| 摘要 |
PROBLEM TO BE SOLVED: To facilitate and secure fixing of a rafter to horizontal members and visually check the rafter fixing state from below, even after construction of roof boarding work or the like. SOLUTION: An indicator part 14 is provided on the lower part side of a second additionally-provided member with a first additionally-provided member 10a laid along the upper surface of the rafter 20 and a second additionally-provided member 10b laid along the side surfaces of the rafter. When the indicator part is positioned at the upstream side end or the downstream side end of the notch groove wall upper edge 33a of the rafter notch 33 on the horizontal member upper surface 31, an additionally-provided body 10 is provided, on the rafter, with a screwing display part 15 having a wood screw 40, which is vertically screwed relative to the rafter upper surface, screwing through the substantially center of the notch groove bottom surface of the rafter notch, into the horizontal member 30. The first additionally-provided member is laid along the upper surface of the rafter mounted on the rafter notch of the horizontal member and the second additionally-provided member is laid along the side surface of the rafter, and furthermore, the indicator part is positioned at the upstream side end of the notch groove wall upper edge or the horizontal member upper surface at the downstream side end, screwing the wood screw through the rafter into the horizontal member from the screwing display part to fix the rafter to the horizontal member together with the additionally-provided body. COPYRIGHT: (C)2011,JPO&INPIT
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