PURPOSE: To form a simple structure, which requires no complicate machining and does not depend upon carpenter work on a field.

CONSTITUTION: Structure, in which an angle rafter is received in hip roof structure, is formed. A pair of partition caps 22a, 22b formed by inclining end faces at approximately 45° so as to be mutually faced oppositely are placed on each of wall bodies 20a, 20b forming an outside angle section B, and a chessman- shaped piece material 23 is held between these partition caps. The piece material is put on the corner sections of the wall bodies shaping the outside angle section, and an angle rafter 11 is placed on the piece material. The angle rafter is bone and fixed by a bearing member 30 bearing the angle rafter and being abutted and fixed onto the internal surfaces or external surfaces of the wall bodies forming the outside angle section. The angle-rafter receiving structure is also applied to a section between main houses 45a, 45b built on struts 6.