Plan View Paving Bonds

To remind myself of some of the bonds I learnt towards the begging of uni I decided to practise drawing scale examples of paving bonds. The patterns I drew all use 200x100x50mm concrete blocks.

This is one of the trickiest drawings I've done to scale, mainly due to the repetitive and sometimes complex brick patterns. The best way I found to draw them quickly was to mark every 10mm on each edge of a square and then create a grid in pencil which I could then draw the bond pattern over in pen.