Back of the Envelope
Topics
Technical

Technical

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

ConcreteConcrete

+2+2

✉ Envelope #51: Size Effect Factor, AI Deep Research, and Hallucinations

Andy Lin

ConcreteConcrete

+2+2

Envelope #47: Bangkok skyscraper collapse

Andy Lin

ConcreteConcrete

+1+1

Envelope #30: “I feel like I should know this...” Concrete Refresher

Andy Lin

ConcreteConcrete

+2+2

Envelope #27: Changes to the “reduction of development length” that you might not know about

Andy Lin

TechnicalTechnical

+1+1

Envelope #26: Structural Irregularities “Cheat Sheet”

Andy Lin

MasonryMasonry

+6+6

Envelope #25: How do you keep track of IBC/CBC “Referenced Standards”?

Andy Lin

ConcreteConcrete

+2+2

Envelope #24: Turkey earthquake

Andy Lin

Visions and missionsVisions and missions

+5+5

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

Andy Lin

TechnicalTechnical

+1+1

Envelope #20: How to quickly determine the allowable height for interior, non-bearing, metal stud partition?

Andy Lin

TechnicalTechnical

Envelope #19: GFCI outlet and structural engineering?

Andy Lin

ConcreteConcrete

+1+1

Envelope #18: Super-Quick Concrete Beam Check

Andy Lin

ConcreteConcrete

+1+1

Envelope #16: Do you know the difference between A706 and A615 bars?

Andy Lin