Illustrated Companion to the Latin Dictionary/Intertignium

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

INTERTIG'NIUM. The space between the ends of the tie beams (tigna, BBB. in the example (Intertignium/1.1)) which rest upon the architrave (trabs, A) in the timber-work of a roof. (Vitruv. iv. 2. 2. and 4.) Six of these are here shown; and in the earliest buildings these intervals were left open; but, subsequently, they were covered over with slabs of marble, so as to form part of a continuous frieze (zophorus), or to form a metope (metopa) in the Doric order.

• 
  Intertignium/1.1