EM 1110-2-1100 (Part II)
30 Apr 02
EXAMPLE PROBLEM II-8-1
FIND:
Wind speed with 25- and 50-year return period (10-min average at 10-m elevation).
GIVEN:
Maximum wind speed by month (10-min average measurement at 10-m elevation) in Table II-8-9.
Table II-8-9
Maximum Wind Speed by Month, in m/s
Month
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1969
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20
19
17
11
15
13
15
14
18
18
1970
22
16
18
18
12
14
12
13
11
21
19
22
1971
24
18
24
18
17
16
11
14
16
22
21
20
1972
20
19
18
20
16
15
14
14
20
15
17
23
1973
18
15
18
14
15
13
15
12
19
17
22
20
1974
24
18
23
15
12
17
20
10
11
12
16
22
1975
21
25
22
14
18
12
13
12
12
20
20
22
1976
18
19
22
13
12
13
13
10
11
13
11
13
1977
10
18
19
10
14
13
10
13
12
12
16
23
1978
21
13
11
15
14
10
10
10
10
9
13
15
1979
16
22
15
16
15
11
14
11
14
18
14
18
1980
20
15
23
15
11
11
15
10
11
13
20
21
1981
12
19
15
13
12
14
13
8
12
15
18
20
1982
14
13
7
10
11
10
12
9
11
17
14
21
1983
14
18
17
11
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SOLUTION:
Three options are presented on the following pages.
(Sheet 1 of 4)
Hydrodynamic Analysis and Design Conditions
II-8-21