| 摘要 |
PURPOSE:To increase strength of a connection part and prevent water from intruding and staying at an additionally installed part. CONSTITUTION:An additional water-proof floor pan 2 is arranged at an end of a fundamental water-proof floor pan 1 formed into a specified standard dimension. A placing part 4 provided with a reinforcement 3 inside thereof is equipped on the underside of an end of the additional water-proof floor pan 2. On an upper part of a standing wall 5 stood from the periphery of the fundamental water-proof floor pan 1, a nearly horizontal placing step part 6 is provided. On the placing step part 6 positioned on an opposite end of the fundamental water-proof floor pan 1 opposing to the additional water-proof floor pan 2, the placing part 4 is placed. |
