While it’s not rocket science to set a post into the ground, careful consideration should be given to this phase of the work. Most manufacturers of post-setting materials suggest a hole diameter 3 times that of the post. This is a good rule for secure footers, but what about the depth? According to local architects, the first foot of soil in the Dallas area is considered unstable. Thus, if the post needs a sound two-foot-deep footer, then the post needs to be set three feet deep.
Other factors to consider are rocks, roots, and the occasional pocket of sandy or loose soil. All of these require special techniques if the desired result is a secure and hidden installation that matches the craftmanship of the above-ground finished product.