FMI MASONRY FIREBOX MM33 - Manual (Page 43)

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Appendi
x
II
FIGURE R301.2(3) WEATHERI
NG PROBABILITY
MA
P
FOR
CONCRETE
a. Alask
a
and
Hawaii
are
classified
as severe and negligible, respectively
.
b. Lines defining areas are approximate
only. Local conditions may be more or less severe
than
indicate
d by region classificati
on. A
severe
classificatio
n
is
w
here
weather
conditions
result
in
significant snowfall combined with extended periods during which there
is
little
or no natural thawing causing deic
ing salts to be used extensively.