Step 7: Cut remaining 4"x4" posts.

Go down each row measuring the distance between the bottom of the 2"x6" support board and the bottom of the slot of the Dek-Block® pier. Cut 4"x4" posts to length and position them between the support board and the Dek-Block® pier. Repeat this step until all 4"x4" posts are cut and positioned. Secure all support boards and 4"x4" posts using two 2 1/2" deck screws at an angle (toe screw) from each side.