The City of Calgary’s High-Efficiency Cadastral Base
The city’s cadastral mapping system relies on
MicroStation, which is used extensively throughout the process in a sophisticated, highly customized,
and integrated application environment.
The City of Calgary
The City of Calgary is implementing a base map-
ping management program that includes two sys-
tems related to the cadastral mapping process:
the legal survey fabric and the ownership parcel
fabric. These integrated production systems are
tied to multiple Oracle databases as well as the
corporate addressing system. They are main-
tained and accessed concurrently using
Bentley’s MicroStation by 16 engineering, techni-
cal, and cartographic staff members with a high-
ly efficient production rate.
Because addressing and base mapping are maintained in separate systems by different groups
within the city, address/parcel matching was an
issue for a number of years. Through customization using MicroStation MDL and associated
applications, with some minor modification of the
supporting database schemas, the city integrated
the parcel application with the addressing system
at the application level—virtually eliminating the
possibility of creating mismatches. Augmenting
this with automated QA and reporting, the city
has reduced the number of address/parcel anomalies to approximately less than one percent, a
number that is still improving.
Over the last eight years, the city has saved approximately $1.3 million due directly to increased efficiencies with the Bentley software. ;
GEOSPATIAL MAPPING AND CADASTRE
Pacific Coast Highway
Vertical Mapping Resources, Inc.
The Pacific Coast Highway is a major source of
contaminants. When rainwater flow crosses the
roadway, it becomes contaminated with metal from
brake pads, ground-up tire rubber, trash, and oil.
Vertical Mapping Resources (VMR) provided
color and black-and-white digital orthophotogra-phy, digital terrain models including two-foot contours, and design scale planimetrics for several
large sections of the highway. CALTRANS will use
this information to prevent or treat highway runoff.
The integration between MicroStation and
Autodesk products also helps VMR save time and
money. Efficiency has greatly increased because
of the easy interoperability with DWG files. Many
of VMR’s clients require topographic mapping
files delivered in DWG format; MicroStation not
only makes it simple to save a DGN file out as a
DWG, but also facilitates painless polishing of
DWG files in the MicroStation environment.
It is estimated that, by using MicroStation,
$500,000 has been saved and months of
production and employee training time. ;
The firm used InRoads to speed up the triangulation process as well as the production of contours
and other surface information. It could also save
projects to open at a later date and save DTM
files. These files can be opened on other workstations using InRoads so VMR doesn’t have to retri-angulate data over and over again.