Discovering rainscreen subframes revealed me just how steel is the silent backbone: flexible brackets straighten airplanes
https://www.scribd.com/document/1041762894/Cupolas-with-a-Century-in-Mind-The-Instance-for-Hand-Fabricated-Copper-Craft-224458
Learning about rainscreen subframes showed me how steel is the silent backbone: adjustable braces line up aircrafts, handle drainage, and absorb structure motion gracefully.