Corner posts should be buried deeper to the ground at least 2 3 of the entire length of the post compared to your line posts at least 2 feet.
String line fence post.
Stretch mason string between the centers of all the batter boards to delineate the perimeter of the fence.
The outside edge of the stake should just touch the line.
Considering this your corner posts should be longer and if possible larger than your line posts.
To ensure the posts are even in height run a tight string line between corner posts and end posts.
Drop a post into each hole and line its face up with the string while you plumb it.
Measure the positions of the posts with a tape measure and drive a stake at each point.
In other words the string will run where the fabric or wood pickets will be located.
Using your string line you will run the string on the outside of the soon to be installed fence.
Well this is where you have to sort of take a guess or at least i did.
The lower string is to the ground without touching the ground the better.
Use a string line level or bench level to make sure the line is level then check to see that.
This can easily throw your fence line out of alignment.
Mark the positions of the line posts and dig a hole for each one directly under the string.
I like to use fast setting concrete for these posts.
The longer the run the tighter the string needs to be to stay straight.
Pulling a string it s really called mason s line tight between two points is the best way to build a fence straight and true.
The following formula will help you compute the number of fence posts you need.
At this point you pull the string to where you are placing the opposite end post.