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body { font-family: Calibri; font-size: 11pt; }</style></head><body><div>Lars</div><div><br /></div><div>We have also used these floors in many projects but have never had to document to the level that appears to be requested of you here. In one jurisdiction where we are forced to used interior shear walls instead of the resistance from exterior plastered walls, we pour very small strip footings of concrete below the shear walls that tie into our concrete grade beam below the exterior walls. Although this does use more concrete, it is very minimal and can be an easy way to satisfy a building official. See a couple of details below.</div>
<div><br /></div><div id="signature_old"><div id="x6177c90bca02481"><div id="x3b2b9542c1294607b8daffd7fc9147b2"><div class="" style="word-wrap:break-word"><div><div class=""><div class=""><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap: break-word;"><div class="" style="word-wrap:break-word"><div><font face="Calibri"><span class="" style="float: none; display: inline !important;"><span class="">Dodson Harper, P.E. S.E.</span></span>
</font><div class=""><span class=""><font class="" face="Calibri">Principal</font></span></div>
<div class="">
<div class="" style="orphans:2; widows:2"><span class="" style="font-size:20px"><font color="#d84942" class="" face="Calibri">REG</font></span></div>
<div class="" style="orphans:2; widows:2"><font class="" color="#d84942" face="Calibri"><span class="" style="font-size:14px">Resource Engineering Group</span></font></div>
</div>
<div class=""><font class="" face="Calibri">Direct: 970.713.0986</font></div>
<div class=""><font face="Calibri">Cell: 970.209.3938</font></div>
<div class=""><font face="Calibri"><a href="mailto:dodson@reginc.com" class="">dodson@reginc.com</a><br class="" />
<a href="http://www.reginc.com" class="">www.reginc.com</a></font></div></div><div class=""><br /></div><div class=""><img src="cid:em52841bf3-4990-485b-9358-217f5260a840@desktop-7pjaj0b" border="0" width="508" height="480" /><img src="cid:em27634263-5806-4970-b8ea-d2c2ff0abe74@desktop-7pjaj0b" border="0" width="640" height="453" style="font-size: 12pt;" /></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div><br /></div>
<div>------ Original Message ------</div>
<div>From: "Global Straw Building Network" <<a href="mailto:gsbn@sustainablesources.com">gsbn@sustainablesources.com</a>></div>
<div>To: <a href="mailto:gsbn@lists.sustainablesources.com">gsbn@lists.sustainablesources.com</a></div>
<div>Sent: 1/22/2020 10:52:20 PM</div>
<div>Subject: [Gsbn] Fwd: Strength parameters for earthen slabs ?</div><div><br /></div>
<div id="x37e08e0d56924f9"><blockquote cite="CAJoe8oYmmbWW3VfRqU4fyZGe7wVwwNQvc8W8P=4v5G=ES+ht_A@mail.gmail.com" type="cite" class="cite2">
<div dir="ltr"><br /><br /><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br />From: <b class="gmail_sendername" dir="auto">Lars Keller</b> <span dir="auto"><<a href="mailto:larskeller@gmail.com">larskeller@gmail.com</a>></span><br /><span style="color:rgb(255,0,0)">Date: Wed, Jan 22, 2020 at 6:09 AM</span><br />Subject: Strength parameters for earthen slabs ?<br />To: Global Straw Building Network (private, with public archives) <<a href="mailto:GSBN@sustainablesources.com">GSBN@sustainablesources.com</a>><br /></div><br /><br /><div></div><div><div class="gmail_quote"><div><div class="gmail_quote"><div link="#0563C1" vlink="#954F72" lang="DA"><div><b>Help wanted regarding strength parameters for earthen slabs.</b></div><div dir="auto"><br /></div><div dir="auto">We are trying to get permission for a family house where instead of a concrete slab we will use a local product consisting of 0-8mm sand particles with clay.</div><div dir="auto"><br /></div><div dir="auto">We have used it in many buildings, it works, but we have never documented it officially.</div><div dir="auto"><br /></div><div dir="auto">I have asked the engineer what exactly he needs to sign this off in a legal manner.</div><div dir="auto"><br /></div><div dir="auto">Can anyone help ?</div><div dir="auto"><b>Best, </b>Lars Keller</div><div dir="auto"><br /></div><div dir="auto">PS: here is a link to the analysis of the earthproduct we use:</div><div dir="auto"><br /></div><div dir="auto"><div><a href="https://smallplanetdk-my.sharepoint.com/:b:/g/personal/kontakt_smallplanet_dk/Eek52hjfts5GsgBu7gU4PBYBGfg4JE9r8T7RHoxcsuqyhw?e=5etIzb">https://smallplanetdk-my.sharepoint.com/:b:/g/personal/kontakt_smallplanet_dk/Eek52hjfts5GsgBu7gU4PBYBGfg4JE9r8T7RHoxcsuqyhw?e=5etIzb</a></div><br /></div><div dir="auto">- - -</div><div dir="auto"><br /></div><div dir="auto">Earthen floors<br />
<p class="MsoNormal"><span lang="EN-US">A single-family house is designed where the usual concrete slab is replaced with an earthen (clay) floor laid on top of a layer of crushed seashells used as insulation. Our main issue is how well this earthen floor can
