Perencanaan Struktur Gedung Kejatisu

The structural design of multi-story buildings requires accurate analysis to determine the dimensions and reinforcement requirements of structural elements under various loads, including earthquake loads. This study aims to determine the dimensions and reinforcement requirements of the structural elements of the North Sumatra High Prosecutor’s Office (Kejatisu) Building, covering both the superstructure and substructure. The design process involved structural modeling and analysis using SAP2000, supported by calculations using Microsoft Excel and SP-Column. Seismic analysis was performed using the response spectrum method in accordance with SNI 1726:2019, while the structural design referred to relevant Indonesian national standards. The structural system adopted was the Special Moment-Resisting Frame System (SRPMK), with a medium soil classification (SD) and Seismic Design Category D. The analysis results indicated that the cumulative modal mass participation exceeded 90% at the 24th vibration mode. The superstructure design included column K1 with dimensions of 900 × 900 mm, column K2 with dimensions of 800 × 800 mm, beams with varying dimensions, floor slabs with a thickness of 170 mm, and stair slabs with a thickness of 200 mm. The substructure design comprised three pile foundation configurations with a pile depth of 24 m, with pile cap dimensions and reinforcement requirements adjusted to each type. This study produced a structural design outlining the dimensions and reinforcement requirements of the structural elements based on structural analysis and design calculations. The proposed design does not constitute verification of the original design or the actual condition of the existing building.