Abstract: A relatively inexpensive bushing easily installed extending through walls, particularly, gypsum board membrane walls for providing firestopping around a limited number of linear penetrating members such as cables or wires. This grommet construction includes first and second half sections for facilitating attachment around cables more easily. A split internal seal preferably of resilient foam material is positioned within a split mechanical shell which facilitates placing of the bushing around penetrating members prior to placement thereof through walls or after positioned thereof penetrating through a panel such as wallboard. A split mechanical shell with a two-piece foam insert retained within a bore extending therethrough can be formed as two separable half cylindrical shells. Barbs are included on the outer portion of the shell to facilitate mounting thereof. The foam firestopping seal portion can be intumescent.

Abstract: An example of a pre-assembled, moisture, water, and gas impermeable fire-barrier system for use in expansion-joint spaces includes a fire-barrier having a layer of outermost protective cloth layer overlain by an insulation blanket overlain by stainless steel foil, overlain by a second insulation blanket, overlain by a limited layer of intumescent material, overlain by impermeable silicon coated cloth to completely or partially surround all of the other layers of the barrier. If desired, a first attachment apparatus for attaching a first long edge of the fire-barrier to a building unit and a second attachment apparatus for attaching the opposing second long edge to an opposing spaced building unit may be fixedly attached to the barrier. The barrier system may be fitted with a drain aperture and a drainage hose emanating from the aperture, the hose protected from the heat of a fire.

Abstract: A metal casing strip for a fire collar to be arranged around a duct has a line of succesive tongues and cutouts in the longitudinal direction of the strip. The tongues and cutouts are arranged in the strip in an alternating fashion. The tongues are bendable out of the surface of the casing strip such that in use, when the casing strip is arranged around a pipe such that two end regions overlap, an outwardly bended tongue from the one end region is inserted in a cutout of the overlapping other end region and folded over the edge of the cutout to retain the casing strip in the closed collar shape.

Abstract: A blanket or curtain of flexible fire retardant material is collapsed and retained within a retaining housing construction positioned adjacent to a curtain wall assembly for firestop sealing thereover. The housing includes a safing angle member secured to the curtain wall assembly and a cover which releases responsive to sensing fire conditions to allow the firestopping blanket to deploy downwardly to extend between curtain wall framing members and be positioned extending across a curtain wall panel for fire protection thereover. Such curtain wall panels are commonly made of glass which tends to fracture during a hot fire. The cover will release the blanket responsive to controlled failure of fusible links which secure the cover to the safing angle member. After deployment the blanket will deflect fire and heat away from the curtain wall panel to prevent the spread of fire to adjacent floors.

Abstract: A thermally expandable fire-stop system for placement in a thermally stable conduit having an inner wall defining an inner space through which a single pipe, being a, relatively, thermally weakenable pipe having an outer wall, extends, or will extend, the system comprising at least a device which includes at least one component having a non-linear thermal expansion characteristic.

Abstract: A passive fire resistant system for filling a space or gap confined by construction elements, for resisting the spread of a nearby fire through the space or gap, wherein the system comprises: at least two first layers of a first, material which comprises a fire resistant elastomeric foam raving a closed cell structure; and at least one second layer of a second material sandwiched between two first layers, the second material comprising a polymer and each second layer having surfaces which, as an initial response to a rise in their temperature from room temperature, exhibit a transition into an adhesive, the first and second layers extending parallel to each other, the second material being stiffer than the first material.

Abstract: A sealing gasket for use attached to the topmost edge of gypsum board used as construction wallboard. The gasket includes a support leg section capable of being mounted in engagement with the uppermost edge of the gypsum board. The gasket includes a sealing leg extending outwardly from said leg section which includes an intumescent component to facilitate sealing between the edge of the gypsum board and the wall structure above. The sealing leg preferably includes an intumescent impregnated paper material covered with a structurally enhancing layer. An adhesive layer can be included to attach the gasket to the gypsum wallboard. The sealing leg is preferably planar and extends upwardly and inwardly over the upper edge of the gypsum board at an obtuse angle with respect to the support leg for sealing the head-of-wall area thereabove.

Abstract: Fire-rated wall construction components and wall systems for use in building construction. Embodiments can include tracks for holding studs which incorporate various geometries capable of receiving fire-retardant material, including but not limited to intumescent material. The fire-retardant material can be attached to the tracks such that the fire-retardant material expands and seals gaps and/or areas between the tracks and wall components such as ceilings, floors, and drywall. Various assemblies and methods can be used to cover the deflection gap.

