Structural design is essential to ensure the safety, stability, and serviceability of buildings, particularly in seismic regions. This study analyzes the structural system and evaluates the foundation design of the PLN UP3 Kotabumi Office Building in North Lampung, Indonesia. The building is a two-story reinforced concrete structure designed using a Special Moment Resisting Frame (SMRF) system. Structural analysis considers dead, live, and earthquake loads in accordance with SNI 1727:2020 and SNI 1726:2019, while reinforced concrete members are designed in accordance with SNI 2847:2019. The analysis evaluates beams, columns, slabs, lateral displacement, and the capacity of bored-pile foundations. The results show that the structural members satisfy the required strength and serviceability criteria, with maximum beam bending moment and shear force of 120 kNm and 85 kN, respectively, and maximum column axial force of 850 kN. The maximum lateral displacement is 18 mm at the roof level. The bored pile foundation, with a diameter of 0.6 m and a depth of 18 m, has an allowable bearing capacity of 900 kN, which exceeds the applied load of 750 kN. These results indicate that the proposed structural and foundation systems provide adequate safety and stability.
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