2. Dimensions
a. Distance
Distances in surveying may be measured in horizontal, vertical, or slope directions, Figure D-1.
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Figure D-1 |
Generally the result of a distance measurement is expressed either as a horizontal or vertical value.
In addition to orientation, a distance has a begin, end, and magnitude. All must be either expressed or implied by the type of distance to avoid ambiguity. For example when I stated my height:
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orientation: vertical implied
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begin: floor implied
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end: top of my head implied
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magnitude: 5’11”
b. Angle
Angles are measured in a vertical or horizontal direction, Figure D-2; slope angles aren’t intentionally measured.
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(a) Vertical |
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(b) Horizontal |
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Figure D-2 |
Along with its orientation, an angle has four parts, Figure D-3:
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Figure D-3 |
