Study Of Two And Three Floor Portal Building Made Of Reinforced Concrete Material
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The aim of this research was to make a comparison of two and three floors of reinforce concrete portal design, and the possibility of the addition one floor next above the two floors building base on building safety. Research carried out by taking the example of two office building portals constructed in the earthquake zone-one. Both portals made from the same sketch plan and designed in the full elastic system. The load combinations (dead load, live load, and earthquake load) were subjected to both portal. The loads complied with the Indonesian Code (Tatacara Perhitungan Struktur Beton Untuk Bangunan Gedung, SNI 03-2847-2002). The dimension of portal structures (beam, column, sloof, and foundations) and their reinforcements were properly designed to carry the loads. Based on the dimension of portal and their reinforcement obtained, a comparison may be made up of total reinforcing and spacing of begel on both portals, and the possibility of the addition one floor next above the two floors building. The results showed that the dimensions of the structure (beam, column, sloof, and foundation) or three floors portal was bigger than two floors, the total of longitudinal reinforcement was more, and the begel space of edge beam was more tightly. Moreover, the addition of one floor next above the two floors would make the dangerous to safety of its and user.