Opus incertum

Opus incertum
Layers of opus incertum on the left side of the Temple of Iovis Anxur in Terracina, Italy.

Opus incertum was an ancient Roman construction technique, using irregular shaped and random placed uncut stones or fist-sized tuff blocks inserted in a core of Opus caementicium.

Initially it consisted of more careful placement of the coementa (rock fragments and small stones mixed with concrete), making the external surface as plain as possible. Later the external surface became further plain by reducing usage of concrete and choosing more regular small stones. When the use of concrete between stones is particularly reduced, it is defined opus (quasi) reticulatum.

Used from the beginning of the 2nd century BC until the mid-1st century BC, it was later largely superseded by Opus reticulatum.

See also



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  • Opus incertum — ● Opus incertum ouvrage de moellons de forme irrégulière, mais s ajustant entre eux. opus incertum [ɔpysɛ̃sɛʀtɔm] n. m. invar. ÉTYM. 1870; mots lat. signifiant « ouvrage irrégulier ». ❖ ♦ Techn. Empilage de moellons bruts sur mortier. || Des opus …   Encyclopédie Universelle

  • Opus incertum — Opus O pus, n.; pl. {Opera}. [L. See {Opera}.] A work; specif. (Mus.), a musical composition. [1913 Webster] Note: Each composition, or set of pieces, as the composer may choose, is called an opus, and they are numbered in the order of their… …   The Collaborative International Dictionary of English

  • Opus Incertum — Album par High Tone Sortie 2000 Durée 62 min et 26 s Genre Dub Label Jarring Effects …   Wikipédia en Français

  • Opus incertum — Incertum In*cer tum, a. Doubtful; not of definite form. [1913 Webster] {Opus incertum} (Anc. Arch.), a kind of masonry employed in building walls, in which the stones were not squared nor laid in courses; rubblework. [1913 Webster] …   The Collaborative International Dictionary of English

  • Opus incertum — Opus in|cer|tum [ in tsɛr...] das; <aus lat. opus incertum »unregelmäßiges Werk«> röm. Mauerwerk aus Bruchsteinen mit Mörtelguss …   Das große Fremdwörterbuch

  • opus\ incertum — [ ɔpysɛ̃sɛrtɔm ] n. m. inv. • 1870; mots lat. « ouvrage irrégulier » ♦ Techn. Empilage de moellons bruts sur mortier …   Encyclopédie Universelle

  • Opus incertum — Maçonnerie en opus incertum à Pompéi L opus incertum (appareil irrégulier) est réalisé avec des petits moellons en pierre de dimension et de forme irrégulières. Maçonnerie Il fut couramment employé dans les derniers siècles de la République… …   Wikipédia en Français

  • Opus incertum — In der römischen Antike wurden viele Techniken zum Bau einer Mauer (inklusive Fußböden und Decken) genutzt, ein Großteil von diesen wurde sogar neu geschaffen. Im Laufe der Zeit entstanden Mauerwerke wie: Opus albarium ist ursprünglich Stuck, der …   Deutsch Wikipedia

  • Opus incertum — Capas del opus incertum el flanco oriental de la terraza del santuario de Júpiter Ànxur en Terracina, en Lacio. Opus incertum (en latín, literalmente, obra irregular ) era una antigua técnica constructiva romana que usaba sillares cortados de… …   Wikipedia Español

  • opus incertum — ò·pus in·cèr·tum loc.s.m.inv., lat. 1. TS archeol. in Roma antica, muratura con pietre a vista, formata da piccoli pezzi di tufo o di altro materiale cementati tra loro con calce e disposti irregolarmente Sinonimi: opera incerta. 2. TS edil.… …   Dizionario italiano

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