| 摘要 |
PROBLEM TO BE SOLVED: To build a waterproof structure which can exert the characteristics of a hard building of a PC board and a soft expansion joint. SOLUTION: In a waterproof repair method for a roof floor of a building of PC board construction, side surfaces of the PC boards are made to abut on one another; a groove-shaped joint is constituted in an upper part of an abutment part; a joint bottom is filled with mortar; an inner surface in the range of a prescribed distance from the upper edge of the joint and top surfaces of the PC boards in the range of a prescribed distance from the upper edge are scraped; a metal sheet holder is bonded to a scraped part on the top surface of the PC board; the metal sheet holder and the top surface of the PC board are filled with a sheet of modified asphalt; and repair is performed by filling an upper part of the joint with a filler. COPYRIGHT: (C)2004,JPO
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