Practice Quiz

Surveying FS

Category - Geodesy & Mapping

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A plat that is plotted at a scale of 1 in = 60 ft needs to be replotted at a scale of 1 in = 50 ft. What change is needed to produce the new plot?
  1. Enlarge the drawing by 80%
  2. Reduce the drawing by 80%
  3. Enlarge the drawing by 120%
  4. Reduce the drawing by 120%
Explanation
Answer: C - In order to replot a plat originally plotted at 1 in = 60 ft at a new scale of 1 in = 50, the drawing needs to be enlarged by 120%.

Solution

Compare the two scales: (1 in / 50 ft) / (1 in / 60 ft) = 60/50 = 1.20

In order to replot at 1 in = 50 ft, the drawing must be enlarged by 120%.
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