Reinforced concrete is concrete that is given with extensive reinforcement and amount of reinforcement that is not less than the minimum value required, used for building structures that are able to withstand the forces that work. Planning office building structure using three concrete floors Bypass road town of Padang is intended to determine the dimensions of the floor plate, beams, columns, tie beam and foundation, which is able to withstand earthquake loads work plan and reinforcement to the structural elements of the building, in accordance with SNI 03-2847 -2002 and SNI 1726-2002. Structure which will be planned is an office building located in the region of tree floors 6 Padang earthquake. By using ETABS versi9 applications obtained in the amount of forces that occur. Of these forces gained size 30cm x 40cm beam with a 4 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press on the pedestal and 3 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press in the field. Size 40cm x 40cm column with 12 diameter 16mm principal reinforcement. Size 30cm x 40cm tie beam with 4 diameter 16mm tensile reinforcement, 2 diameter 16mm rebar press on the pedestal and 3 diameter 16mm tensile reinforcement, 2 diameter 16mm reinforcement press on the field. The foundation used piles with a 2 diameter 40cm depth of 15m. The foundation used are piles with a 2 pole diameter 40cm with a depth of 15
