Sat 10 Aug 2013
Posted by Lisa
MicroHouse Construction Manager Chris Reinhart is moving forward on the OSE Microhouse design. The Microhouse is a modular, low-cost, simple-but-comfortable, Compressed Earth Brick (CEB) house design. It is designed such that the different parts of the house can be build in parallel – walls, utility modules, roof sections, windows and doors, and others. We are approaching this design from a “Housing Construction Set” approach – where we are developing basic, interoperable, scalable, modifiable building modules. We are experimenting with the limits of earth housing as a building method comparable in cost and build time to standard stick-frame construction – while allowing for much longer building lifetime.
A two-module design has emerged, featuring a courtyard in between. One 12′ x 12′ unit will be devoted to work and sleeping space (possibly a sleeping loft), while the other will house a kitchen, bath, and dining space.
The Microhouse’s passive solar design for direct solar gain can be built using compressed earth bricks produced by our CEB Press. The building collects heat from its southern exposure without losing it on the other three sides.
The bricks will be configured to create thick, insulating walls which will keep the MicroHouse cool in summer and will keep heat from escaping in winter:
A reverse shed roof will allow for easy mounting of solar panels, and high windows are an option to vent warm air out of the building. In an innovative departure from conventional construction techniques, a modular roof design is being considered, with each module weighing no more than 200 lbs., so that a small team of builders can lift a module into position without the help of a crane. Compressed straw packed into each module serves as insulation. Chris plans to test and refine the roof module design concept before the actual build, as there is little information be be found on such modular roof design.
For evolving design details and planning, follow Chris Reinhart’s working design log here. Here at Factor e Farm, the Microhouse build, scheduled for September 28, will likely involve 24-28 people working in crews on various aspects of the building process so that build time can be minimized. The OSE team will be making continuing improvement to the CEB Press + Tractor + Pulverizer + Power Cubes to make it all happen.