<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.apple-converted-space
{mso-style-name:apple-converted-space;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>One of the products is only 8.5 cm deep. You can scrape the organic layer to maybe 5 cm depth and then install them and surface on top of that.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have attached a little more information for those who might be interested. This approach is also being used extensively in the Netherlands for blue green installations. There are quite a few Canadian installations of this approach as well.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cheers,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Philip<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><b><span lang=EN-US>Philip van Wassenaer, B.SC., MFC<o:p></o:p></span></b></p><p class=MsoNormal>Urban Forest Innovations Inc.<o:p></o:p></p><p class=MsoNormal>1331 Northaven Drive<o:p></o:p></p><p class=MsoNormal>Mississauga ON L5G 4E8<o:p></o:p></p><p class=MsoNormal><span lang=EN-US>Tel: (905) 274-1022<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Cell: (647) 221-3046<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Fax: (905) 274-2170<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><img width=153 height=73 style='width:1.5937in;height:.7604in' id="Picture_x0020_2" src="cid:image001.jpg@01D74BF2.E36B5530" alt="UFI new logo very small"><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'><a href="http://www.urbanforestinnovations.com/">www.urbanforestinnovations.com</a><o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></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 <canufnet-bounces@list.web.net> <b>On Behalf Of </b>Naomi Zurcher via CANUFNET<br><b>Sent:</b> May 18, 2021 6:18 AM<br><b>To:</b> Canadian Urban Forest Network <canufnet@list.web.net><br><b>Cc:</b> Naomi Zurcher <treerap@sprintmail.com><br><b>Subject:</b> Re: [CANUFNET] Floating sidewalks or slabs over tree roots<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Philip:<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Since these are existing roots, how are the Permavoid modules being incorporated into an existing rhizosphere. I know Silva Cells and I have never seen a successful retrofit using them so I am wondering how this is being managed with Permavoid?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Naomi Zürcher<o:p></o:p></p></div><div><p class=MsoNormal>Arbor Aegis<o:p></o:p></p></div><div><p class=MsoNormal>Urban Forester, Consulting Arborist<o:p></o:p></p><div><p class=MsoNormal><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>On May 17, 2021, at 2:59 PM, Philip van Wassenaer via CANUFNET <<a href="mailto:canufnet@list.web.net">canufnet@list.web.net</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Crispin,<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Depending on the intensity of use, this is an excellent product for bridging over existing roots.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal><a href="https://abtdrains.com/products/low-impact-development/permavoid/"><span style='color:#0563C1'>https://abtdrains.com/products/low-impact-development/permavoid/</span></a><o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>happy to discuss more with you if you wish.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><div><p class=MsoNormal><b><span lang=EN-US>Philip van Wassenaer, B.SC., MFC</span></b><o:p></o:p></p></div><div><p class=MsoNormal>Urban Forest Innovations Inc.<o:p></o:p></p></div><div><p class=MsoNormal>1331 Northaven Drive<o:p></o:p></p></div><div><p class=MsoNormal>Mississauga ON L5G 4E8<o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US>Tel: (905) 274-1022</span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US>Cell: (647) 221-3046</span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US>Fax: (905) 274-2170</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#1F497D'><img border=0 width=153 height=73 style='width:1.5937in;height:.7604in' id="Picture_x0020_1" src="cid:image001.jpg@01D74BF2.E36B5530" alt="UFI new logo very small"></span><o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#1F497D'><a href="http://www.urbanforestinnovations.com/">www.urbanforestinnovations.com</a></span><o:p></o:p></p></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><div><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span class=apple-converted-space><span lang=EN-US> </span></span><span lang=EN-US>CANUFNET <<a href="mailto:canufnet-bounces@list.web.net"><span style='color:#0563C1'>canufnet-bounces@list.web.net</span></a>><span class=apple-converted-space> </span><b>On Behalf Of<span class=apple-converted-space> </span></b>Wood, Crispin via CANUFNET<br><b>Sent:</b><span class=apple-converted-space> </span>May 14, 2021 1:38 PM<br><b>To:</b><span class=apple-converted-space> </span>Canadian Urban Forest Network <<a href="mailto:canufnet@list.web.net"><span style='color:#0563C1'>canufnet@list.web.net</span></a>><br><b>Cc:</b><span class=apple-converted-space> </span>Wood, Crispin <<a href="mailto:woodc@halifax.ca"><span style='color:#0563C1'>woodc@halifax.ca</span></a>>; Osmond, Kevin <<a href="mailto:osmondk@halifax.ca"><span style='color:#0563C1'>osmondk@halifax.ca</span></a>><br><b>Subject:</b><span class=apple-converted-space> </span>[CANUFNET] Floating sidewalks or slabs over tree roots</span><o:p></o:p></p></div></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US>Hello Network,</span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US>I was wondering if any one might have a standard detail they would be willing to share for either a reinforced floating concrete sidewalk or floating concrete slab (e.g. driveway pad) for use in situations of construction or reconstruction where near surface tree roots exists and limited excavation is preferred.<span class=apple-converted-space> </span></span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US>Any help is appreciated</span><o:p></o:p></p></div><div><p class=MsoNormal><span lang=EN-US> </span><o:p></o:p></p></div><div><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial",sans-serif;color:#00558C;text-transform:uppercase'>CRISPIN WOOD, MSFM</span></b><o:p></o:p></p></div><div><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD;text-transform:uppercase'>SUPERINTENDENT OF URBAN FORESTRY</span></b><o:p></o:p></p></div><div><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD;text-transform:uppercase'>ROAD OPERATIONS & CONSTRUCTION</span></b><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD;text-transform:uppercase'>TRANSPORTATION & PUBLIC WORKS</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#8BB8E8;text-transform:uppercase'>(902) 225-2774<span class=apple-converted-space> </span></span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#8BB8E8;text-transform:uppercase'> </span><o:p></o:p></p></div><div><p class=MsoNormal><b><span style='font-size:17.5pt;font-family:"Arial",sans-serif;color:#00558C'>HΛLIFΛX</span></b><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD;text-transform:uppercase'>PO BOX 1749</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD;text-transform:uppercase'>HALIFAX</span><span class=apple-converted-space><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D;text-transform:uppercase'> </span></span><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD;text-transform:uppercase'>NS B3J 3A5</span><span style='font-size:8.0pt;font-family:"Arial",sans-serif;color:#6DA0CD'><br></span><span lang=EN-US><a href="http://www.halifax.ca/" target="_blank"><span lang=EN-CA style='font-size:9.0pt;font-family:"Arial",sans-serif;color:#00558C'>halifax.ca</span></a></span><o:p></o:p></p></div></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>