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<p>Ecoraster <a
href="https://www.ecorastergrid.com/?gclid=EAIaIQobChMI683kwYnD6gIV4gl9Ch0bbArzEAAYASAAEgLYBfD_BwE">https://www.ecorastergrid.com/?gclid=EAIaIQobChMI683kwYnD6gIV4gl9Ch0bbArzEAAYASAAEgLYBfD_BwE</a>
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<p>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). <br>
</p>
<pre class="moz-signature" cols="72">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
<a class="moz-txt-link-abbreviated" href="http://www.dunster.ca">www.dunster.ca</a>
<a class="moz-txt-link-abbreviated" href="http://www.treelaw.info">www.treelaw.info</a>
<a class="moz-txt-link-abbreviated" href="http://www.rinntech.info">www.rinntech.info</a>
</pre>
<div class="moz-cite-prefix">On Fri/7/10/2020 9:01 AM, Geri Poisson
via CANUFNET wrote:<br>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><i><span
style="font-size:10.0pt;color:#0163A5;mso-fareast-language:EN-US">Geri
Poisson, B.A. (Hons.), Dipl. Eco. Restoration /
Terrestrial Ecologist, ISA Certified Arborist<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;color:#0163A5;text-transform:uppercase;mso-fareast-language:EN-US">Beacon
Environmental<o:p></o:p></span></b></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;color:#0163A5;mso-fareast-language:EN-US">6
Cumberland St., Barrie, ON L4N 2P4<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;color:#0163A5;mso-fareast-language:EN-US">T)
705.999.4935 x249 C) 705.828.1196<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><a
href="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"
moz-do-not-send="true"><span
style="font-size:9.0pt;color:#0163A5">www.beaconenviro.com</span></a></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="EN-US">To protect our staff,
families, clients and the greater community all Beacon
staff are working remotely. We will continue to provide
timely communications
<i>via</i> email and telephone and are committed to
providing the highest level of service possible during
this challenging time.
<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
lang="EN-US"> CANUFNET
<a class="moz-txt-link-rfc2396E" href="mailto:canufnet-bounces@list.web.net"><canufnet-bounces@list.web.net></a>
<b>On Behalf Of </b>Astrid Nielsen via CANUFNET<br>
<b>Sent:</b> July 10, 2020 11:15 AM<br>
<b>To:</b> Canadian Urban Forest Network
<a class="moz-txt-link-rfc2396E" href="mailto:canufnet@list.web.net"><canufnet@list.web.net></a><br>
<b>Cc:</b> Astrid Nielsen
<a class="moz-txt-link-rfc2396E" href="mailto:astrid.nielsen@dendronforestry.ca"><astrid.nielsen@dendronforestry.ca></a><br>
<b>Subject:</b> [CANUFNET] Constructing Driveways within
Critical Root Zones<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hello Canufnet members,<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">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. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">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.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Astrid<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif">______________________________________</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span
style="font-size:12.0pt;font-family:"Verdana",sans-serif">Astrid
Nielsen, </span></b><span
style="font-family:"Verdana",sans-serif">MFC</span><o:p></o:p></p>
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<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Verdana",sans-serif">Ontario
Registered
Professional
Forester</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">ISA
Certified</span><span
style="font-size:12.0pt;font-family:"Verdana",sans-serif"> Arborist®</span><o:p></o:p></p>
</div>
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<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Verdana",sans-serif">ISA
Tree Risk
Assessment
Qualified</span><o:p></o:p></p>
</div>
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<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><a
href="mailto:astrid.nielsen@dendronforestry.ca" target="_blank"
moz-do-not-send="true"><span
style="font-size:9.5pt;font-family:"Verdana",sans-serif">astrid.nielsen@dendronforestry.ca</span></a><o:p></o:p></p>
</div>
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<div>
<div>
<p
class="MsoNormal"><span
style="font-family:"Verdana",sans-serif">+1.613.805.WOOD
(9663)</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span
style="font-family:"Verdana",sans-serif"><a
href="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"
target="_blank" moz-do-not-send="true">www.dendronforestry</a></span> <o:p></o:p></p>
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