Civil Engineering Reference
In-Depth Information
Table 4.10
Recommended three-level format for limit states of structural systems.
Performance level
Performance objectives
Performance criteria
Seismic hazard
Limit state
Structural
characteristics
Engineering
Socio - economic
Type
Prob.
exceedance
(in %)
Type
Prob.
event
(in %)
Serviceability
Stiffness
Non - structural
damage
Operational
Near elastic
response
P
c1
in
N
c1
years
Frequent
P
s1
in
N
s1
years
Damage
control
Strength
Moderate
structural
damage
Limited
economic loss
Limited
inelastic
response
P
c2
in
N
c2
years
Occasional
P
s2
in
N
s2
years
Collapse
prevention
Ductility
Severe
structural
damage
Life loss
prevention
Large inelastic
response
P
c3
in
N
c3
years
Rare
P
s3
in
N
s3
years
P
ERFORMANCE
L
EVELS
S
TRUCTURAL
R
ESPONSE
C
HARACTERISTICS
S
TIFFNESS
S
TRENGTH
D
UCTILITY
E
NGINEERING
L
IMIT
S
TATES
S
ERVICEABILITY
D
AMAGE
C
ONTROL
C
OLLAPSE
P
REVENTION
U
NACCEPTABLE
P
ERFORMANCE
U
NACCEPTABLE
P
ERFORMANCE
F
REQUENT
B
ASIC
E
SSENTIAL
/
HAZARDOUS
S
AFETY
C
RITICAL
F
ACILITIES
U
NACCEPTABLE
P
ERFORMANCE
O
CCASIONAL
R
ARE
N
ON
-S
TRUCTURAL
S
TRUCTURAL
E
NGINEERING
(D
AMAGE
-R
ELATED
)
M
ODERATE
S
EVERE
S
OCIO
-E
CONOMICAL
L
IMITED
E
CONOMIC
L
OSS
L
IFE
L
OSS
P
REVENTION
O
PERATIONAL
P
ERFORMANCE
O
BJECTIVES
Figure 4.40
Conceptual correlation matrix to identify performance levels
