- 1). Make sure the slab is square by measuring across the corners of the slab diagonally with a measuring tape. Ensure that both diagonal measurements are the same. Place the sill plate boards into position on the edge of the slab. Make adjustments in the sill plate to compensate for a slab that is not square, by measuring across the corners of the sill plate with a measuring tape and moving the sill plate boards in or out slightly as needed.
- 2). Measure in 2 ½" from the edge of the sill plate boards and drill through the sill plate and into the concrete slab using a hammer drill and a ½" carbide-tipped masonry drill bit. Drill the holes at least 2 ¼" deep and up to 4" deep. Place holes 12" from the ends of all sill plate boards, and make holes every 36" to fully secure the sill plate.
- 3). Mark the sill plate and the slab to make sure each section of sill goes back into the same location. Remove the sill boards and assemble your wall framing, making sure the sill is at the bottom of the wall and in the correct location according to your marks.
- 4). Raise the walls until they are plumb, using a level. Brace each wall with scrap lumber temporarily nailed to the wall and to a stake hammered into the ground about 6 feet from the building.
- 5). Place a washer and nut (included with the anchor) onto the threaded end of the anchor by hand to protect the threads. Place the anchor into the holes bored into the sill plate and slab. Drive the anchor into the concrete by hitting it with a hammer until the washer and nut almost touch the sill plate.
- 6). Run the nut on the anchor in by hand until it seats on the sill plate. Use an adjustable wrench and tighten the nut in a clockwise direction three or four full turns.
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