Concrete 3D Printed ADUs

Concrete 3D Printed ADUs | Fall 2021

In collaboration with Annie Carver

With the trend of 3D printed concrete houses, we researched whether or not the technology could be effective in Iowa’s cooler climate.

We decided to use a sine wave geometry to insulate the printed walls. Through several variations, we explored ways to minimize thermal bridging and apply conventional methods to the wall, such as waterproofing. By exploring sustainable, effective, and locally sourced insulation materials, we decided to use sheep wool in the gaps to insulate the wall.

Further exploration led us to question what a wall could become with additive manufacturing. Planters and furniture can be printed by reproducing the sine waves inside and outside of the wall. This allows the wall to have more functionality while also creating a sculptural aesthetic to the concrete.

Printed as modular units, the walls can be assembled with each other or with a conventional wall assembly to incorporate windows and doors.

2’

1’

1’ 1’

6”

6”

3”

Utilzing potterbot to 3D print a scale model of wall assembly

2” = 1’ prototype of the wall showing planter, insulation, and furniture opportunities 3D printed can provide

Input

Set a Curve & Adjust Sine Period

Developed a Grasshopper definition to allow the wall modules to morph in relationship to the overall floor plan. Allows for flexibility and multiple design modules to fit virtually any desired floor plan.

Output

Wall Assembly

The wall modules are intended to assemble accessory dwelling units (ADU). ADUs will be installed in previously a previously redlined neighborhood of Des Moines, IA, as a means of architectural reparations. Intended to build community, the ADUs have the flexibility to be businesses, gardens, and community centers, which will activate both the owners and the architecture.