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Glossary of Home/Building Structural Components

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The following terms define Building and Machine Parts

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abutment: plane or point designed to give support or withstand thrust, especially on projecting part of structure.

adapter: connector that enables different parts or devices to fit or function together.

anchor bolt: threaded rod embedded in foundation for support and stabilization of wood sill.

angle iron: metal brace used to reinforce comers or angles.

angle rafter: rafter in sloping roof.

aperture: usually narrow opening, slit, or crack.

apron: plate or covering for mechanical device that protects its operator; interior trim beneath window stool.

arbor: short spindle that supports rotating machine part.

arm: small extension attached horizontally at angle to large base.

axle: shaft or spindle that supports rotating wheel.