PLTW 3.4 Vocab Surverying

The reading on a rod held at a point of known or assumed elevation. 

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A relatively permanent object, natural or artificial, bearing a marked point whose elevation above or below the adopted datum is known or assumed.

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The difference between a measured or calculated elevation and the true or established elevation.

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A land survey that provides points and elevations for building civil engineering projects. Often called engineering survey.

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Survey that establishes a network of horizontal and vertical monuments that serve as a reference framework for other surveys.

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Any surface to which elevations are referred (for example, mean sea level).

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The process of determining the difference in height between a plane of sight and a point.

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The vertical distance from a datum to a point or object.

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A complete record of all measurements made during the survey with sketches and narration, where necessary, to clarify the notes.

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The final elevation of the ground surface after excavating or filling.

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