Classification of period of construction
Status: This standard was approved as a departmental standard on August 25, 2021.
Classification structure
| Code | Category |
|---|---|
| 1 | 1920 or before |
| 2 | 1921 to 1945 |
| 3 | 1946 to 1960 |
| 4 | 1961 to 1970 |
| 5 | 1971 to 1980 |
| 6 | 1981 to 1990 |
| 7 | 1991 to 1995 |
| 8 | 1996 to 2000 |
| 9 | 2001 to 2005 |
| 10 | 2006 to 2010 |
| 11 | 2011 to 2015 |
| 12 | 2016 to 2021 |
- Date modified: