I’ve been corresponding with Richard Laurens who is developing a geodesic dome design that rests on earthbags and is covered in earthbags. His original plan was to use rammed tires to support the domes, but now he’s convinced earthbags are more practical. I’m encouraging him to use scoria-filled bags since he plans to build his … Read more
It’s not difficult estimating costs for small houses. Simply add up the number of each main component and multiply times a realistic cost. Then add about 5%-10% extra to cover unforeseen expenses. Use current, local prices for most accurate results. Here’s one article that explains how to estimate the number of bags you’ll need. You … Read more
Using a standard-sized module can simplify the building design process. An even two foot module, for instance, is easy to plot on graph paper. This makes it easier to draw plans and calculate materials and costs. Another benefit of 24” earthbag modules is increased overlap between courses. Many earthbag builders just fold over the ends … Read more
This is just a short summary of my experience teaching an earthbag workshop in Koh Phangan this weekend. We’ll be posting more later because Julien and Hubert, the hosts of the workshop and the driving force behind the project, are doing such outstanding work. They have a number of interesting, photogenic structures on their yoga … Read more
Our earthbag design team is busy creating home and shelter designs, as well as innovative building ideas for the reconstruction effort in Haiti. (See Kelly Hart’s Alternative Bond Beam and Lintel system, for one example.) As you’re probably aware, conventional bond beams and foundations are made with reinforced concrete, but these are costly, labor intensive … Read more
Here’s a simple way to help prevent metal roofing from being blown away. Roofs are typically quite vulnerable to uplift in windy areas. There are commercially available roof hold-downs that bolt trusses and rafters to walls, but I’ve never seen the system described here. It was inspired by hearing all the stories about metal roofing … Read more