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[Cob] Rammed earth in ICF Forms??M3 mliiiwit at gmail.comTue Sep 20 20:25:05 CDT 2011
I haven't been around ICFs, but do you think they're strong enough to take the pounding? Poured concrete can exert a lot of pressure on forms, but you don't have to pound it like rammed earth. Just a relatively gentle loading compared to rammed earth. On 9/20/2011 2:00 PM, coblist-request at deatech.com wrote: > Send Coblist mailing list submissions to > coblist at deatech.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.deatech.com/mailman/listinfo/coblist > or, via email, send a message with subject or body 'help' to > coblist-request at deatech.com > > You can reach the person managing the list at > coblist-owner at deatech.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Coblist digest..." > > > Today's Topics: > > 1. Rammed earth in ICF Forms?? (Sky Orndoff) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 19 Sep 2011 22:37:02 -0700 (PDT) > From: Sky Orndoff<skyorndoff at yahoo.com> > To: "coblist at deatech.com"<coblist at deatech.com> > Subject: [Cob] Rammed earth in ICF Forms?? > Message-ID: > <1316497022.21982.YahooMailNeo at web161213.mail.bf1.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > Hey Everyone! > > I have been working on a conventional build alongside my cobwood project, and have come to really like Insulated Concrete Forms (ICFs) for their speedy, structural assemblage of a nice simple building (google superform).? I also like that they can directly hold plaster, and I like their thermal mass--insulation hybrid.? And I like how accepted they are with building officials.? What I don't like about the ICFs are the styrofoam itself and the concrete and those things' negative effects on the environment.? However, the durable, quite insulative, super-easy-to-construct nature of the forms makes them maybe worth it, especially if we can do away with the concrete. > > > Here in Helena, Montana, it's quite dry, and horribly cold in the winter, and so I was wondering what you all had to say about the idea of filling ICFs with Rammed Earth.? As far as I know, Rammed Earth has approximately the same compressive strength as Concrete and similar (very little) tensile strength.? Its shatter strength is lower, I believe, than Concrete, and it can fail if it gets and stays wet.? Will I be constantly fighting moisture issues? Do you expect failure? Horrible and hideous catastrophic results?? Or did I hit on something smart? > > > What I'd like from you all are ideas on testing/how to monitor moisture levels inside the forms, ideas on how to avoid moisture penetrating and accumulating inside the walls, and possibly ideas on ways to back up rammed-earth's strength. > > What do you think?? Am I off my rocker, am I too apologetic to the constructionary-industrial complex, or is this an idea worth exploring? > > Thanks a lot for your feedback! > > Sky > > www.earthartbuild.wordpress.com > > > ------------------------------ > > _______________________________________________ > Coblist mailing list > Coblist at deatech.com > http://www.deatech.com/mailman/listinfo/coblist > > > End of Coblist Digest, Vol 9, Issue 120 > ***************************************
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