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EQE International
Earthquake
USA 1994
Northridge
Study
EQE International
Survey Location
3 MMI = VII Locations
location point (lat long)
34.21 -118.54
lat long accuracy
distance from epicentre (km)
6
usgs pga
59.6005
usgs pgv
58.5139
usgs mmi
8.48
usgs sdpga
0.5704
usgs svel
330
intensity usgs (0=n/a)
intensity eqe project (0=n/a)
7
notes
Since the data breakdown is according to MMI, not individual locations, the coordinate used is the epicenter's coordinate
Image Gallery
Damage Matrix
Percent Matrix
Building Classes
Damage Level Percentages of Total Damaged
.05-.3
.3-1.25
1.25-3.5
3.5-7.5
7.5-20
20-65
65-100
NA
Total
Wood Frame Pre-1941
5.36221590909091
17.0543323863636
19.1139914772727
15.3409090909091
16.7436079545455
4.38565340909091
1.23401988636364
20.7652698863636
100
Wood Frame 1941-50
6.54261704681873
24.0096038415366
2.1608643457383
14.0456182472989
12.2448979591837
3.06122448979592
0.600240096038415
37.3349339735894
100
Wood Frame 1951-60
10.6029106029106
18.7110187110187
15.9390159390159
9.56340956340956
7.48440748440748
1.48995148995149
0.900900900900901
35.3083853083853
100
Wood Frame 1961-76
11.7278216442174
19.6237807710172
15.8383650719926
8.40687412912215
6.22387366465397
2.36878773803994
0.859266140269392
34.9512308406874
100
Wood Frame Post-1976
14.2911877394636
18.3524904214559
13.0268199233716
6.66666666666667
4.21455938697318
2.18390804597701
0.574712643678161
40.6896551724138
100
Steel Frame Pre-1941
29.6296296296296
7.40740740740741
11.1111111111111
14.8148148148148
0
0
0
37.037037037037
100
Steel Frame 1941-56
50
16.6666666666667
0
16.6666666666667
0
0
0
16.6666666666667
100
Steel Frame 1957-76
26.6666666666667
6.66666666666667
10
3.33333333333333
0
6.66666666666667
0
46.6666666666667
100
Steel Frame Post-1976
22.8571428571429
20
2.85714285714286
2.85714285714286
2.85714285714286
2.85714285714286
0
45.7142857142857
100
Concrete Frame Pre-1933
20.9302325581395
34.8837209302326
11.6279069767442
4.65116279069767
4.65116279069767
4.65116279069767
0
18.6046511627907
100
Concrete Frame 1934-59
25
12.5
12.5
0
0
0
0
50
100
Concrete Frame 1960-76
21.6216216216216
13.5135135135135
8.10810810810811
2.7027027027027
2.7027027027027
0
5.40540540540541
45.945945945946
100
Concrete Frame Post-1976
25
16.6666666666667
8.33333333333333
8.33333333333333
0
8.33333333333333
0
33.3333333333333
100
Brick/Block/Other Concrete Pre-1933
18.2844243792325
18.961625282167
12.4153498871332
6.54627539503386
8.91647855530474
5.4176072234763
2.59593679458239
26.86230248307
100
Brick/Block/Other Concrete 1934-59
8.59375
17.96875
15.625
9.765625
4.6875
3.125
3.515625
36.71875
100
Brick/Block/Other Concrete 1960-76
13.4751773049645
14.1843971631206
13.4751773049645
5.67375886524823
2.83687943262411
2.83687943262411
0.709219858156028
46.8085106382979
100
Brick/Block/Other Concrete 1976-91
12.8712871287129
2.97029702970297
6.93069306930693
7.92079207920792
7.92079207920792
5.94059405940594
0
55.4455445544555
100
Brick/Block/Other Concrete Post-1991
20
20
0
0
0
20
0
40
100
Building Classes
Damage Level
.05-.3
.3-1.25
1.25-3.5
3.5-7.5
7.5-20
20-65
65-100
NA
Total
Wood Frame Pre-1941
604
1921
2153
1728
1886
494
139
2339
11264
Wood Frame 1941-50
109
400
36
234
204
51
10
622
1666
Wood Frame 1951-60
306
540
460
276
216
43
26
1019
2886
Wood Frame 1961-76
505
845
682
362
268
102
37
1505
4306
Wood Frame Post-1976
373
479
340
174
110
57
15
1062
2610
Steel Frame Pre-1941
8
2
3
4
0
0
0
10
27
Steel Frame 1941-56
3
1
0
1
0
0
0
1
6
Steel Frame 1957-76
8
2
3
1
0
2
0
14
30
Steel Frame Post-1976
8
7
1
1
1
1
0
16
35
Concrete Frame Pre-1933
9
15
5
2
2
2
0
8
43
Concrete Frame 1934-59
2
1
1
0
0
0
0
4
8
Concrete Frame 1960-76
8
5
3
1
1
0
2
17
37
Concrete Frame Post-1976
3
2
1
1
0
1
0
4
12
Brick/Block/Other Concrete Pre-1933
162
168
110
58
79
48
23
238
886
Brick/Block/Other Concrete 1934-59
22
46
40
25
12
8
9
94
256
Brick/Block/Other Concrete 1960-76
19
20
19
8
4
4
1
66
141
Brick/Block/Other Concrete 1976-91
13
3
7
8
8
6
0
56
101
Brick/Block/Other Concrete Post-1991
1
1
0
0
0
1
0
2
5
Total
2163
4458
3864
2884
2791
820
262
7077
24319
EQE's Own Damage Scale
Map Overlays
Study locations
Study Locations
1 MMI <VI Locations
2 MMI = VI Locations
3 MMI = VII Locations
4 MMI = VIII Locations
5 MMI = IX Locations