Its presence will remain a key feature of the skyline, even as its title of the city’s tallest has since passed on to Wilshire Grand Center and as other changes occur to downtown Los Angeles in the in the years to come.The Los Angeles SkySlide is the sort of thing you might expect to find in Japan as opposed to Downtown LA. Bank Tower has dominated the Los Angeles skyline as its tallest building for 27 years, and has been seen in the backdrop of numerous films produced by Hollywood studios. The triangular bays are repeated in the crown with more pronounced angles providing greater visual distinction between it and the tower below.Īt ground level, development of the tower incorporated the creation of the Bunker Hill steps, a pedestrian link ascending the topographical change between the modern downtown towers built in the Bunker Hill area primarily in the mid to late 20th century and the shorter early 20th century buildings of the historic downtown core. Designers based the layout of the tower plan on a concept of overlapping geometries, a circular form superimposed onto a rectilinear matrix, a shape that is translated to the outside of the building and extruded upward into a series of upper level setbacks and a textured façade made up of triangular window bays. Bank Tower was the tallest structure to be located in a seismically active area. A cascading set of waterfalls and stairs descends around the perimeter. It is also notable for the public-realm improvements at its base, which is built into a hill. Its Art-Deco-via-Post-Modern design took cues from established local icons of the 1920s, including City Hall and the Central Library. Originally known as Library Tower, it was constructed across the street from the historic Central Library of Los Angeles and was developed utilizing air rights purchased from the city, preserving the historic open setting of the low-rise building. Bank Tower was the first supertall building, not just in Los Angeles, but also in the entire western United States to the west of Chicago and Houston. Within a composite building’s primary structural elements. Where known, the CTBUH database breaks out the materials used Examples include buildings which utilize: steel columns with a floor system of reinforcedĬoncrete beams a steel frame system with a concrete core concrete-encased steel columns Ĭoncrete-filled steel tubes etc. steel, concrete, timber) are used together in the main structuralĮlements. ForĮxample, a Steel Over Concrete indicates an all-steel structural system located on top of anĪll-concrete structural system, with the opposite true of Concrete Over Steel.Ī combination of materials (e.g. all-steel, all-concrete, all-timber), one on top of the other. Or concrete slab on top of timber beams is still considered an “all-timber” structure as theĬoncrete elements are not acting as the primary structure. Note that a building of timber construction with a floor system of concrete planks An all-timber structure may include the use of localized non-timber connections between Reinforced concrete which has been precast as individual components and assembled togetherįrom timber. Note that a building of steel construction with a floor system of concrete planks orĬoncrete slab on top of steel beams is still considered an “all-steel” structure as the concreteĮlements are not acting as the primary structure.įrom concrete which has been cast in place and utilizes steel reinforcement bars and/or steel Both the main vertical/lateral structural elements and the floor spanning systems are constructedįrom steel.
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