Depending on which national code is chosen (CSA , NESC or GO95), various ground clearance settings for Communication Attachments are permitted to be overridden and increased. This is helpful where you want to ensure that you have more than the bare minimum clearances required by the applicable standard to your own organizational standards or that of the structure owner. These values can be raised above the minimum, but cannot be decreased. In the Analysis of a project, communication attachments will be evaluated for ground clearance against these values, if they are overridden. The individual items are self-explanatory and may be explained further in the applicable standard.