With the base of crusher run and sand in place, now it's time to start setting brick. If your courtyard is centered on steps or another landmark, then set your first bricks at the centerpoint. As you set the bricks, keep a bucket of sand and trowel handy, and use them to fill in the gaps left by your one-inch pipes as you go. You may use a basket-weave pattern, which is two bricks in one direction, and then two bricks in the other. You can only do this type of pattern with a modular brick, which is of a length where two bricks side by side make a square.From the center point, keep setting bricks along the middle section of the courtyard, always following your string line to make sure the bricks are straight. As you set the bricks, keep a bucket of sand and trowel handy, and use them to fill in the gaps left by your one-inch pipes as you go. Tumbled bricks that, because of their characteristic distressed look, are slightly irregular in size. A good rule of thumb is that the lighter the color of the brick, the longer and wider it is. So as you set your bricks, you may want to step back occasionally and examine the pattern, switching out any bricks where necessary to ensure a nice mix of size and color. If your bricks line up slightly off, line up a wooden plank against their edge and whack it with a heavy hammer (such as a sledgehammer) to get the bricks back in line.