1. Structural Collapse Awareness U.S. National Grid

2. Structural Collapse Awareness 2 Objectives In this lesson you will learn how to: Understand and read USNG coordinates Identify locations by using grid coordinates Relay grid coordinates in reference to a given location

3. Structural Collapse Awareness 3 Background The USNG ensures a uniform grid mapping system across cities and counties in Florida and can be easily extended world-wide as a grid reference system. Additional information about the USNG can be found at: www.fgdc.gov/usng

4. Structural Collapse Awareness 4 Features of the USNG USNG expands the utility of street and other maps by adding the following commanding features: Provides a grid reference system that is seamless across jurisdictional boundaries Is the foundation for a universal map index Describes point locations on appropriately gridded paper and digital maps Allows geo-positioning using Global Positioning System (GPS) receivers Supports World Wide Web map portals that link digital maps and GPS data

5. Structural Collapse Awareness 5 Longitude and Latitude Using longitude and latitude can be confusing because different agencies cite different coordinates to identify the same location. All of the longitude and latitude coordinates below describe the same location: DD -85.990151, 30.272240 DM -85 59.409089, 30.16.334386 DMS 85 59’24.545”W, 30 16’20.063”N

6. Structural Collapse Awareness 6 USNG Overlay As a responder, you may be given a map or an aerial photograph of the response area with a USNG overlay.

7. Structural Collapse Awareness 7 USNG Coordinates The first step in reading a USNG map is to understand the letters and numbers that make up a grid coordinate.

8. Structural Collapse Awareness 8 Grid Zone Designation 17R LL 573 918 The 17R is the Grid Zone Designation (GZD) for a world-wide unique address.

9. Structural Collapse Awareness 9 Meter Square Identification 17R LL 573 918 The LL is the 100,000 Meter Square Identification for regional areas.

10. Structural Collapse Awareness 10 Easting and Northing Grid Coordinates 17R LL 573 918 The numbers 573 918 are the Easting and Northing coordinates of a specific location.

11. Structural Collapse Awareness 11 Easting and Northing Number of Digits The more digits used, the smaller the grid coordinates and the more accurate the location. 57323 91820 10 digits locates the area within a 1 x 1 meter square 5732 9182 8 digits locates the area within a 10 x 10 meter square 573 9186 digits locates the area within a 100 x 100 meter square 57 914 digits locates the area within a 1000 x 1000 meter square

12. Structural Collapse Awareness 12 Knowledge Check Given the coordinates 17R NN 17938 01505 what is the 100,000 Meter Square Identification for regional areas? a.17R b.17R NN c.NN d.17938 01505

13. Structural Collapse Awareness 13 Knowledge Check You are responding to an area flooded by the storm surge during Hurricane Michael, and were given the coordinates 6612 5811. What size area will you be able to locate with these coordinates? a.1 x 1 meters b.10 x 10 meters c.100 x 100 meters d.1000 x 1000 meters

14. Structural Collapse Awareness 14 Area Identified with a USNG Coordinate

15. Structural Collapse Awareness 15 Knowledge Check You are given the coordinates of a rescue team on-scene as 507 030. Find and mark this location on the map.

16. Structural Collapse Awareness 16 Knowledge Check (Answer)‏ You are given the coordinates of a rescue team on-scene as 507 030. Find and mark this location on the map.

17. Structural Collapse Awareness 17 Identifying the Coordinates of a Known Location

18. Structural Collapse Awareness 18 Knowledge Check This map is labeled with points A and B. Identify the coordinates for the location of Point A, your location. a.572 914 b.571 913 c.913 571 d.914 572

19. Structural Collapse Awareness 19 Knowledge Check (Answer)‏ This map is labeled with points A and B. Identify the coordinates for the location of Point A, your location. a.572 914 b.571 913 c.913 571 d.914 572

20. Structural Collapse Awareness 20 Knowledge Check A nearby rescue crew has located additional victims needing immediate attention. Your crew has been asked to report to the other crew’s location at Point B. Identify the coordinates in which you’ve been asked to report. a.578 915 b.578 921 c.917 578 d.577 917

21. Structural Collapse Awareness 21 Knowledge Check (Answer)‏ A nearby rescue crew has located additional victims needing immediate attention. Your crew has been asked to report to the other crew’s location at Point B. Identify the coordinates in which you’ve been asked to report. a.578 915 b.578 921 c.917 578 d.577 917

22. Structural Collapse Awareness 22 Summary In this lesson, you have learned: Why the U.S. National Grid (USNG) was developed How to find a location within a devastated area if given the USNG coordinate How to read a USNG to find and relay the grid coordinate for a location