Marie Repara wrote:If you get very frequent rain you may want to put up a big tarp over the site during construction, or build the roof first. As long as it is carefully designed and built (good high foundation, adequate roof overhangs, protective plaster if necessary) it should last a very long time.
However, that doesn't necessarily mean that cob is the most suitable building material for that area. High mass materials like cob can be great at passive cooling, but only if there is some way to cool them down[…] In a dry climate like the high desert, even when daytime temperatures are very hot it still gets cold at night and the heat absorbed by the cob during the day can be discharged. In a hot moist climate where nights are warm, high mass materials lose their passive cooling abilities. You may need to augment with mechanical cooling."[/i]
Dale Hodgins wrote:
Rather than pure cob, some sort of woven bamboo treated with Borax, would give a substrate to build on and some reinforcement.
I had some luck with evaporative cooling in Cebu Philippines. We averaged 80% humidity , so you are likely to have better results.
F Agricola wrote:Also we are 600m/2000f above sea level so temperatures do tend to cool down to below 20°/70F at night. Would that be suitable for high mass ? What can we expect during the day ?
F Agricola wrote:I suggest you first search out the New Zealand and/or Japanese Building Codes for structures in earthquake zones.
Apparently cob structures are okay, but heavily dependent on design characteristics.
We share a similar climate, so ventilation will be paramount. The roof should shed water well away from the foundations and walls e.g. Verandahs all around.
Two storey pole and timber structures are traditionally effective. Coupled with a few modern tweaks they would work well and be relatively cheap.