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- Envelope #21: Site Class D in ETABS and a dad joke
Envelope #21: Site Class D in ETABS and a dad joke
Happy Thursday! Andy from Back of the Envelope here. It’s been almost a month since the last email 😅 – life got busy, but it’s time to get back on it again!
In today’s email (three unrelated topics):
Why you may need to be careful when using Site Class D in ETABS
Competition vs. cooperation vs. collaboration
Dad jokes!
(Estimated reading time = 3 minutes and 24 seconds.)
![](https://media.beehiiv.com/cdn-cgi/image/fit=scale-down,format=auto,onerror=redirect,quality=80/uploads/asset/file/b7754ae8-9f88-42d0-85ad-77d069ffd331/giphy.gif)