I figured this out.
If you follow through with the exceptions in 11.4.8, stubby structures (low building periods) can still be designed with ELF with additional requirements. I think the 2nd exception is the most confusing, but all it's saying is if your building period, T, is less than 1.5Ts...
I also saw this happening recently when I'm using the new Hazard Tool. Good find on that code requirement, but this still doesn't make sense.
We do simple designs on simple structures using ELF every week, and 99% of those do not have geotechnical reports, let along a site-specific seismic...
