Reuters: On this suburban street in Houston, Texas, a new multi-story home is taking shape. But this is not your average building. Layers of concrete are laid down by an enormous 3D printer, weighing more than 12 tons. And it's creating what’s believed to be the first 3D-printed, two-story home in the United States.
Constructing the 4,000-square-foot house will take a total of 330 hours of printing. That's according to architect Leslie Lok, co-founder of a design studio called HANNAH: “In the designing of this house, we not only think about the general floor plans and you know, usage, but we also design the actual print path, like how the printer will print, where it starts and where it stops.”
Lok says since the printer does all the heavy lifting, less workers are needed at the construction site: “It is a much faster construction process and it also requires, you know, only four to five people on site to print a whole house.”
The three-bedroom house will feature a hybrid design of wood framing and concrete. Concrete can withstand the hurricanes, storms and other severe weather in Texas that is becoming more frequent and severe due to climate change.
Roberto Montemayor is the project manager at PERI 3D Construction: “Basically this works very similar to the small, plastic desktop 3D printers with two major differences. The first one is the size, of course. And secondly, is the material. We are printing here with concrete, which is a completely different material than plastic.”
Builders hope the innovative technique can one day help more quickly and cheaply build multi-family homes.