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  2. Gothic-arch barn - Wikipedia

    en.wikipedia.org/wiki/Gothic-arch_barn

    Gothic-arch design guide. The Gothic arch originated in Michigan in the late 19th-century; [3] the first occurrence may have been in Isabella County in 1885. [4] Arches were cut from boards nailed together. These early arches were not sufficiently sturdy, but did allow for structures free of heavy timbers.

  3. Arch - Wikipedia

    en.wikipedia.org/wiki/Arch

    If one impost is much higher than another, the arch (frequently pointed) is known as ramping arch, raking arch, [90] or rampant arch (from French: arc rampant). [91] Originally used to support inclined structures, like stairs, in the 13th-14th centuries they appeared as parts of flying buttresses used to counteract the thrust of Gothic ribbed ...

  4. Howe truss - Wikipedia

    en.wikipedia.org/wiki/Howe_truss

    Early wooden bridges were usually of the Towne lattice truss or Burr truss design. Some later bridges were McCallum trusses (a modification of the Burr truss). About 1840, iron rods were added to wooden bridges. The Pratt truss used wooden vertical members in compression with diagonal iron braces. The Howe truss used iron vertical rods in ...

  5. Eagle River Timber Bridge - Wikipedia

    en.wikipedia.org/wiki/Eagle_River_Timber_Bridge

    The bridge is primarily constructed of wood joined together with steel connectors. It is supported by two adjacent arches: one spans 74 feet (23 m) and the other 79 feet (24 m). Each arch is constructed from two curved sections joined together by a crown hinge. The road deck is made of wood and covered by an asphalt road surface. [2]

  6. Hammerbeam roof - Wikipedia

    en.wikipedia.org/wiki/Hammerbeam_roof

    A hammer-beam is a form of timber roof truss, allowing a hammerbeam roof to span greater than the length of any individual piece of timber.In place of a normal tie beam spanning the entire width of the roof, short beams – the hammer beams – are supported by curved braces from the wall, and hammer posts or arch-braces are built on top to support the rafters and typically a collar beam.

  7. Covered bridge - Wikipedia

    en.wikipedia.org/wiki/Covered_bridge

    Many different truss designs were used. One of the most popular designs was the Burr Truss, patented in 1817, which used an arch to bear the load, while the trusses kept the bridge rigid. Other designs included the King, Queen, Lattice, and Howe trusses.

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