Reliability Analysis of Commercial Buildings Post-Certificate of Functional Reliability through Document Compliance Evaluation against Technical Standards in X Regency

Abstract. The rapid economic growth in South Kalimantan has driven massive development of commercial facilities. To ensure building safety and reliability, the government mandates the possession of a Certificate of Functional Worthiness as evidence of compliance with technical standards. However, discrepancies are frequently found between administrative documents and the actual operational conditions in the field following the certificate issuance. This research aims to evaluate the compliance of technical documents for three commercial buildings in Regency X against the latest technical standards, as well as to analyze the implications of spatial function changes on structural reliability and user safety. The method employed in this study is a non-destructive visual comparative analysis. The research was conducted by juxtaposing secondary data, consisting of As-Built Drawings and technical assessment reports, against the results of observational field inspections of existing conditions. The evaluation focuses on the conformity of architectural spatial planning, the validation of structural design load assumptions resulting from functional conversion, and the reliability of fire protection systems. The results indicate significant adaptations of spatial functions in the three case studies, such as the conversion of retail areas into places of worship and the utilization of mezzanine areas inconsistent with the initial plan. These changes result in discrepancies between the live load assumptions and safety requirements stated in the documents compared to the actual conditions. Based on these findings, the building functionality status is categorized as Conditionally Eligible, requiring the owner to undertake Corrective Actions. This study recommends the implementation of risk-based technical verification and continuous monitoring to ensure long-term building reliability.