Mich. Admin. Code R. 408.30521 - Elevation requirements
Rule 521. Section R322.2.1 of the
R322.2.1. Elevation
requirements.
(1) Buildings and structures
shall have the lowest floor including basements elevated so the lowest point of
the floor's concrete or subfloor surface is 1 foot (305 mm) or more above the
design flood elevation. The bottom of the lowest horizontal structural member
of the floor system shall not be lower than the design flood elevation.
Compliance with this elevation requirement shall be based upon measurement
taken from the floor surface without the final floor covering and from the
bottom of the lowest horizontal structural member of the floor
system .
(2) Crawl space interior
floor grade elevation shall comply with R408.6 of the code .
(3) Basement floors that are below grade on
all sides shall be considered lowest floors and shall be elevated so that the
lowest point of the floor surface is 1 foot (305 mm) or more above the design
flood elevation.
Compliance with this elevation requirement shall be based upon measurement taken from the floor surface without the final floor covering.
Exception: Enclosed areas below the design flood
elevation, including basements that have floors which are not below
Notes
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