[Porsche-O-Phile]

Modular bricks are pretty small relative to the size of anchor bolts that will be required to hold down the sill. The problem with brick is not their load-carrying capacity in compression (they're plenty strong for that), it's that they've got to pick up other loads in this particular application:

When the walls are laterally loaded (wind) the sideways load placed on the anchor bolts is more likely to "blow out" a brick with an anchor bolt and hole in it than a concrete foundation wall with deeper embedment of the same anchor bolt. You're depending on the strength of the mortar, ultimately.

I'd seriously rethink your edge-of-slab condition. Thicken it up with concrete and use the brick as a veneer if you really want the look of it. Either that or make the edge-of-slab REALLY thick (below grade) and use long-ass anchor bolts anchored into the thickened-up edge-of-slab (concrete) and then extending up through the brick (grouted in place) with the sill bearing on that. That'd probably work okay too, but you'd need some serious embedment of the anchor bolts.

I also agree the bricks would be stronger oriented in standard (stretcher course) configuration, not the rowlock configuration like you have it. I'd be a bit concerned about the mortar blowing out over time and having the bricks push outward. It also leaves an even smaller amount of brick material left on either side of an anchor bolt hole, since you're drilling through the brick the long way).

I see that you're trying to match the look of the existing house with the brick "foundation wall", but I'll bet that brick is veneer only. If the house is really sitting on brick-only foundation, I'm shocked that it hasn't failed yet.