The March/April 2013 PAN introduced some of the concepts detailed in the ANSI/TIA-1019-A Standard for installation, alteration and maintenance of antenna supporting structures and antennas. This month’s PAN will delve into the construction process, defined by the contractor that will be completing the modification of the existing structure or erection of a new structure, as well as the engineering services that may be required from a qualified engineer to ascertain the static strength and stability of the structure.