Page 88 - Advanced Design Examples of Seismic Retrofit of Structures

80 Advanced Design Examples of Seismic Retrofit of Structures

5:0 or other

2:0 4:0h eff L 2:0 2:0

CP 4.0 3.0 4.5 3h eff L 4:5h eff L

Level 3:75
Performance LS 1:5 3:0h eff L 3.0 2.0 3.0 2h eff 1:5 L 3h eff 1:5 L less than or equal to 4%, unless it can be demonstrated by analysis using moment curvature

1:5
1:0 1:5h eff L 1:5h eff 1:0 L 1:5h eff 1:0 L

Piers IO 1.0 1.0 1.0 acceptable means that toe crushing does not occur at the expected pier drift; otherwise, walls and wall piers shall be considered force controlled. Alternatively, nonlinear

and
Walls Confinement

In-Plane N.A. N.A. Unconfined Confined Unconfined Confined

URM used. be

for sliding sliding sliding should
LSP Mode
in Failure Rocking a Bed-joint Rocking Bed-joint Rocking Bed-joint a m-factors for rocking apply only for walls and wall piers with f a /f m 0 criteria
m-Factors acceptance

2.11 41-13 360-12 and

TABLE Code ASCE Code procedures