Quadrant-based Fiorelli-style system anchored at the Cardo Maximus / Decumanus Maximus intersection.
Four intramural quadrants (NW, NE, SW, SE) with insulae numbered outward from the axes.
Format: TIMG.NW.I5 (site.quadrant.insula), with optional house suffix .H3 for multi-unit insulae.
Click any block to see concordance details. Purple G:## = Germain 1969 insula number.
Format: TIMG.{Quadrant}.I{n} (e.g., TIMG.NW.I1 = insula at the NW corner of the CM/DM intersection). For individual houses within an insula, append .H{n} (e.g., TIMG.SE.I20.H1).
Quadrant origin: The Cardo Maximus (between C5-C6) and Decumanus Maximus (between R6-R7) divide the Trajanic city into four quadrants. Insula I1 in each quadrant is the block touching both axes.
Numbering direction: Insulae are numbered outward from the CM/DM intersection, proceeding row by row toward the city walls.
Quadrant sizes: NW = 5 cols x 6 rows = 30 insulae. NE = 6 cols x 6 rows = 36 insulae. SW = 5 cols x 6 rows = 30 insulae. SE = 6 cols x 6 rows = 36 insulae. Total = 132.
Building prefixes: H = House (domestic), P = Public building (forum, theatre, library), B = Baths (thermal complexes). A temple at TIMG.SE.I4 would have no house suffix.
Extramural quadrants: E-NW, E-NE, E-SW, E-SE mirror the intramural divisions for houses outside the Trajanic walls.
Merged insulae: Listed at both grid positions (e.g., Piscina spans SW.I2 + SW.I7).
Purple G:## labels = Germain 1969 insula number. Boustrophedon confirmed for R1-R6, computed for R7-R12.
Sources: Wilson 2001 annotated plan (C1-C11 x R1-R12 grid); Germain 1969 numbered plan and mosaic catalog; Ballu 1903 street-by-street descriptions (Houses 1-31 + Sertius + Hermaphrodite); Ballu 1911 quarter descriptions; Rebuffat 1969/1974 peristyle house catalog. Quadrant system modeled on the Fiorelli system used at Pompeii, anchored to the principal urban axes.