Wall anchor bolts..

Here you can see how I drilled about 90 holes all around the house, each about 6 1/2 inches deep. The process is as follows. Find a location every 30 inches, which is 3 inch's from the edge of the concrete. This is to prevent it from breaking out the concrete when its tightened finally. Then drill the hole to the depth we need. It needs to be at least 1/4 inch past the bottom of the bolt. We use compressed air to blow out the dust, use a bristle brush to clean out the hole and blow it out again. Then we hammer in the bolt. We aren't tightening them yet, because we would like to find larger size washers then they have come with.