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Twisted Skyscraper
Buildings can appear to be twisted by design, where the twisting ( torsion, helix, etc.) is structural rather than merely an ornamental detail. The Council on Tall Buildings and Urban Habitat defines a twisting building as one that progressively rotates its floor plates or its façade as it gains height. There are 15 spiralled skyscrapers, and 13 more are under construction. Turning Torso, in Malmö, Sweden is regarded as the first twisted tower or building. It was designed by Santiago Calatrava and was completed in 2005. When completed, Diamond Tower The Diamond Tower is a skyscraper located in the Tel Aviv District city of Ramat Gan, Israel, containing the world's largest diamond trading hall, accommodating up to 1,000 people. At 115 meters and 32 floors, the tower was the tallest building i ... will be the only building to twist a full 360 degrees along its height. F&F Tower, in Panama City, holds the record for the tightest twist, that is, the highest average rotation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torsion (mechanics)
In the field of solid mechanics, torsion is the twisting of an object due to an applied torque. Torsion is expressed in either the pascal (Pa), an SI unit for newtons per square metre, or in pounds per square inch (psi) while torque is expressed in newton metres (N·m) or foot-pound force (ft·lbf). In sections perpendicular to the torque axis, the resultant shear stress in this section is perpendicular to the radius. In non-circular cross-sections, twisting is accompanied by a distortion called warping, in which transverse sections do not remain plane. For shafts of uniform cross-section unrestrained against warping, the torsion is: : T = \frac \tau= \frac G \varphi where: * ''T'' is the applied torque or moment of torsion in Nm. * \tau (tau) is the maximum shear stress at the outer surface * ''J''T is the torsion constant for the section. For circular rods, and tubes with constant wall thickness, it is equal to the polar moment of inertia of the section, but for other shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
