6325flat archesTTen-USVocabulário Colaborativo em Artes e Arquitetura active approved flat archesArches in which neither intrados nor extrados has any curvature, yet is composed of voussoirs arranged so that lateral thrusts are generated from vertical loads; for arches with very slight curvature, use "camber arches."

Source: Art & Architecture Thesaurus

http://vocab.getty.edu/page/aat/300001015

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