Abutment
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For the technical mathematical term, see Spectral sequence.
For the property law term, see abutter.
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An abutment is an end support of a bridge superstructure. Abutments are used for the following purposes:
- to transmit the reaction of superstructure to the foundations.
- to retain the earth filling.
- to connect the superstructure to the approach roads.
An abutment is also, generally, the point where two structures or objects meet.
Specifically, an abutment may be:
- the part of a structure that supports an arch.
- the tooth or teeth that support a fixed or removable bridge.
- the part of an implant that acts as an connection between the implant and the crown.
Abutment is also a term used by civil engineers in dam construction; moving water from a large reservoir to a channel such as a spillway, there are smooth transition walls at both sides named abutments which minimize the water's energy loss.
Abutment is also the term for a titanium connection used to attach prosthetics to a dental implant that is Osseointegrated.
Look up abutment in Wiktionary, the free dictionary.
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