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.
House data reads live from the project database, the same file that powers the house catalog.
Click any block for its database record and concordance. 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).
Extramural quadrants: E-NW, E-NE, E-SW, E-SE mirror the intramural divisions for houses outside the Trajanic walls. Houses that cannot yet be placed on the grid are listed under Unlocated.
Green cells mark insulae with at least one house in the project database. A thick border and ✓ mark houses whose full record is published in the catalog.
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; Ballu 1911 quarter descriptions; Rebuffat 1969/1974 peristyle house catalog. House assignments and records: the project house database (Edher 2026).