Back of the Envelope

Back of the Envelope
Topics
Software

Software

Kindness and integrity Masonry Visions and missions Software Foundation Abundance Concrete Wood Technical AI Wind Seismic Steel Learning and teaching Non-technical

Visions and missionsVisions and missions

+5+5

Envelope #21: Site Class D in ETABS and a dad joke

Envelope #21: Site Class D in ETABS and a dad joke

Andy Lin

SoftwareSoftware

+2+2

Envelope #4: P-delta diverging error was literally crushing my soul

Envelope #4: P-delta diverging error was literally crushing my soul

Andy Lin

Back of the Envelope

Discover what’s working (and what’s hype) in structural engineering & AI -- in just 5 minutes a week

Home

Posts

Authors

© 2025 Back of the Envelope.

Privacy policy

Terms of use