| 摘要 |
A construction method for pipes between floors, and an assembly to prevent falling of fire resistant substances are disclosed. The construction method for pipes between floors comprises processes of installing a pipe inside an interfloor through sleeve having a protrusion on inner circumferential surface; having a first ring shape cut-off plate fallen from the upper part of the pipe between the pipe and the through sleeve and placed on the protrusion; having a second cut-off plate fallen from the upper part of the pipe between the pipe and the through sleeve and mounted on the first ring shape cut-off plate; and filling fire-resistant substances in a space between the pipe and the through sleeve. The construction method for pipes between floors according to the present invention is provided to easily construct a cut-off plate at a construction site, wherein the cut-off plate seals a space between a vertical pipe and a through sleeve to prevent falling of fire-resistant substances regardless of eccentricity of the vertical pipe which is uneven according to site conditions. |
