Hamlin, A. D. F. (Alfred Dwight Foster), 1855-1926 · New York [etc.] Longmans, Green, and co. · leaf 116
marble ma-sonry, by carving false joints upon anexternal veneer of thin slabs of thatmaterial. Ordinary concrete wallswere frequently faced with small blocksof tufa, called, according to the man-ner of its application, opus reticulatum^opus incertum^ opus spicatum^ etc. (Fig.48). In most cases,… … FIG. 48.—ROMAN WALL MA-SONRY. a, Brtckiuork; ^, Tn/aashlar; r, Opus reticu-latum: /, Opus incertum. 84 HISTORY OF ARCHITECTURE. where they served only as facings. Bricks were also usedin the construction of skeleton ribs for concrete vaults oflarge span. VAULTING. Here, as in the wall-masonry,…
Architecture -- History
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