[LouieFisk]

“Eighteen-story buildings made of timber already exist in Vancouver and Minneapolis”
—
Dunno about Vancouver, but I think the tallest wood building in Minneapolis is the T3 building - which is 7 stories.
Though 18 stories would make one heck of a bonfire if the wiring goes haywire.

[LouieFisk]

T3 Building, Minneapolis

[cuban leaf]

One word: Termites.

[outofsalt]

Brock tower https://www.archdaily.com/879625/inside-vancouvers-brock-commons-the-worlds-tallest-timber-structured-building