2018-03-14_PERMIT FILE - M2017049 ‎(9)‎

• Permit No: M2017049
• IBM Index Class Name: PERMIT FILE
• Doc Date: 3/14/2018
• Doc Name Note: Part 2 of 2
• Doc Name: Adequacy Review Response
• From: Transit Mix Concrete Co.
• To: DRMS
• Email Name: TC1
• Email Name: ERR
• Email Name: WHE
• Email Name: AME
• Email Name: PSH
• Email Name: ECS
• Media Type: D
• Archive: No

Table 2-3. Values of Fa as a Function of Site Class and Mapped Short-Period Spectral Response
Acceleration SS
Site Mapped Spectral Acceleration at Short-Period S,
Class
SS :5 0.25 SS = 0.50 SS = 0.75 SS = 1.00 SS 2: 1.25
A 0.8 0.8 0.8 0.8 0.8
B 1.0 1.0 1.0 1.0 1.0
C 1.2 1.2 1.1 1.0 1.0
D 1.6 1.4 1.2 1.1 1.0
E 2.5 1.7 1.2 0.9 0.9
F Site-specific geotechnical and dynamic site response analyses shall be
performed
Note: Use straight-line interpolation for intermediate values of Ss
For Site Class = E and SS = 0.209 g, Fa = 2.500
Table 2-4. Values of F as a Function of Site Class and Mapped Spectral Response Acceleration at
1 s Period S1
Site Mapped Spectral Acceleration at 1 s Period S,
Class
S, :5 0.10 S1 = 0.20 S, = 0.30 S1 = 0.40 S1 >- 0.50
A 0.8 0.8 0.8 0.8 0.8
B 1.0 1.0 1.0 1.0 1.0
C 1.7 1.6 1.5 1.4 1.3
D 2.4 2.0 1.8 1.6 1.5
E 3.5 3.2 2.8 2.4 2.4
F Site-specific geotechnical and dynamic site response analyses shall be
performed
Note: Use straight-line interpolation for intermediate values of S,
For Site Class = E and Sl = 0.071 g, F„ = 3.500