Custom Hatch Pattern for 15x40 Concrete Blocks — Can't Get It to Work"

[pemattosarq]

Hi everyone,

I'm trying to create a custom hatch pattern in AutoCAD to represent concrete blocks sized 15x40 cm in a stretcher bond layout (alternating vertical joints between rows). I’ve successfully used a pattern for 20x40 blocks that looks like this:

*PM-B2040, 8x16 block elevation stretcher bond
0, 0, 0, 0, 20
90, 0, 0, 20, 20, 20, -20

This works perfectly — it creates horizontal lines every 20 cm and vertical joints that alternate every row, simulating real masonry.

Now I want to adapt this to 15x40 blocks, but every variation I’ve tried either distorts the pattern, misaligns the joints, or causes the hatch to disappear entirely. I’ve tried adjusting the vertical spacing and repetition vectors, but nothing seems to work reliably.

*PM-B1540, 15x40 block elevation stretcher bond
0, 0, 0, 0, 15
90, 0, 0, 15, 20, 40, -40

[vinodkl · Accepted solution]

Hello @pemattosarq 

Please try the below code:
*PM-B1540, 15x40 block elevation stretcher bond
0, 0, 0, 0, 15
90, 0, 0, 15, 20, 15, -15

[richard_387]

Perhaps this picture will help you understand where the dimensions come from.

[Kent1Cooper]

You can make a running-bond pattern in any tile/brick/block element size you want, with RunningBondHPG.lsp, >here<.  [HPG stands for Hatch Pattern Generator.]  It can even do them with any amount of stagger between courses you like [including, by default, plain half-unit stagger of standard running bond].