Firestop

Abstract: A fire safety device for closing through-holes in floors and walls and for thus stopping the potential spread of fire and smoke in case of the occurrence of a fire, includes a section of pipe having a weakened wall, a cup-shaped retainer spaced from the outside surface of the pipe section so as to define an annular space therebetween, the annular space in turn being provided with a suitable and pre-measured quantity of intumescent material. The device is pre-fabricated and thus avoids the problems inherent in attempting to manually provide the intumescent material in a collar during construction.

Abstract: The invention relates to a firestop assembly (100, 200, 300, 400) for a pipe, comprising first (102, 202, 302, 402) and second (110, 210, 310, 410) intumescent firestop rings. The first intumescent firestop ring overlies the pipe, and extends along the pipe for a first distance, and the second intumescent firestop ring overlies the first intumescent firestop ring and extends along the pipe for a second distance. The first distance is not equal to the second distance, and the firestop assembly so provided is particularly adapted for firestopping a plastic pipe.

Abstract: A cast-in-place pass through firestop device (2) for providing a passage in a partition through which wires, cables, pipes, and the like (16) are includes a housing having a riser portion with frangible connections that define removable bands that can be readily removed by a user to adjust the height of the device in accordance with the thickness of the partition into which the device is installed. The removable bands include pull tabs that provide gasping means to facilitate removal of the bands by a user along a frangible connection. The housing also includes a base portion including a recess with ribs for maintaining firestop material (26) in spaced relation from the base portion sidewall. A flame retardant char forming material (64), which works in combination with the firestop material to provide a fire, smoke, and water barrier, may also be provided adjacent the firestop material.

Abstract: A method and apparatus for creating firestopping barrier in a partition, such as a wall, floor, or ceiling, that is mounted adjacent the opening includes a housing containing a central opening. The cross-sectional area of the housing is greater than the cross-sectional area of the through-penetration opening, and the housing is arranged external to the through-penetration opening with at least a portion thereof extending along a surface of the partition thereby to allow the housing to be installed adjacent the through-penetration opening. Firestop material is arranged within the housing.