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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D;mso-fareast-language:EN-US'>And, soft sidewalks have the additional benefit that they’re much easier on people’s feet and knees that all the concrete we walk on! Talk to any physiotherapist and they’ll tell you that all the even, flat surfaces we walk on are really bad for our feet. Uneven surfaces, like we find in nature, are much better as we use more foot muscles and the feet more in more directions. Nature always knows!<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D;mso-fareast-language:EN-US'>Charlotte Young<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>~~~~~<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Get quarterly tip sheets on how to build strong organizations and work collaboratively for greater effect. Sign up here: <a href="http://envision-synergy.net/subscribe/"><span style='color:#0563C1'>http://envision-synergy.net/subscribe/</span></a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>~~~~~<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Charlotte Young, Ph.D., Facilitator~Graphic Recorder~Evaluator<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>envision SYNERGY ~ environmental vision together <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Catalyzing collaboration for a healthy planet – across sectors, silos and skill sets<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>120 Dewhurst Blvd. Toronto ON M4J 3J6<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>envision-synergy.net ~ pictureyourthoughts.com<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>416-778-4713; <a href="mailto:charlotte@envision-synergy.net"><span style='color:#0563C1'>charlotte@envision-synergy.net</span></a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>~~~~~<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> CANUFNET [mailto:canufnet-bounces@list.web.net] <b>On Behalf Of </b>Ian Wilson via CANUFNET<br><b>Sent:</b> July 13, 2020 5:17 PM<br><b>To:</b> 'Canadian Urban Forest Network' <canufnet@list.web.net><br><b>Cc:</b> Ian Wilson <IWilson@kelowna.ca><br><b>Subject:</b> Re: [CANUFNET] Constructing Driveways within Critical Root Zones<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Not a driveway example but I have an example of construction of a new sidewalk across a critical root zone.<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><span style='mso-fareast-language:EN-US'>Approx. 12 years ago we installed the “Rubber Sidewalks” product in Kelowna, BC. There was a new sidewalk being installed next to a boulevard of mature green ash trees. There was no existing sidewalk, just lawn. We got the construction crew to only remove minimal turf and organics from the surface and avoid cutting any roots. The grade was built up (and tied in to an older concrete sidewalk with gentle ramps). The large rubber panels were placed over a bed of sand. The sidewalk is still looking good today and the trees are healthy. There has been a bit of mild bending of the rubber panels due to roots but no tripping issues, and small snow plows drive across the surface in winter.<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><span style='mso-fareast-language:EN-US'>If we did this over again, I think I would have used a coarse structural gravel underneath the rubber sidewalk (no fines). Basically a structural soil but no added compost – to help discourage root growth directly under the panels.<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><span style='mso-fareast-language:EN-US'>Ian Wilson<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>City of Kelowna<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> CANUFNET <<a href="mailto:canufnet-bounces@list.web.net">canufnet-bounces@list.web.net</a>> <b>On Behalf Of </b>Mark Carroll via CANUFNET<br><b>Sent:</b> July 13, 2020 12:04 PM<br><b>To:</b> Canadian Urban Forest Network <<a href="mailto:canufnet@list.web.net">canufnet@list.web.net</a>><br><b>Cc:</b> Mark Carroll <<a href="mailto:environment1st@rogers.com">environment1st@rogers.com</a>><br><b>Subject:</b> Re: [CANUFNET] Constructing Driveways within Critical Root Zones<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div style='border:solid #9C6500 1.0pt;padding:2.0pt 2.0pt 2.0pt 2.0pt'><p class=MsoNormal style='line-height:13.0pt;background:#A00000'><b><span style='color:white'>CAUTION:</span></b><span style='color:white'> External email - Check before you click!<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'>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.<o:p></o:p></p><div id="ymail_android_signature"><p class=MsoNormal style='margin-bottom:12.0pt'>Mark Carroll<br>ISA Certified Arborist, Qualified Arborist Tech<br>All around nice guy<br>Taking our environment first<br>Thanks for connecting...<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><blockquote style='margin-left:0cm;margin-top:5.0pt;margin-right:0cm;margin-bottom:15.0pt'><div><div><p class=MsoNormal><span style='font-family:"Arial",sans-serif;color:#6D00F6'>On Fri., 10 Jul. 2020 at 11:26 a.m., Astrid Nielsen via CANUFNET<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Arial",sans-serif;color:#6D00F6'><<a href="mailto:canufnet@list.web.net">canufnet@list.web.net</a>> wrote:<o:p></o:p></span></p></div></div><div style='border:none;border-left:solid #6D00F6 1.0pt;padding:0cm 0cm 0cm 15.0pt;margin-top:7.5pt'><div id=yiv0561002500><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></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><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></div><div><p class=MsoNormal><o:p> </o:p></p></div><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></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>______________________________________</span> <o:p></o:p></p><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><div><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></div><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><div><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><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="mailto:astrid.nielsen@dendronforestry.ca" target="_blank"><span style='font-size:9.5pt;font-family:"Verdana",sans-serif'>astrid.nielsen@dendronforestry.ca</span></a><o:p></o:p></p></div><div><div><div><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'>+1.613.805.WOOD (9663)</span><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><span style='font-family:"Verdana",sans-serif'><a href="http://www.dendronforestry.ca" target="_blank">www.dendronforestry</a></span> <o:p></o:p></p></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></blockquote></div></div></body></html>