Evaluation of the Lightning Protection System at the Khairun University Rectorate Building

Multi-story buildings must be equipped with lightning protection to prevent direct lightning strikes. This study aims to evaluate the lightning protection system in the Khairun University rectorate building using the rolling ball method. The estimated hazard of lightning strikes based on PUIPP is 14, so the Khairun University rectorate building needs SPP. With a height of 27 meters and an efficiency value of SPP E = 0.22. Thus, the Khairun University rectorate building is not known for its level of SPP needs. The rectorate building of Khairun University with the rolling ball method has a radius of protection known from the efficiency table for the value of 0.22 does not exist. Thus, the calculation of the radius of the protected area cannot be used. The ground resistance in the Khairun University rectorate building does not meet the PUIL 2000 standard with a standard value of not more than 5 Ohms.