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<p>I like my peers but have never engineered them :)<br>
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<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 Mon/7/13/2020 12:03 PM, Mark Carroll
via CANUFNET wrote:<br>
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<blockquote type="cite"
cite="mid:1955492533.1012139.1594667016194@mail.yahoo.com">
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I don't have an example of a driveway being elevated, but there
are examples in the City of Toronto where the house was built this
way. The addition was built on stilts to preserve the roots. A
full concrete pad was elevated and the addition was built on top.
It is not uncommon for this to be done. England has made some good
practices for preserving their trees. They have actually built
basements under the roots of trees. There are engineered peers
that can be drilled down to the 2.5 to 3 meter depth that will
support the needs of a carrying load to build a driveway and keep
the root zones intact.<br>
<br>
<div id="ymail_android_signature">Mark Carroll<br>
ISA Certified Arborist, Qualified Arborist Tech<br>
All around nice guy<br>
Taking our environment first<br>
Thanks for connecting...<br>
<br>
</div>
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<div>On Fri., 10 Jul. 2020 at 11:26 a.m., Astrid Nielsen via
CANUFNET</div>
<div><a class="moz-txt-link-rfc2396E" href="mailto:canufnet@list.web.net"><canufnet@list.web.net></a> wrote:</div>
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border-left: 1px solid #6D00F6;">
<div id="yiv0561002500">
<div dir="ltr">Hello Canufnet members,
<div><br>
</div>
<div>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. </div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>Thank you,</div>
<div><br>
</div>
<div>Astrid</div>
<div><span style="font-family:verdana, sans-serif;"><br>
</span></div>
<div><span style="font-family:verdana, sans-serif;">______________________________________</span>
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<div dir="ltr"><font
face="verdana,
sans-serif"><span
style="font-size:small;"><b>Astrid Nielsen, </b></span></font><span
style="font-family:verdana,
sans-serif;">MFC</span></div>
<div><font
face="verdana,
sans-serif"><span
style="font-size:small;">Ontario Registered Professional Forester</span></font></div>
<div dir="ltr"><font
face="verdana,
sans-serif"><font
size="2">ISA
Certified</font><span
style="font-size:small;"> Arborist®</span></font></div>
<div><font
face="verdana,
sans-serif"><span
style="font-size:small;">ISA Tree Risk Assessment Qualified</span></font></div>
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face="verdana,
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style="font-size:small;"><br>
</span></font></div>
<div><a
rel="nofollow"
ymailto="mailto:astrid.nielsen@dendronforestry.ca"
target="_blank"
href="mailto:astrid.nielsen@dendronforestry.ca"
style="font-family:verdana,
sans-serif;font-size:12.8px;" moz-do-not-send="true">astrid.nielsen@dendronforestry.ca</a><br>
</div>
<div dir="ltr">
<div>
<div><font
face="verdana,
sans-serif">+1.613.805.WOOD
(9663)</font></div>
</div>
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face="verdana,
sans-serif"><br>
</font></div>
<div><font
face="verdana,
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rel="nofollow"
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moz-do-not-send="true">www.dendronforestry</a></font> </div>
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