References
Step
Procedure
FEMA 302
TI-809-04
A. Preliminary Determinations
(See Flow Chart in Figure 4-1)
1.
Determine appropriate Seismic Use Group,
Sec. 1.3
Table 4-1, Table 4-4
Performance Objectives & Analysis Procedures
para. 4-2
2.
Determine site seismicity, (SS&SI)
MCE Maps
para. 3-1c
3.
Determine site characteristics
Sec. 4.1.2.1
Table 3-1
para. 3-4i
4.
Determine site coefficient: Fa
Table 4.1.2.4.a
Table 3-2a
Fv
Table 4.1.2.4.b
Table 3-2b
para. 3-1d
5.
Calculate
SMS = FaSs
Eq. 4.1.2.4-1
Eq. 3-1
SMI = FVSI
Eq. 4.1.2.4.-2
Eq. 3-2
6.
Calculate
SDS = 2/3 SMS
Eq. 4.1.2.5-1
Eq. 3-3 Eq. 3-6
SDI = 2/3 SMI
Eq. 4.1.2.4-2
para. 3-2b
7.
Select Seismic Design Category
Table 4.2.1a
Table 4-2a
Table 4.2.1b
Table 4-2b
para. 4-3
8.
Select structural system
para. 2-5b para. 2-5e
Select R, Ω o, & Cd factors
9.
Table 5.2.2
Table 7-1
para. 4-5
para. 6-2c
10.
Determine preliminary member sizes for gravity load
ASCE 7
ASCE 7
effects
para. 2-5a
B. Equivalent Lateral Force Procedure
(See Flow Chart in Figure 4-1)
1.
Calculate fundamental period, T
Eq. 5.3.3.1-1 or
Eq. 5.3.3.1-2
2.
Determine dead load, W
Sec. 5.3.2
3.
Calculate base shear, V
Eq. 5.3.2
para. 3-2c
4.
Calculate vertical distribution of seismic forces
Sec. 5.3.4.
5.
Perform static analyses
para. 5-2
6.
Determine cr and cm
Figure 7-47
7.
Perform torsional analyses
Secs. 5.3.5.1 to 5..3.5.3
para. 7-7b(4)
Determine need for redundancy factor, ρ.
8.
Sec. 5.2.4.2
para. 2-5c, para. 4-4
Determine need for everstrength factor Ω o
9.
Sec. 5.2.7.1
para. 4-5
10.
Calculate combined load effects
ASCE 7 and Sec. 5.27
para. 4-6
Table 4-5 Step-by-Step Procedures for Performance Objective 1A (Life Safety)
Sheet 1 of 2
4-11
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