca%2F&data=02%7C01%7Cgpoisson%40beaconenviro.com%7C16b372ce5e9f451f789308d824e59096%7C7ad3048f5c1d4bc1b2a671cdb2d9e8f1%7C0%7C0%7C637299915675762450&sdata=xsWmVHkOi7KAUCiZIMwKgEOZpqTRxKp7isUvikFRFYM%3D&reserved=0> 
>
>
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