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The civil engineering term may also refer to the structure supporting one side of an arch, [4] or masonry used to resist the lateral forces of a vault. [5] The impost or abacus of a column in classical architecture may also serve as an abutment to an arch. The word derives from the verb "abut", meaning to "touch by means of a mutual border".
The term "covered bridge" is sometimes used broadly to describe any "bridge-like structure" that is covered by a roof. However, bridge-like structures such as Heilig-Geist-Spital, a hospital built out over two arched spans into the Pegnitz river in Nuremberg, but which did not ever provide a complete crossing to the other side, are not included ...
A revolving door typically consists of three or four doors that hang on a center shaft and rotate around a vertical axis within a round enclosure. Rib vault The intersection of two or three barrel vaults. Ridge board A structural member that runs the length of the ridge (high point) on a sloped roof to which the upper ends of rafters are attached.
A jack arch, and a jack arch with a relieving arch above, as illustrated in the Lexikon der gesamten Technik The Mardin jack arch, view from the crypt underneath. A jack arch is a structural element in masonry construction that provides support at openings in the masonry.
A tubular bridge is a bridge built as a rigid box girder section within which the traffic is carried. [26] Examples include the Britannia Bridge and the Conwy Railway Bridge in the United Kingdom. A skyway is a type of urban pedway consisting of an enclosed or covered footbridge between two buildings, designed to protect pedestrians from the ...
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A lightweight box crib Hardwood railway sleepers used as a box crib, North Australian Railway, 1975 Bailey Island Bridge, Harpswell, Maine. The only granite cribstone bridge in the world. A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and ...
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