I want to use as little as possible mainly because it's not cheap, not because it uses lots energy to produce. I guess I have a slightly different opinion tho we do agree on a lot of points about OPC. They seem simple because they are simple, and perhaps that is their downfall for enduring architecture. As a professional builder in the natural-traditional modalities as well as mainstream methods, I have seen a number of these "quick wall" systems fail. I am not trying to dissuade, nevertheless, as a permaculture group.opc is usually not encouraged because of the environmental impact of the industry and the general poor nature of modern concretes in general. In his calculator as I recall he shows the compensation for the variation (about a 1/4 of inch as I recall) to compensate for the alternating courses final length. I don't believe he actually advocates corner blocks. I have seen some information on "dry-stacked's " technique and I believe he alternates the orientation of each course at the corner. However, side by side in a seismic zone, I would still have more confidence in CMU construction than stick built. As far as seismic considerations, you may be right. Of course, a bond beam at the top is used which locks it all togther fairly well. ![]() ![]() Rhys Firth wrote:I don't think those houses would even pass building consent standards here!Īctually, this techinque is sanctioned under the IBC (I don't have the chapter refernce with me at work.) Dry stack CMU is permittable, with the constrained that no more than 200 square feet without reinforcement or piller built into the wall.
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