An abutment is, generally, the point where two structures or objects meet. This word comes from the verb abut, which means adjoin or having common boundary. An abutment is an engineering term that describes a structure located at the ends of a bridge, where the bridge slab adjoins the approaching roadway. This structure is basically a retaining wall designed to carry the loading conditions present in bridge structures. In architecture an abutment is formed of "solid masonry placed to resist the lateral pressure of a vault" (Nikolaus Pevsner). Specifically, an abutment may be the part of a structure that supports an arch.

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Other articles related to "abutment, abutments":

Bedell Covered Bridge - Image Gallery
... A view of the pier and the western abutment from the eastern abutment A view, from and showing the eastern abutment, showing the pier and the western ...
Craigellachie Bridge - Gallery
... View of spandrel, arch and abutment Looking downstream towards the bridge, with the replacement in the background Abutment Side view showing arch ...
Bone Anchored Hearing Aid - Use and Operation
... hearing aids use a surgically implanted abutment to transmit sound by direct conduction through bone to the inner ear, bypassing the external auditory ... A titanium prosthesis is surgically embedded into the skull with a small abutment exposed outside the skin ... A sound processor sits on this abutment and transmits sound vibrations to the titanium implant ...
Civil Engineering - Types of Abutments
... There are different types of abutments including Gravity Abutment, resists horizontal earth pressure with its own dead weight U Abutment, U shaped gravity abutment Cantilever Abutment, Cantilever retaining wall ... Usually supported on piles Semi-Stub Abutment, Size between full height and stub abutment Counterfort Abutment, Similar to counterfort retaining walls Spill-through Abutment, Vertical buttresses with open spaces ...
Examples of Degeneration - The Spectral Sequence of A Filtered Complex, Continued
... what happens if we define is a natural candidate for the abutment of this spectral sequence ... To describe the abutment of our spectral sequence in more detail, notice that we have the formulas To see what this implies for recall that we assumed that the filtration was separated ... We conclude , that is, the abutment of the spectral sequence is the p'th graded part of the p+q'th homology of C ...

Famous quotes containing the word abutment:

    Once it chanced that I stood in the very abutment of a rainbow’s arch, which filled the lower stratum of the atmosphere, tinging the grass and leaves around, and dazzling me as if I looked through colored crystal. It was a lake of rainbow light, in which, for a short while, I lived like a dolphin. If it had lasted longer it might have tinged my employments and my life.
    Henry David Thoreau (1817–1862)