| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for easily renewing a fire-resistant pipe joint installed and fixed on a floor slab without chipping work of concrete. <P>SOLUTION: A downward portion from the intermediate portion of the fire-resistant pipe joint having pipe connection ports 5 and 6 at vertical ends and formed so as to become a funnel shape in such a manner that its diameter gradually decreases from the intermediate portion of the vertical ends to the downward pipe connection port, is disposed in a through hole 15 vertically penetrating the fire protection section of a building structure and the pipe joint is fixed in the through hole with mortar 16 filling a gap between the circumference surface of the pipe joint and the through hole. A cylindrical separation member 20 which joins inside the through hole and separated from the pipe joint is provided on the outer circumference surface of the pipe joint, a pipe connected to the pipe connection port is cut in renewal such as repair and replacement of the pipe joint, and the cylindrical separation member joined inside the through hole remains and the pipe joint is drawn. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
