<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Hi André,<div><br><div>At FASBA's site, I found (<a href="http://www.downloads.fasba.de/oeffentlich/pruefzeugnisse/z-23.11-1595(2009).pdf">http://www.downloads.fasba.de/oeffentlich/pruefzeugnisse/z-23.11-1595(2009).pdf</a>) the values 0,052 resp 0,080 for straw bales 'on edge' resp 'laying flat' (scroll down to page 5) that I mentioned before, and this document is dated (and stamped!) Feb 13th, 2009.</div><div>Could anyone confirm the right figures, please??</div><div><br></div><div>Regards and good luck with your numbers!</div><div>Peter<br><div></div></div></div></div><br><div><blockquote type="cite"><div><font class="Apple-style-span" color="#000000"><br></font><br>Peter, this is wrong...<br><br>These are not the official R-values for Germany. The official R-Value for<br>usual strawbales in Germany and Austria is 0,045 W/mK.<br>These are the R-Values for "Baustrohballen", special bales tested under<br>special circumstances.<br>And it is an old but wrong conclusion, that the worse R-values are more<br>realistic. <br>We developed and tested those special strawbales for the building-industry<br>(for prefabricated walls and roofs) in 2008/2009 again in Austria and had<br>much better results in 2 different official testing-institutions: 0,047 W/mK<br>(inluding the 20% addition) ? although there is no test-paper available yet<br>(we are still optimizing...).<br>The difference between "normal" strawbales and "Baustrohballen" is the<br>testing-procedure according to EU-building-codes, but it is possible to<br>press those building-bales for prefabrication in a whole different way, than<br>Dirk did. It's all about pressing the bales in the best way.<br>So we will have CE-certified "Baustrohballen" with nearly the same good<br>R-values as the R-values for normal strawbales in Austria and Germany this<br>summer.<br><br>Best wishes, Herbert<br>-- <br>asbn - austrian strawbale network<br>?sterreichisches Netzwerk f?r Strohballenbau<br>3720 Ravelsbach, Baierdorf 6<br>Email: <a href="mailto:asbn@baubiologie...">asbn@baubiologie...</a><br><a href="http://www.baubiologie.at">http://www.baubiologie.at</a><br><br><blockquote type="cite">Hi Andr?,<br></blockquote><blockquote type="cite">Below the response from Dirk Scharmer of the German Straw Bale<br></blockquote><blockquote type="cite">Building association FASBA, when I asked him to comment on the 0,045<br></blockquote><blockquote type="cite">figure I had found on their site (http://www.downloads.fasba.de/Pb-lambda1.pdf<br></blockquote><blockquote type="cite">). Dirk's basically saying that in Germany the official values to<br></blockquote><blockquote type="cite">calculate with are 0,08 (for bales flat) and 0,052 (for bales on edge)<br></blockquote><blockquote type="cite">and that these figures are 20% higher than the measured ones because<br></blockquote><blockquote type="cite">in Germany there's an obligation (for all natural fibre-based<br></blockquote><blockquote type="cite">insulation) to add 20% to compensate for the fact that the lambda test<br></blockquote><blockquote type="cite">are done on dry material whereas in the real world relative humidity<br></blockquote><blockquote type="cite">of 75-95% in the walls do mean that insulation values decrease. He<br></blockquote><blockquote type="cite">finishes with saying that these official 'calculation' values are not<br></blockquote><blockquote type="cite">as good as the Austrian ones, but more realistic (according to him).<br></blockquote><blockquote type="cite">Hope this helps.<br></blockquote><blockquote type="cite">Regards, Peter<br></blockquote><blockquote type="cite">PS: their values are valid for densities 90-110kg/m3<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">======================================<br></blockquote><blockquote type="cite">Laut der in Deutschland nun geltenden allgemeinen bauaufsichtlichen<br></blockquote><blockquote type="cite">Zulassung Z-23.11-1595<br></blockquote><blockquote type="cite">http://www.downloads.fasba.de/AbZ-Nr.-Z-23.11-1595.pdf gilt ein<br></blockquote><blockquote type="cite">Lambda-Rechenwert Halmrichtung von 0,08 W/mK und quer zur Halmrichtung<br></blockquote><blockquote type="cite">von<br></blockquote><blockquote type="cite">0,052 W/mK. Die jeweils tats?chlich gemessenen Werte liegen 20%<br></blockquote><blockquote type="cite">niedriger,<br></blockquote><blockquote type="cite">weil es in Deutschland einen Sicherheitsaufschlag f?r pflanzliche<br></blockquote><blockquote type="cite">D?mmstoffe<br></blockquote><blockquote type="cite">gibt (es wird im trockenen Zustand gemessen, in der Wand herrschen<br></blockquote><blockquote type="cite">aber ja<br></blockquote><blockquote type="cite">auch mal feuchtere Bedingungen von z.b. 75-95% relative Luftfeuchte, die<br></blockquote><blockquote type="cite">eine tats?chliche Verschlechterung der D?mmwirkung zur Folge haben<br></blockquote><blockquote type="cite">k?nnten).<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Unsere Untersuchungen zeigen ziemlich deutlich, dass die<br></blockquote><blockquote type="cite">W?rmeleitf?higkeit<br></blockquote><blockquote type="cite">in Halmrichtung wirklich h?her ist (also die Ballen liegend schlechter<br></blockquote><blockquote type="cite">d?mmen)<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Die obigen Rechenwerte von 0,052 und 0,08 sind zwar nicht so g?nstig f?r<br></blockquote><blockquote type="cite">uns, wie die ?sterreichischen sind aber meines Erachtens realistischer.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Soweit erstmal?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Gruss<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Dirk Scharmer<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Fachverband Strohballenbau Deutschland e.V.<br></blockquote><blockquote type="cite">Auf der Ruebekuhle 10<br></blockquote><blockquote type="cite">D- 21335 Lueneburg<br></blockquote><blockquote type="cite">Tel. 00 49 4131- 2278649<br></blockquote><blockquote type="cite">Fax. 00 49 4131- 2278648<br></blockquote><blockquote type="cite">Internet: www.fasba.de<br></blockquote><blockquote type="cite">====================================<br></blockquote><blockquote type="cite">____________________________________________________<br></blockquote><blockquote type="cite"> European strawbale building discussion list<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Send all messages to:<br></blockquote><blockquote type="cite">Strawbale@amper....muni.cz<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Archives, subscription options, etc:<br></blockquote><blockquote type="cite">http://amper.ped.muni.cz/mailman/listinfo/strawbale<br></blockquote><blockquote type="cite">____________________________________________________<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><br></div></blockquote></div><br></body></html>