UFC 4-150-02
12 May 2003
Table C-1 Regional Weather Data
AVERAGE
EXTREME
MEDIAN
AVERAGE OF 97 1/2%
JANUARY
MINIMUM
ANNUAL 97 1/2%
TEMP AND EXTREME
Temp
Temp
EXTREMES
Temp
MINIMUM
REGION (deg F)
(deg F)
(deg F)
(deg F)
(deg F)
DAYS
I
24
-30
-11
0
-15
1275
II
29
-14
1
10
-2
1125
III
34.5
1
7
15
8
950
IV
34.5
3
16
24
13
750
V
50.5
17
21
32
24
450
Table C-2 Freeze Protection by Insulation and Heating: Suggested Combinations
for Regions I and II
REGION I
REGION II
PIPE
INSULATION
INSULATION
SIZE
THICKNESS
THICKNESS
(inch)
(inch)
(watts/foot)
(inch)
(watts/foot)
2
1/2
6
1/2
6
3
1/2
6
1/2
6
4
1
6
1
6
6
1
6
1
6
8
1-1/2
6
1-1/2
6
10
1-1/2
6
1-1/2
6
12
1-1/2
6
1-1/2
6
C-3
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