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Page Title:
Table 3-1 Summary Of Minimum Wind Design Criteria |
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|  DOE-STD-1020-2002
Table 3-1 Summary Of Minimum Wind Design Criteria
Performance Category
1
2
3
4
Hazard
-2
-2
-3
-4
Annual Probability
2x10
1x10
1x10
1x10
Of Exceedance
W
1.0
1.00
1.0
1.0
Importance
i
Factor
n
d
2x4 timber plank 15 lb
NA
NA
2x4 timber plank 15 lb
Missile Criteria
@50 mph (horiz.); max.
@50 mph (horiz.); max.
height 50 ft.
height 30 ft.
(1)
(1)
Hazard Annual
-5
-6
NA
NA
Probability of
2x10
2x10
Exceedance
Importance Factor
NA
NA
I = 1.0
I = 1.0
APC
NA
NA
40 psf @ 20 psf/sec
125 psf @ 50 psf/sec
T
2x4 timber plank 15 lb @150
2x4 timber plank 15 lb @100
o
mph (horiz.), max. height
mph (horiz.); max. height
NA
NA
Missile Criteria
r
200 ft.; 100 mph (vert.)
150 ft.; 70 mph (vert.)
n
a
3 in. dia. std. steel pipe, 75 lb
3 in. dia. std. steel pipe, 75 lb
d
@ 75 mph (horiz.); max.
@ 50 mph (horiz.); max.
o
height 100 ft, 50 mph (vert.)
height 75 ft, 35 mph (vert.)
3,000 lb automobile @
25 mph, rolls and tumbles
(1) These values for APC and tornado missile criteria are minimum and need to be revisited
after new tornado hazard curves are developed using Livermore methodology (Reference
3-14). These values may need to be upgraded to higher values depending on outcome of
tornado hazard analysis at each site. In the interim, it is recommended that for sites with
PC-3 facilities where Tornado wind speeds have substantially increased (above 175
mph), the APC and missile criteria for PC-4 should be used in lieu of Pc-3.
Forces due to missiles and Tornado wind effects should be combined appropriately
unless it can be justified that this is not deemed necessary. Such justification may
consider situations where the mode of failure does not require these forces to be
combined.
3-3
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