[[wiki-architecture]] · [[Building Materials]] · [[ARCHITECTURE]] · [[000]] # Torsion box A torsion box consists of two thin layers of material (skins) on either side of a lightweight core, usually a grid of beams. It is designed to resist torsion under an applied load. A hollow core door is probably the most common example of a torsion box (stressed skin) structure. The principle is to use less material more efficiently. The torsion box uses the properties of its thin surfaces to carry the imposed loads primarily through tension while the close proximity of the enclosed core material compensates for the tendency of the opposite side to buckle under compression. Torsion boxes are used in the construction of structural insulated panels for houses, wooden tables and doors, skis, snowboards, and airframes - especially wings and vertical stabilizers. == References == - [[Urban and Planning/Urban Regeneration]] - [[Wiki-Architecture/Buildings and Structures]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 00 - Integrated Approach]] - [[Urban and Planning/Master Planning]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 10 - Landscape and Signs]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 10 - Landscape and Signs/Section 2 - Signs and Display]] - [[Professional Practice/Codes & Standards/Fire Safety Codes]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 08 - Building Services/Section 5B - Escalators and Moving Walks]] - [[Urban and Planning/Town & Country Planning]] - [[Professional Practice/Public & Cultural/Low Cost Construction]] Hancock, Ralph, ed. (1977). "Ski". How It Works: The Illustrated Encyclopedia of Science and Technology. Vol. 16 (Shaver–Statics). New York: Marshall Cavendish. pp. 2113–2116. Schleining, Lon (2004). "The Torsion Box". The Workbench: A Complete Guide to Creating Your Perfect Bench. Newtown, CT: Taunton Press. pp. 173 ff. ISBN 978-1-56158-594-6. Williamson, Robert A. (1948). "Torsion-Bending Stresses in Box Beams". Journal of the Aeronautical Sciences. 15 (7): 427–434. doi:10.2514/8.11609. == See also == Tubular bridge and Fairbairn crane, the Victorian invention of the multiple torsion box, for the construction of bridges and cranes in wrought iron.