Particles are removed from a surface of a gold conductive layer before forming an intermediate insulating layer of an amino silane compound. An integrated list of individual events is defined to include message-related events and time-organization-related events. An evaluation is periodically performed to determine whether the conditions are satisfied. In particular, the shear strength of the soil can be determined which enables the maximum pile capacity to be calculated without a detailed site investigation. The base is combined with the opening in a detachable manner.