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
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)
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