Rule 1060e. Section 301.1 and Tables 301.1 and 301.3(2) of the code are amended and Figure 301.1a is added to the code to read as follows:
301.1 General. Climate zones from figures 301.1, 301.1a or table 301.1 shall be used in determining the applicable requirements of this code.
Table 301.1
Climate Zones by County
Zones | ||
5A | 6A | 7 |
Allegan | Alcona | Baraga |
Barry | Alger | Chippewa |
Bay | Alpena | Gogebic |
Berrien | Antrim | Houghton |
Branch | Arenac | Iron |
Calhoun | Benzie | Keweenaw |
Cass | Charlevoix | Luce |
Clinton | Cheboygan | Mackinac |
Eaton | Clare | Ontonagon |
Genesee | Crawford | Schoolcraft |
Gratiot | Delta | |
Hillsdale | Dickinson | |
Ingham | Emmet | |
Ionia | Gladwin | |
Jackson | Grand Traverse | |
Kalamazoo | Huron | |
Kent | Iosco | |
Lapeer | Isabella | |
Lenawee | Kalkaska | |
Livingston | Lake | |
Macomb | Leelanau | |
Midland | Manistee | |
Monroe | Marquette | |
Montcalm | Mason | |
Muskegon | Mecosta | |
Oakland | Menominee | |
Ottawa | Missaukee | |
Saginaw | Montmorency | |
Shiawassee | Newaygo | |
St. Clair | Oceana | |
St. Joseph | Ogemaw | |
Tuscola | Osceola | |
Van Buren | Oscoda | |
Washtenaw | Otsego | |
Wayne | Presque Isle | |
Roscommon | ||
Smiilac | ||
Wexford |
Key: A - Moist. Absence of moisture designation indicates moisture regime is irrelevant.
Table 301.3(2)
Climate Zone Definitions
Zone Number | Thermal Criteria | |
IP Units | SI Units | |
5A | 5400 < HDD65oF[LESS THAN EQUAL TO]7200 | 3000 < HDD18oC [LESS THAN EQUAL TO] 4000 |
6A | 7200 < HDD65oF[LESS THAN EQUAL TO]9000 | 4000 < HDD18oC [LESS THAN EQUAL TO] 5000 |
7 | 9000< HDD65 oF[LESS THAN EQUAL TO]12600 | 5000 < HDD18oC [LESS THAN EQUAL TO] 7000 |
For SI:oC = [(oF)-32]/1.8
Mich. Admin. Code R. 408.31060e