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  2. History of modern period domes - Wikipedia

    en.wikipedia.org/wiki/History_of_modern_period_domes

    Architecture portal. v. t. e. Domes built in the 19th, 20th, and 21st centuries benefited from more efficient techniques for producing iron and steel as well as advances in structural analysis. Metal-framed domes of the 19th century often imitated earlier masonry dome designs in a variety of styles, especially in church architecture, but were ...

  3. Delicate Arch - Wikipedia

    en.wikipedia.org/wiki/Delicate_Arch

    Delicate Arch is a 52-foot-tall (16 m) freestanding natural arch located in Arches National Park, near Moab in Grand County, Utah, United States. [1] [2] The arch is the most widely recognized landmark in Arches National Park and is depicted on Utah license plates and a postage stamp commemorating Utah's centennial anniversary of admission to the Union in 1896.

  4. Cast-iron architecture - Wikipedia

    en.wikipedia.org/wiki/Cast-iron_architecture

    An elaborate cast iron frame was used for the dome of Saint Isaac's Cathedral in St Petersburg (1837–38), and the new roof following a fire of Chartes Cathedral (also 1837–8, and the widest span of a metal roof at the time). Similarly large span beams were also to support the wide roofs of the Palace of Westminster (1840s–50s).

  5. Arch - Wikipedia

    en.wikipedia.org/wiki/Arch

    An arch is a curved vertical structure spanning an open space underneath it. [1] Arches may support the load above them, or they may perform a purely decorative role. As a decorative element, the arch dates back to the 4th millennium BC, but structural load-bearing arches became popular only after their adoption by the Ancient Romans in the 4th ...

  6. Utah monolith - Wikipedia

    en.wikipedia.org/wiki/Utah_monolith

    The Utah monolith was a metal pillar that stood in a red sandstone slot canyon in northern San Juan County, Utah, United States. The pillar was 3 m (9.8 ft) tall and made of metal sheets riveted into a triangular prism. It was unlawfully placed on public land between July and October 2016; it stood unnoticed for over four years until its ...

  7. List of longest natural arches - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_natural_arches

    Estimates range from 280 ft (85.34 m) to 340 ft (103.6 m), so the midpoint is listed, ±36 ft (11.0 m) which includes a ±6 ft (1.8 m) accuracy above/below the higher/lower estimate. Jiangzhou ranks somewhere between 2nd and 6th position based on current estimates. [6] 4. external image. Dachuandong Arch.

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