Floodplain Management in Illinois - Illinois Department of Natural ...
Floodplain Management in Illinois - Illinois Department of Natural ...
Floodplain Management in Illinois - Illinois Department of Natural ...
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Enclosures Below the BFE<br />
NOTE:<br />
TOTAL OPENING AREA IS 1 SQ. IN.<br />
PER SQ. FT. A 25' X 45' BUILDING<br />
NEEDS 1125 SQ. INCHES OF<br />
OPENINGS<br />
LOWEST<br />
FLOOR<br />
BFE<br />
INTERIOR GROUND<br />
LEVEL AT OR<br />
ABOVE<br />
OUTSIDE GRADE<br />
CRAWLSPACE<br />
BUILDING<br />
AT LEAST TWO FLOOD OPENINGS<br />
ON DIFFERENT SIDES<br />
NO MORE THAN 1'<br />
ABOVE GROUND<br />
Solid perimeter wall foundations can enclose flood-prone space. A crawlspace is a good way to elevate<br />
just a couple <strong>of</strong> feet. In all cases, the follow<strong>in</strong>g are required: open<strong>in</strong>gs/vents, elevated utilities,<br />
flood resistant materials, and limitations on use.<br />
26<br />
ILLINOIS QUICK GUIDE
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