1
2
3
4
5
6
7
8
9
10
11
12
2.1 2.2 2.2.1 13
2.2.2 2.2.3 14
2.3 2.3.1 2.3.2 all or nothing 2.4. 2.4.1 15
i) ii) iii) iv) 2.5 2.4.2 2.2 2.5 2.5.1 16
2.5.2 2.6 2.6.1 2.4 2.6.2 2.6.3 2.6.4 17
18
3.2.1 Hazard Risk Hazard Risk Risk Hazard 19
A B, C 23 100 200 8 Hazard Risk 1999 18 20
1999 1 100mm 10 1 2 NTT 1999 1997 2 1 300 10 NTT 21
3 10 10 5 22
23
1994 Northridge 5 24
25
26
3 3 1 1 1 1 27
28
29