International Society of Fabric Forming
International Society of Fabric Forming (ISOFF)

The Society's focus is:

Improving communication between all participants: researchers, architects, manufacturers, distributors and concrete contractors;
Communicating to the world the commanding environmental benefits of fabric forming over rigid formwork;
Developing new and innovative fabric forming solutions.
International Society of Fabric Forming (ISOFF) © 2014

Fabric formwork replaces conventional rigid forming materials such as plywood or steel panels with a thin, flexible sheet of fabric When concrete is contained by a thin fabric membrane, the flexibility of the container naturally produces a set of beautiful and structurally useful tension geometries.

In above-ground structures, fabric formwork is used to form:

Foundation footings
Shell structures
In surface and marine applications, fabric formwork is used for:

Revetment blankets to prevent riverbank and shore line erosion
Underwater pile jackets
Advantages of fabric forming

Material Reduction: Fabric forms use hundreds of times less material than conventional rigid formwork. Concrete and steel can also be conserved by forming more efficient curved geometries.
Cost Savings: Fabric forms cost far less than rigid forms due to the efficiency of the tensile-only membrane. In addition, certain fabrics can be reused many times over.
Improved Concrete Quality: Permeable fabrics improve surface finish, compression, strength and impermeability by filtering air bubbles and excess mix water from the wet concrete.
Waterproof Concrete: Inexpensive plastic-coated fabric forms provide a permanent waterproof shield when left on a concrete cast - useful, for example, in damp-proofing foundation footings.
Beauty: Fabric-cast concrete is distinguished by its soft curves and immaculately detailed surfaces, offering unique forms of architectural beauty to concrete products and construction.
What is fabric forming
This unique "Tree House" by Sandy Lawton of Arro Design, Vermont, USA, 2007, used fabric formed columns, walls, and floors.