| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain receiving pan holding device capable of definitely preventing a downward slope to the front side of the drain pan or a tilt of a horizontal edge portion in right-to-left direction caused by an impact force to a driven corner drain in a state of temporary fixing to a concrete form. SOLUTION: To a bottom surface of a horizontal edge portion 3a, the bottom end comes into contact with a concrete form 7B facing below the horizontal edge portion 3a, a drain pan holding device 16 equipped with a length-adjustable support member 17 holding the horizontal edge portion 3a to the predetermined position is arranged.
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