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Six examples of fabric-cast concrete that are breaking the mould
The article explores the innovative technique of fabric-casting concrete, a method gaining renewed interest among designers and architects for its potential to create dramatic, sculptural forms. This process involves pouring cement into a textile mould, which is typically supported by a wooden frame, allowing for unique shapes and textures that traditional formwork cannot easily achieve. The technique has historical roots with pioneers like the University of Manitoba's Centre for Architectural Structures and Technology (CAST) and 20th-century Swiss engineer Heinz Isler, who utilized it for thin concrete building shells. Modern applications, however, are pushing the boundaries, with experimentation extending to sculptural furniture and novel architectural components, even incorporating robotics.
One significant advantage of fabric casting, according to engineering and architecture firm Atkins, is its efficiency, potentially reducing concrete usage by up to 40% and requiring less labor. Joseph Sarafian, a designer working on robotic casting methods, emphasizes the scalability of this technique for future construction, envisioning its use for unique building facade elements and even primary structural components. This innovation addresses the growing demand for variation in parametric design, which often faces limitations with conventional construction methods.
Several compelling examples demonstrate the versatility and potential of fabric-cast concrete. Ron Culver and Joseph Sarafian's "Fabric Forms" project, conducted at the University of California, integrates robotics into the casting process. They pour a concrete and fiberglass mixture into Lycra sleeves manipulated by six-axis robots, eliminating the need for repeatedly building and dismantling plywood frameworks. This robotic approach significantly streamlines the process and allows for greater design flexibility.
The "Augmented Skin" project by Bartlett School of Architecture graduates showcases another inventive application. This technique involves using sticks wrapped in stretchy fabric to create intricate building components. Concrete is poured around these stick-reinforced fabric moulds, forming solid, interconnected structures without external support frameworks. The sticks remain embedded, providing additional reinforcement. While currently applied to smaller prototypes like chairs, the project envisions larger architectural structures such as pavilions and bridges.
Japanese studio Schemata Architecture Office employed fabric casting to create a chunky, uniquely textured counter for a Papabubble sweet shop in Tokyo. Unlike the intricate web-like forms often associated with fabric casting, this project used a fabric bag to produce a more robust, yet still organically shaped, concrete element, highlighting the material's adaptability to various aesthetic goals. Similarly, Janwillem Van Maele's "Mass IIII" side table demonstrates the creation of furniture by suspending a fabric net, filling it with cement and gravel, and allowing it to harden, resulting in a distinct, sculptural piece.
Further exploration of the technique includes "FattyShell (v.01)" by University of Michigan students, who used stitched rubber sheets tensioned with cables to control the concrete's form, resulting in complex, multi-layered structures. Finally, Florian Schmid's "Stitching Concrete" presents an alternative approach by using concrete-impregnated fabric (Concrete Canvas). This material, consisting of cement layered between fabric and PVC, can be manipulated after soaking and then hardened, offering a different aesthetic and application for items like stools. These examples collectively illustrate the ongoing evolution and potential of fabric-cast concrete as a transformative material in architecture and design.
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