Motif

Double-T pattern — free hatch (.pat), texture & 3D tiles

Double-T is a stone layout built from 1 tile per repeat (sizes 200 × 165 mm), repeating on the lattice a = (200, 0) mm, b = (100, 135) mm, a cell of 27000 mm². The seamless texture repeat is 200 × 270 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.

Double-T tile pattern: tiles drawn with their joints

Double-T in numbers

CategoryStone, paving and cobble
Tiles in one repeat1
Lattice vector a(200, 0) mm
Lattice vector b(100, 135) mm
Repeat cell area27000 mm²
Tile sizes200 × 165 mm
Seamless texture repeat200 × 270 mm
Default length200 (range 60–600)
Default width165 (range 60–500)
Default notch depth / width0.1818181818 (range 0.05–0.4)

Free downloads for Double-T

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.

Double-T 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
429
Cut tiles
102
Whole tiles used
531
Area (net)
12 m²
Tile area bought
14.34 m²
Waste from cuts
19.5 %
Tiles to order
585
Tiles by size
SizeFull tilesCut tiles
200 × 165 mm429102

Open it in the editor or in SketchUp

Open Double-T in the editor

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

Questions about Double-T

How many Double-T 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 429 full tiles and 102 cut tiles (531 whole tiles counting each cut tile as one). The net area is 12 m² and the tiles bought cover 14.34 m², so cutting alone wastes 19.5 %. Enter your own room and tile size in the calculator on this page.

Is the Double-T 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 double-t.

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 Double-T?

One repeat of the lattice covers 27000 mm² with 1 tile. The smallest rectangle that repeats seamlessly in both directions, which is what a texture image needs, is 200 × 270 mm at the default sizes.

Related patterns

All stone, paving and cobble · All patterns