Do you mean to map the image to repeat to look like a wall of bricks, or place just one instance of the image on the wall?
For wall of bricks: load the image into your Archicad Library and make a new material using the image as the texture.
For one image instance, make a thin curved wall applied to the larger, plain wall that is exactly the size of the brick image and apply the new material you created.
Dwight Atkinson