TRADITIONAL BUILDING CONSTRUCTION MODEL DEVELOPMENT AS GUIDANCE FOR DESIGN A LIVING HOUSE ETHNIC-BASED IN NORTH SUMATRA

North Sumatra is located in Indonesia's West side was an area which had a rich of ethnic diversity. The problem that often arises is, a). Fading knowledge of the values embodied in traditional buildings this time, b). Many buildings that used local level ethnic elements, but feared designed and made without raw guidance, c). There’s many houses founded which still retain the cultural values with the ethnically specific reason, but feared the construction would be more wild and unfocused. From the problems that arised researchers conducted research with the aim of identifying the ethnic cultural values that exist in Mandailing and Malays ethnics. Results of research is: 1). Religious system manifested in the selection of elements of location, orientation, ornamentation, construction systems, and a sketch of the spatial arrangement, 2). Kinship system was realized on the elements of the configuration space, the amount of spaces fit the needed of residents and community life, as well as the completeness home; customs hall, granary, and a yard wide, 3). Philosophy of life manifested in the form of the element and the completeness of the space where all the activities of ethnic unity in the community, both individually and socially, 4). Leadership systems form the ornamentation patterns found on buildings, such as the form of the pole, the ornaments on the roof of the porch-railing, and the size of a large house viewed vertically or horizontally, the number of steps and the pole, the pole location or position and 5). Social system formed in the selection of roofing, decorative use or ornamentation, and composition of space in traditional home. Further research will be carried out mapping the concept of traditional buildings in North Sumatra.