Index
Glossary

Search ASCM by Radius
 
Allows the user to search for Alberta Survey Control Markers (ASCM) within a given distance (radius) from the centre of a given point. The radius distance is measured from an ASCM number or a legal description based on the Alberta Township System (ATS) format.
 
Radius Distance - distance to be searched, measured in metres
 
ASCM Number - 2 to 6-digit numeric value assigned to identify the marker
 
ATS Legal Description
MER - Meridian (west of the 4th, 5th or 6th)
RGE - Range (1-30)
TWP - Township (1-126)
SEC - Section (1-36)
QTR - Quarter Section (NE, NW, SE, SW)
 
Marker Condition - last reported physical condition of the marker; only markers meeting exact condition(s) chosen will be returned (marker conditions originally chosen remain selected until changed by the user)
  • Installed - marker recently installed in the field (complete location description or field inspection report pending)
  • Good - latest field inspection reported marker to be in good physical condition
  • Anomalous - marker appears unstable as result of data processing by Director of Surveys (DOS), or by evidence reported by an Alberta Land Surveyor re physical damage or disturbance
  • Destroyed - marker certified "physically lost" after a thorough search by an Alberta Land Surveyor
 
Marker Type - general format of the ASCM ID Card Type; only markers meeting exact type(s) chosen will be returned (marker types originally chosen remain selected until changed by the user)
  • Preliminary - new or recently installed marker with coordinates that have not been approved/adopted by DOS or coordinates/elevation for a published marker due to be revised by DOS
  • Final - rural/urban markers that have been approved/adopted and published by DOS
 
Card Format - ASCM ID Card produced formatted to either UTM or 3TM coordinates (card format originally chosen remains selected until changed by the user)
  • UTM - Universal Transverse Mercator - mapping plane zone is 6 degrees wide (UTM central meridians in Alberta are 111 and 117 degrees west longitude)
  • 3TM - 3-degree Transverse Mercator - mapping plane zone is 3 degrees wide for urban ASCMs and 2 or 4 degrees wide for rural ASCMs (3TM central meridians in Alberta are 111, 114, 117 and 120 degrees west longitude)
Note: For 3TM urban ASCMs the zone is 1.5 degrees wide on either side of the central meridian. For 3TM rural ASCMs the zone is 1 degree wide on either side of the central meridians of 111 and 117 degrees west longitude and 2 degrees wide on either side of the central meridians of 114 and 120 degrees west longitude (Alberta only).
 
Enter the radius distance to be searched, next enter the ASCM number or enter the Meridian, Range, Township and or Section and Quarter Section then search; ASCMs are returned in a search summary results grid.
 
Note: If required, click the "Printable List" icon to create a list of all search results returned to the grid.
 
Under "View" click a "View Full ASCM" icon to retrieve an individual ASCM ID card or click the "View on Map" icon to locate the ASCM on the Alberta Map. The maximum number of ASCMs returned by a radius search is 1000. If you exceed this limit you will be asked to reduce the search area (i.e., radius distance) searched.
 
Note: Multiple ASCM ID cards may be added to the shopping cart for checkout and delivery (maximum 250 per cart); upon checkout they will be combined into a single .pdf file format for download. If necessary, card format can be changed from the shopping cart by using the drop down menu.
 
Enter ASCM number.
 
 
Enter ATS legal description.
 
 
Note: ASCM information, made available through the SPIN System, is not guaranteed or supported by the SPIN 2 Help Desk. For support, contact Geodetic Control Unit - Alberta Environment and Parks (Telephone: 1-780-422-1291 or Fax: 1-780-427-1493).
 

For more detailed explanations of ASCM information see the Alberta Survey Control Products Manual.