The floating geodesic dome Rising Moon was designed for the autumn festival “lantern wonderland” 2013 in Victoria Park in Hong Kong by the local architecture firm named Daydreamers. The dome has a 20 meter diameter, and for the surface covering 4800 five gallon (22,7 liter) polycarbonate water containers were used. These containers were mounted into a network of electric sockets with LED lighting. The sphere’s surface was triangulated – each triangle carried about 28 water containers. The main structure is a steel rod frame. The bottles were chosen for their resemblance with traditional Chinese beacon-shaped lanterns. In the interior of the dome 2300 regular PET bottles are suspended from the ceiling providing the effect of the sea. Since the pavilion is floating, the whole appears to be a complete sphere because of the reflection of the water. By manipulating the LED lights, multiple phases of the moon can be simulated on the surface – hence the name of the pavilion. Additionally in the top of the pavilion there is an opening in the roof which allows the real moonlight pass through the pavilion. According to Daydreamers architects, the whole building can be de-assembled and the parts (bottles) recycled.
Case del Fe (Faith House) is a house built for the Hondurian Foundation for Rehabilitation and integration of handicapped people. This building does not feature a green roof. For pillars, Andreas Froese used vehicle wheel rims to create columns.
Campo Cielo, Honduras, 2004
Campo Cielo is a sort of club room for women realized in Tegucigalpa, Honduras, 2004 by Andreas Froese. It offers shelter for about eight people. The building has an integrated water tank which required that cement had to be used in order to protect the earth mortar from water.
Froese usually does not apply cement in the walls of the buildings, but rather relies on earth mortar to stick the PET bottles together (see for example also the Trivadrum Cerala in India on this page).
Aquaducto Romano, Honduras, 2004
In order to experiment with vault structures incorporating PET bottles, the study object Aquaducto Romano was built by the Foundation Ecopark Zamorano in Honduras. A copy of a Roman aquaduct, multiple methods of building and more than ten different mixtures of mortar (mixtures of cement, earth, and lime) are tested in this object.
Froeses’ work has found a lot of application all over the world, and can be found from Honduras and Mexico to Nigeria, India, and other countries.
Andreas Froese is a German active in Honduras, South America and who has developed a number of techniques to integrate PET bottles in building construction. For this purpose he started the company ECO-TEC in 2001 in Honduras. This company supports among other environmental issues the reuse of solid waste in architecture. Froeses’ developed building technique reduces the use of concrete in building to 40% of regular cost. The system uses the PET bottle as a brick, fills it with natural resources such as sand or mud, and sticks it clay and other locally produced garbage such as rubble and vermiculture. Froese usually employs people in social need which adds another dimension of sustainability to his approach.
In El Zamorano, Honduras, a house from 8000 PET bottles was constructed in 2003. The green roof in wet conditions can weigh up to 30 tons. Nevertheless, there are no extra reinforced supports other than the PET wall. This house is generally considered the first PET bottle house without the use of cement for the walls.