| 摘要 |
PROBLEM TO BE SOLVED: To increase face plate strength (initial rigidity and maximum bearing strength) without applying any hardly realizable means such as increase of screw pitch density, a screw shank diameter, or a screw head part diameter in a connection device between a double-layer face plate and a frame material. SOLUTION: In this connection method between the double-layer face plate for building and the frame material, a part of a softer layer (soft layer 7) of the double-layer face plate constructed of two or more kinds of layers having different hardness is removed for exposing a harder layer (hard layer 8) for driving and connecting a connection material (a drill screw 6 in the figure) such as a drill screw or a nail to a frame material 5 and the like, and while the harder layer (hard layer 8) is exposed, the drill screw 9 is driven to be fastened from the partially removed part 10. COPYRIGHT: (C)2004,JPO
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