Tensioned membrane works refer to architectural structures that use tensioned membranes as primary building materials. These structures are characterized by their flexibility, lightness, and the ability to form complex shapes. The membrane is stretched and tensioned over a supporting framework, creating a tensioned skin that can be used for roofs, facades, and other architectural elements. Tensioned membranes are often made of materials like ETFE (Ethylene Tetrafluoroethylene) or PTFE (Polytetrafluoroethylene) due to their durability and weather resistance.