Structural analysis of traditional Batak Karo house against earthquake

The Karo traditional house studied was gerga sepulu dua jabu in Lingga village. The structure is modelled into frames and 3D models. Structural irregularity will be analyzed and spectral response analysis were carried out with SAP 2000. Earthquake resistance is determined based on period, base shear force, friction between rock with piles, story drift and appearance analysis. Horizontally the Batak Karo traditional house is regular but vertically has an irregularity that is mass irregularity, vertical geometry, discontinuity in the direction of holding horizontal force. From the SAP 2000 analysis, a period of 0.107993 seconds was obtained, a basic shear of 94.884 kN, a friction force between the rock with piles a 94.884 kN, story drift of 8.068 mm. Column axial force 152,755 kN, beam bending moment 16,372 kNm and beam shear force 47,982 kN. The upper limit of the period is 0.4676 seconds, dynamic shear force of 80.561 kN, rock friction with 368.55 kN, and 37 mm deviation. Column compressive force 1864.01 kN, beam bending moment 36,277 kNm, and beam shear force 380,725 kN. Based on that, it can be concluded that the Karo traditional house is safe from earthquakes.