FS Field and Mapping Concepts Guide
Survey Bible

Source Check
Aligned to the NCEES FS CBT specifications for surveying processes and mapping processes, including instrumentation, GNSS/GPS, control surveys, topographic surveys, CAD, GIS, digital terrain models, photogrammetry, remote sensing, UAS, and lidar.

Field Procedures
Know why a procedure is used, not just what instrument is involved. FS questions often test judgment: which method is appropriate, what error source matters, or what check should be performed.

Total Stations and EDM
- EDM observations are affected by atmospheric conditions, prism constants, and setup errors.
- Redundant observations help identify blunders.
- Good field notes document setup, backsight, foresight, instrument height, target height, weather, and unusual conditions.

GNSS
- Static GNSS is suited for control work.
- RTK is efficient for many topographic and construction tasks, but depends on satellite geometry, correction links, multipath, and initialization quality.
- Understand ellipsoid heights, orthometric heights, geoid models, and why vertical GNSS results require care.

Mapping
- Topographic surveys collect features, breaklines, spot elevations, and control needed to model terrain.
- GIS emphasizes spatial data management and analysis.
- CAD drafting emphasizes survey deliverables and construction documents.
- Remote sensing, lidar, photogrammetry, and UAS methods require ground control and quality checks.

Boundary and Records
- Record information guides the search, but field evidence must be evaluated.
- Monuments generally carry more weight than measurements when reliable and original.
- Legal descriptions, easements, plats, and public records must be read carefully.

Quality Control
Always ask what independent check proves the work: closure, redundancy, calibration, comparison to record, or review by another qualified person.