https://drive.google.com/file/d/1ZxZzU_iM0IErK0Yq4-UrzoWX5RvAmEnh/view?usp=drive_link
In this episode of Storman Norman Presents, we break down the complex world of vertical datums in British Columbia.
Summary: Height matters, but so does the datum. We analyze the co-existence of CGVD28 and CGVD2013 in BC, the "Two-Parameter" requirement (Geoid + Epoch), and why certain legacy plans still mandate the use of CGVD28.Key Study Points:
CGVD28 vs. CGVD2013: Understanding the transition from spirit leveling to GNSS-based geoid models.
The Two-Parameter Rule: The mandatory requirement to define both the Geoid Model (e.g., CGG2013a) and the Epoch (e.g., 2010.0).
Transformation Risks: Why Air Space plans still require CGVD28 and the risks associated with mathematical datum shifts.
Sources: ABCLS PA (Vertical Datums), Surveyor General Circular Letter 465B, GeoBC Height Transformation documents.
Resources: PA PDF | Infographic | Quiz
