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Office buildings are important infrastructure in supporting the development of an area, including skyscrapers in Jombang. The materials used to build this building are f'c = 25 MPa, fys = 240 MPa, and fy = 400 MPa. Besides the structure required to be able to withstand the existing earthquake load, for preventive measures to reduce disaster risk, the building is subjected to a variable analysis with a distance of 10 meters, 25 meters and 35 meters against the explosion load due to Trinitrotoluene with a weight of 500 kg. The analysis was carried out on the structure using the ETABS v18 application which refers to SNI 1726:2019 which regulates earthquake loads, SNI 1727:2020 which regulates live and dead loads, and SNI 2847:2019 which regulates reinforced concrete requirements. Then the explosion load is defined with reference to TM 5 – 1300 – 1990 with the Pythagorean system to find the value of Pre used to be the combined load for the extraordinary incident load (Ak). The applied moment resisting system uses a special moment resisting frame system. Drift is an important aspect of the structure because drift indicates a horizontal shift of the structure which affects the integrity of the joints of each element. The performance of the building structure against the blast load indicates that the blast load tested on the structure exceeds the drift limit, so that the integrity of the joints in the structure decreases and makes the structure brittle. This case study also makes efforts to reduce the collapse of structures due to blast loads by utilizing the drift that has been sought in the form of boundary fences.