Motif

Opus Romano pattern — free hatch (.pat), texture & 3D tiles

Opus Romano is a stone layout built from 10 tiles per repeat (sizes 400 × 400, 400 × 200, 600 × 600 mm (+2)), repeating on the lattice a = (1200, 0) mm, b = (0, 1200) mm, a cell of 1440000 mm². The seamless texture repeat is 1200 × 1200 mm. Download it as a CAD hatch, a seamless texture or SVG and DXF lines, count the tiles for your room, or build it as real 3D tiles in SketchUp. All free.

Opus Romano tile pattern: tiles drawn with their joints

Opus Romano in numbers

CategoryStone, paving and cobble
Tiles in one repeat10
Lattice vector a(1200, 0) mm
Lattice vector b(0, 1200) mm
Repeat cell area1440000 mm²
Tile sizes400 × 400, 400 × 200, 600 × 600, 600 × 400, 200 × 200 mm
Seamless texture repeat1200 × 1200 mm
Default smallest tile side200 (range 20–1000)

Free downloads for Opus Romano

Hatch units are millimetres at the default tile size. For other sizes use the hatch page or the editor, which exports every format at the size you set.

Opus Romano tile calculator

Enter the room, grout and tile size. The count comes from the same engine that lays the 3D tiles, so the cut tiles are real cuts against your room edges (a 4 × 3 m room is shown first). More patterns: tile calculator.

Full tiles
76
Cut tiles
18
Whole tiles used
94
Area (net)
12 m²
Tile area bought
14.44 m²
Waste from cuts
20.3 %
Tiles to order
104
Tiles by size
SizeFull tilesCut tiles
400 × 400 mm182
400 × 200 mm174
600 × 600 mm66
600 × 400 mm126
200 × 200 mm230

Open it in the editor or in SketchUp

Open Opus Romano in the editor

Use it in SketchUp (10 free uses a day) motif.rbz

Questions about Opus Romano

How many Opus Romano tiles do I need for a 4 × 3 m room?

With the default tile size and a 3 mm joint, a 4 × 3 m floor needs 76 full tiles and 18 cut tiles (94 whole tiles counting each cut tile as one). The net area is 12 m² and the tiles bought cover 14.44 m², so cutting alone wastes 20.3 %. Enter your own room and tile size in the calculator on this page.

Is the Opus Romano hatch exact?

Yes. The .pat file draws the tile edges exactly: every edge direction of this pattern is parallel to a lattice vector, so a PAT line family reproduces it without approximation. Units are millimetres and the pattern name inside the file is opus-romano.

How do I use the .pat file in AutoCAD?

Copy the .pat file into a folder that is in AutoCAD's Support File Search Path (Options > Files), keep the file name (the pattern name inside the file matches it), then pick the pattern in the HATCH command. If Windows blocks the download, right-click the file, open Properties and tick Unblock.

How do I use the .pat file in Revit?

In Revit open Manage > Additional Settings > Fill Patterns, click New, choose Custom and browse to the .pat file. Use the model variant when the pattern must keep its real size on the building.

What is the repeat size of Opus Romano?

One repeat of the lattice covers 1440000 mm² with 10 tiles. The smallest rectangle that repeats seamlessly in both directions, which is what a texture image needs, is 1200 × 1200 mm at the default sizes.

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