Numerical Analysis of Bolon as Traditional Batak Toba House During An Earthquake: A Study in Village of Siallagan And Silalahi North Sumatera

There were many two-story building collapsed in The Province of Sumatera during an earthquake. One structure that did not collapse is the Traditional Batak House, which mostly made of wood. Traditional Batak House still stands strong until now eventhough it was built years before the presence of building code. The layout of the structure, the frame concept and also the earthquake force is calculated using Guideline SNI 7973:2013 for wood construction, and SNI 03-1726-2012 for earthquake structure resistant structure design. The research observed traditional Batak Toba house from two villages, the village of Siallagan and Silalahi which is neighboring village. The houses have different model of timber roof construction and also different height. The structure then analyses with the help of structure software application in seismic condition. One of the outcomes using software computation was natural frequency. The ω for both houses in Village of Siallagan and Silalahi are 12,697 rad/sec and 13,846 rad/sec. while the period of the structure are 0,494 second and 0,454 second. The maximum value of the dynamic response expressed in the shear force of the traditional house for both village is 28,87 kN. The maximum floor displacement for Village of Siallagan is 4.01 cm, and for the Village of Silalahi is 4.14 cm.