be used to transfer horizontal wind forces, as these are usually transferred by a concrete slab.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Regarding this we have a couple of questions:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">What strength parameters do we have for these kinds of floors? - Such as the characteristic compressive strength, Youngs’ modulus etc.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Can the earthen floor slab be assumed to work as a diaphragm like a concrete slab, or is it unable to transfer horizontal forces?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">We have provided a sketch of what we mean by the horizontal wind being transferred through the slab<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">If you have any questions or there are any unclarity in our questions, please call at
<span style="color:red">40138786.</span><u></u><u></u></span></p>
<p class="MsoNormal"><img src="cid:16fcd0ea9334cd34f0f1" style="width:450px;max-width:100%" /><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#44546a"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:#44546a"><u></u> <u></u></span></p>
<div dir="auto">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Med venlig hilsen</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:gray">
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#44546a">/ Kind Regards</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:gray"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:gray"> </span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:gray"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Arial",sans-serif;color:#58595b">Jakob Keller</span><span style="font-family:"Arial",sans-serif;color:gray">
<br />
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<br />
</span></b><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black" lang="DE">M: +45 2297 7222</span></b><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:gray" lang="DE">
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</div></div>-- <br /><div dir="ltr" data-smartmail="gmail_signature">Small Planet smba<br />En sundere, smukkere og mere robust fremtid - sammen.<br /><br />T: 20240505<br />M: <a href="mailto:kontakt@smallplanet.dk">kontakt@smallplanet.dk</a><br />W: <a href="http://www.smallplanet.dk">www.smallplanet.dk</a><br />CVR 34725403<br /><br /><a href="https://www.google.com/maps/search/Friland+12B+8410+R%C3%B8nde+Danmark?entry=gmail&source=g">Friland 12B</a><br /><a href="https://www.google.com/maps/search/Friland+12B+8410+R%C3%B8nde+Danmark?entry=gmail&source=g">8410 Rønde</a><br /><a href="https://www.google.com/maps/search/Friland+12B+8410+R%C3%B8nde+Danmark?entry=gmail&source=g">Danmark</a><br />--</div>
</div></div>-- <br /><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><b style="font-family:arial;font-size:small">Kontakt-info</b><span style="font-family:arial;font-size:small"><br /></span></div><div dir="ltr"><span style="font-family:arial;font-size:small">skype</span><span style="font-family:arial;font-size:small"><br /></span></div><div dir="ltr"><span style="font-family:arial;font-size:small">jomorandin</span><span style="font-family:arial;font-size:small"></span><span style="font-family:arial;font-size:small"><br /></span></div><div dir="ltr"><span style="font-family:arial;font-size:small">lars.friland</span></div><div dir="ltr"><a href="mailto:jomorandin@gmail.com" style="font-family:arial;font-size:small;color:rgb(17,85,204)">jomorandin@gmail.com</a><span style="font-family:arial;font-size:small"></span></div><div dir="ltr"><a href="mailto:larskeller@gmail.com" style="font-family:arial;font-size:small;color:rgb(17,85,204)">larskeller@gmail.com</a><h1><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">Home </span><a value="+4586680505" style="font-family:arial;font-size:small;color:rgb(17,85,204)">+45 8668 0505</a></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">Jo </span><a value="+4523900924" style="font-family:arial;font-size:small;color:rgb(17,85,204)">+45 2390 0924</a><span style="font-family:arial;font-size:small"> (mobile/handy)</span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">Lars </span><a value="+4520240505" style="font-family:arial;font-size:small;color:rgb(17,85,204)">+45 2024 0505</a><span style="font-family:arial;font-size:small"> (mobile/handy)</span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small"><br /></span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">Jo Morandin, Jamilla, Asger & Lars Keller</span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">Friland 12 B</span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">8410 Rønde</span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">Danmark</span></div><div style="font-size:13px;font-weight:normal"><span style="font-family:arial;font-size:small">---</span></div></h1></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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