Part 4 - Field Survey Flashcards

1
Q

16 Horizontal datum: orientation

Every bearing in a cadastral survey that defines or marks a new primary parcel boundary point must…

A
  • be orientated in terms of an official projection applicable to the area, unless the survey does not make a new field measurement
  • every bearing in a cadastral survey must be expressed in terms of the same horizontal projection
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2
Q

17 Horizontal datum: connection

A new boundary point, a new boundary mark, and an old boundary mark on a primary parcel being created must be connected by 1 or more vectors to…

A
  • a cadastral survey network mark (6th order) within 1000m where one exists
  • any cadastral survey network mark where one does not exist within 1000m

(adopted or measured)

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3
Q

18 Vertical datum

A
  • all reduced levels in a survey must be expressed in terms of a single official vertical datum
  • if 1 or more vertical control marks (3V or better) exist within 1000m of any new height-limited boundary point that is defined by a reduced level, at least 1 of those marks must be included in the survey
  • if no vertical control mark exists within 1000m of any boundary point, a vertical control mark at any distance must be included in the survey
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