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ASCE 7-16 Section 11.4.8 Site Class D Exception

ASCE 7-16 Section 11.4.8 Site Class D Exception

ASCE 7-16 Section 11.4.8 Site Class D Exception

I am sure there has been plenty of discussion regarding this section of ASCE 7-16, however I have not been able to locate a clear answer. I am looking at section 11.4.8, Exception (2) that discusses Site Class D sites with S1 greater than 0.2.

As I read the exception, I believe it says:
If the structure period (T) is less than 1.5*Ts, then calculate Cs per Eq12.8-2 as normal.
If the long period transition (TL) is greater than the structure period (T), and the structure period is greater than 1.5*Ts than Cs is 1.5*Eq12.8-3.
If the structural period (T) is greater than TL, than calculate Cs is 1.5*Eq12.8-4

I also assume that seismic design per chapter 13 and 15 is unchanged, except where chapter 15 references the requirements of Section 12.8.

Am I reading this correct - If T < 1.5*Ts then calculate Cs per section 12.8 as usual?

Thanks in advance.

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