2.1. Mark locations for the 4″ × 4″ treated-wood posts at 8′ intervals; they are the pillars for your new fence.
2.2. Use a posthole auger to dig holes 8″ to 10″ in diameter and 3′ 6″ to 4′ deep for optimum stability and to prevent the posts from loosening when frost occurs. The distance between the holes must be 8′, centre to centre.
2.3. Lay a bed of 0-¾ crushed stone 6″ deep at the bottom of every hole.
2.4. Apply a wood preservative to the section of the posts that will be below-ground.
2.5. Insert a post, then use a carpenter’s level to make sure it’s vertically level.
2.6. Put in a foundation of concrete or stone dust enough to stabilize the post.
2.7. Maintain the post in a vertical position, and check that it’s vertically plumb.
2.8. The posts should be higher than the finished desired height; you can trim the posts once the installation is complete.
2.9. Fill the remainder of the cavity with stone dust up to ground level, and lightly water the surface to compact the stone dust. It is advisable to ask someone to help you for these steps. If you choose concrete, put the concrete mix and water into the portable mixer. Close the lid and mix for approximately 30 seconds. When it’s ready, pour the concrete in the holes. Note that you may also use premixed concrete.
2.10. Verify once more the distance between posts, which should be 8′, centre to centre.
Set the posts into the postholes
2.11. Make the concrete mound-shaped around the post; this will allow water to run off and not create a pool around the post.