Experiments in Gothic Structure

evidence

Photoelastic model studies of Gothic structures arguing that wind loading on the high roof and clerestory, rather than vault thrust alone, was a principal design driver for flying buttresses, and that upper flyers are best explained as wind bracing. V55 verification basis: real and widely cited; not read in this session, and the argument is summarised here from its reception rather than from the text.

A evidence is not a place. Drawing it on a map would assert something about the world that no stored fact supports.