Redesign of the Sophos School Indonesia BSD School Building Using a Steel Structure with a Special Moment Bearing Frame Structure Method

The redesign of the Sophos School Indonesia, BSD School Building was carried out using a steel structure with a Special Moment Resisting Frame (SRPMK) system in accordance with SNI 1726:2019, SNI 1727:2020, and SNI 1729:2020. This study aims to determine the dimensions of the steel profile and evaluate the structural performance against earthquake loads and other loads through the Load and Resistance Factor Design (LRFD) method with ETABS software. The object of the study is a 4-story school building with a height of 19.55 m with a span of 28.8 m × 18 m and a main structure of BJ-41 quality steel beams and columns. The loads calculated include dead, live, wind, and earthquake loads. The analysis results show that the steel profile used meets the safety requirements, with mass participation achieved in the 18th mode, maximum inter-story drifts of 39.472 mm (X) and 34.639 mm (Y) which are still below the SNI limit, and the P-Delta effect shows a stability ratio <0.1. Thus, this four-story school building is feasible to be built using a steel structure with the SRPMK system, which meets Indonesian earthquake resistance standards.