Classification of period of construction

Status: This standard was approved as a departmental standard on March 24, 2016.

Classification structure

Classification of period of construction - 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 2016
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