Imitation Stone Walls and Fake Rocks

http://www.youtube.com/watch?v=zR7MhJ5h_c8 You can make textured walls, benches and other objects that look just like stone. This video and the article below show you the basics. I prefer the beauty of natural stone, but this is an option worth considering for special situations. Here’s one example. You could plaster your walls to simulate the color and … Read more

Gypsum and Lime Stabilized Soil (Alker Technology)

Although not necessarily required for earthbag building, stabilizing soil improves water resistance and compressive strength, and speeds drying time. Since 1978, Istanbul Technical University has been researching a technique called alker technology or alker construction. Basically it’s just soil stabilized with lime and calcined gypsum (plaster of Paris). The following summary is taken from their … Read more

Low-Cost Reinforcement of Earthen Houses in Seismic Areas

[Most text quoted from the referenced article shown below.] Vernacular earthen houses located in seismic areas are at risk because of their inherent structural vulnerability. Adobe houses, for instance, are strong in compression but weak in tension. Earthquakes pull adobe houses apart, causing great loss of life and property. However, due to economic reasons, earth … Read more

Woodchip/Light Clay Earthbags

Woodchip/light clay is a traditional building material in Germany and other European countries. It’s typically used as infill between timbers in post and beam construction. I’ve been told that bags of pre-mixed materials are standard items in building supply centers, and blocks can be made to order. The drying time, shrinkage and labor are less … Read more

Earthen Hand Dome in Mali

Scott Howard organized a workshop in Dogon Country, Mali, last winter. He built this unique dome with the help of workshop participants and some of the villagers there. The majority of the structure was completed during the two week-long workshop. It is a catenary arc about 16.5 feet tall with a loft. Serving as a … Read more

Lowest Cost Plaster Mesh

Often plaster mesh is not required, but when it is needed it’s useful to know which type of plaster mesh is most affordable – chicken wire, plastic mesh or fishing net. I think stucco mesh is overkill and so it’s not covered here, although it’s often required by code and so you’ll have to plan … Read more