I have a problem accepting the pier post design of having the post set on the pre-formed concrete pyramid with a steel fitting to nail into the end of the 4x4 post. This seems to be a weak link, both because the very end of the 4x4 tends to splinter when nailed that close to the end, leaving it susceptible to moisture, and secondly steel rusts. I have used a method of driving 12 penny nails halfway into the 4x4 where it is to be buried. I dig the hole below frost line, put in 4 inches of gravel, pour in 2 or 3 inches of cement, place the spiked post in, and fill the hole with cement 3 to 4 inches over grade. I have used this method for a pole building garage, and two large sheds. I removed the one shed after about 12 years and there was no deterioration of the posts and they were almost impossible to remove. From an engineering standpoint is this an acceptable way to build. Please comment. Ar