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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='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>I would seriously look at using ground up wood waste / wood chips. They can hold their structure for years achieving a number of green roof goals without the green initially. The end product is soil so you can look at it as a green roof in process or simply an urban composting area. Wood chips have been used in biofilters and support a diversity of life. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Greenbuilding [mailto:greenbuilding-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Gennaro Brooks-Church - Eco Brooklyn<br><b>Sent:</b> October-12-13 4:40 AM<br><b>To:</b> Green Building<br><b>Subject:</b> Re: [Greenbuilding] Growing Media Embodied Energy<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>That's very helpful. Thanks John. I agree with your list of priorities. I would add quality of life, for all biota, especially in the city. <o:p></o:p></p><div><p class=MsoNormal>I'm really struggling to find a lower embodied energy light aggregate here in NYC. <o:p></o:p></p></div><div><p class=MsoNormal>It's turning out to be as easy as my other quest- to find a greener option to sheet rock. <br><br>On Friday, October 11, 2013, John Salmen wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>The ESCSI (lightweight aggregate institute put out numbers in 2012). For manufactured materials like expanded shale or other lightweight aggregates the number is same for all - 2.16MBtu/ton or 1.34 mbtu/cubic yard. Carbon dioxide is 350.5 lbs/ton 218lbs/cy.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Sand is about 20,000 Btu per ton and Crushed stone about 30,000 Btu/ton. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Those numbers don’t get it to your building site though.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>I’m doing another green roof now (extensive type) and I’ve switched from varied sedum type mix to just a moss roof (they typically turn into a moss roof anyway and its a more desirable material in my mind). Soil mix is simpler and can be limited to local sandy soils or cement sands (different particle sizes) with some aggregate – limited organics. Less saturated weight. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>For me the main points of a green roof are </span><o:p></o:p></p><p><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>-</span><span style='font-size:7.0pt'> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>To substitute a natural bulk material (soils primarily) for a manufactured sacrificial material (roofing that can withstand the elements</span><o:p></o:p></p><p><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>-</span><span style='font-size:7.0pt'> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>To reduce concentrated peak water flows (preventing erosion, etc.)</span><o:p></o:p></p><p><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>-</span><span style='font-size:7.0pt'> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>To potentially improve the quality of the water by isolating it from typical roof contaminants that it would normally degrade and carry away</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Plants are secondary but they can improve water quality (and air) and moss can be extremely effective for that with a higher probability of not dying.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Water retention (and ultimate weight) is calculated by soil mix and holding capacity. Weight is a huge issue as it puts tremendous loads on a building that have to be provided for (can really upsize a building especially in a seismic area). </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Greenbuilding [mailto:<a href="javascript:_e(%7b%7d,%20'cvml',%20'greenbuilding-bounces@lists.bioenergylists.org');" target="_blank">greenbuilding-bounces@lists.bioenergylists.org</a>] <b>On Behalf Of </b>Gennaro Brooks-Church - Eco Brooklyn<br><b>Sent:</b> October-11-13 10:30 AM<br><b>To:</b> listserv Green Building new<br><b>Subject:</b> [Greenbuilding] Growing Media Embodied Energy</span><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi,<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Does anyone know where I could get a list of the different growing media aggregate embodied energy? Perlite, expanded shale, etc? Trying to see what green roof composition is least embodied energy compared to weight.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br clear=all><o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Gennaro Brooks-Church<br>Director, Eco Brooklyn Inc.<br>Cell: 1 347 244 3016 USA<br><a href="http://www.EcoBrooklyn.com" target="_blank">www.EcoBrooklyn.com</a><br>22 2nd St; Brooklyn, NY 11231<o:p></o:p></p></div></div></div></div></div></div><p class=MsoNormal><br><br>-- <br>Gennaro Brooks-Church, Director<br>Eco Brooklyn<br>347-244-3016<br>22 2nd St, BK NY 11231<br>Sent from Mobile<o:p></o:p></p></div></body></html>