FULL-SCALE TEST OF A WOODEN STRUCTURE WIT H AN OCTAGONAL SHAPE

Lateral and vertical loadings were conducted on a full-scale wooden st ructure with an octagonal shape. The strength of the structure and the effects of the bearing walls arranged 45 degrees to the lateral load were evaluated. The results are summarized as follows: (1) The roof of the structure with an octagonal shape could be considered as a diaphr agm. (2) The effects of the strength and the initial stiffness of the bearing walls arranged 45 degrees to the lateral load were different i n the bracing and sheathing arrangements. (3) Generally the strength o f structures, including the type without the bearing walls parallel to the lateral load, were about 10% under the strength calculated from t he Standard for Structural Calculation of Timber Structures. (4) In th e stage of bracing only, the strength and the initial stiffness were t he almost same as the structure with a rectangular shape that had the same amount of bearing walls. (5) The structure had enough strength fo r a vertical load corresponding to about a 50 cm thick deep snowfall.