The project of United Bottle was developed by Dirk Hebel, Tobias Klauser and Jörg Stollmann. It is a PET water bottle and a building unit at the same time, which can be normally recycled. It can be distributed in six-packs on containers and collected in plastic waste containers. This makes the bottle suitable for application in catastrophy-hit regions where both drinking water and building material are scarce and in need. The bottle can be used repeatedly for water storage, but there is also a second use: it can be filled with heavy material such as sand and dirt, and then used as a brick. It can also be left empty and used as a building element for a light-weight structure such as an indoor pavilion.
The concept of United Bottle is intended to solve both the garbage problem and the housing need for areas destroyed by hurricane or tsunami. The bottles can be used to build stable walls for temporary and long term shelter – these structures can be covered by tents or other membrane structures. The pieces lock into each other which gives additional stability and resistance to torsion. In 2007 the first prototype of the United Bottle was 3D printed by stereolithography.

United_Bottle filled with water
United_Bottle filled with dirt
United_Bottle filled with sand
Concept scheme of the bottle house
application of United_Bottle
United_Bottle pavilion in Frankfurt
United_Bottle pavilion and the creators
United_Bottle pavilion interior
Bar in Venice built from United_Bottle units