Abstract: Fire block devices for application to a wall component. The fire block device can be a strip that includes a fire-resistant material strip comprised of a material that expands in response to sufficient heat to create a fire-resistant barrier. An optional foam strip comprised of a foam material can be placed side-by-side with the fire-resistant material strip. A cover layer covers the fire-resistant material strip and the optional foam strip, if present. The cover layer includes opposing side portions positioned on opposing sides of the fire-resistant material strip and foam strip, if present. The cover layer is comprised of a tape having an adhesive on an underneath surface thereof such that adhesive on the side portions are capable of securing the fire block strip to a wall component. The fire block strip can be applied to a header track, footer track or wall stud, among other possible components.

Abstract: A metal casing strip for a fire collar to be arranged around a duct has a line of successive tongues and cutouts in the longitudinal direction of the strip. The tongues and cutouts are arranged in the strip in an alternating fashion. The tongues are bendable out of the surface of the casing strip such that in use, when the casing strip is arranged around a pipe such that two end regions overlap, an outwardly bended tongue from the one end region is inserted in a cutout of the overlapping other end region and folded over the edge of the cutout to retain the casing strip in the closed collar shape.

Abstract: The present application is directed toward fire-rated wall construction components and wall systems for use in building construction. Embodiments can include tracks for holding studs which incorporate various geometries capable of receiving fire-retardant material, flat straps for use between tracks and fluted wall components, fire sponges for use in fluted wall components, and tracks with protruding grooves or other structures which prevent unwanted air movement between a wallboard component and the track.

Abstract: The present invention is directed to a profile used to support fire retardant and or wall sheathing behind opposing wall sheathing edges, horizontally at head of walls, and behind control/reveal joint profiles. The profiles are shaped to support wall sheathing, intumescent stopping, and fire rated “rips” of wall sheathing and work in a manner that allows protection or support of intersecting opposing drywall edges.

Abstract: A joint cover system is operable to span a gap between two building members, wherein each building member including a first side surface and an end surface. The joint cover system comprises a first base member, a second base member, an intumescent sheet, a first fastener, and a second fastener. The first base member may be positioned on the first side surface of the first building member, and the second base member may be positioned on the first side surface of the second building member. The intumescent sheet may include a first edge positioned between the first base member and the first side surface of the first building member and a second edge positioned between the second base member and the first side surface of the second building member. The first fastener may penetrate the first base member and the first edge of the intumescent sheet. The second fastener may penetrate the second base member and the second edge of the intumescent sheet.

Abstract: The invention relates to a fireproofing element comprising a fireproof glazed element (1) which forms a window or door leaf (8). A bulkhead frame (3) is arranged around the door leaf (8), inserted in the building (2). A deformable component (28) is built in between the bulkhead frame (3) and the building (2). At least one telescopic element (15) is arranged between a lateral edge (10) of the door leaf (8) and the bulkhead frame (3). Said telescopic element (15) is displaceable relative to the bulkhead frame (3) in the direction of the arrows (20). The telescopic element (15) can compensate for changes in the joint (50) between the door leaf (8) and the bulkhead frame (3) and/or also seal said joint (50). Changes in length as a result of heating of the components during a fire can thus be accommodated and the door leaf (8) and fireproofing glazed element (1) hence not destroyed.

Abstract: The present disclosure, in one embodiment, relates to a fire retardant biolaminate composite assembly. The assembly includes a biolaminate layer. The biolaminate layer includes a PLA sub-layer, wherein the biolaminate layer includes a fire retardant. The assembly also includes and an intumescent layer comprising an intumescent material that swells as a result of heat exposure, wherein the biolaminate has good char and low flame spread with minimal smoke generation.

Abstract: The present invention relates to both a proceeding and means for, in connection with hole making in a wall (1), for the mounting of items on the moisture-proof walls (1) of a wet area by means of an expandable mounting element (2), providing sealing of the hole. According to the invention, in addition to an expansion (I) of the mounting element (2) behind said wall (1), there is also provided an internal expansion (II) of the mounting element (2) in the receiving hole (3) of the mounting element (2) in question in the wall (1). There is furthermore provided a liquid-proof cover (III) around the entire mounting element (2) in question introduced and expanding in said receiving hole (3).

Abstract: A fire resistive joint cover system operable to span a gap between two surfaces. The system generally may include first and second base members, a covering member, and an intumescent sheet. Each base member is operable to couple with one of the surfaces and the covering member is operable to couple with the base members to at least partially span the gap. In some embodiments, the covering member may be configured as a floating covering member and/or as a flexible elastomer seal.

Abstract: A fireproof resin sash that is usable in fire zones or the like is provided, regarding which fireproof performance is easily imparted to a general non-fireproof resin sash without modification of the structure thereof. In a fireproof resin sash 1, vertical frame members 11 and 12 and lateral frame members 13 and 14 that are synthetic resin members having a plurality of hollows along the longitudinal directions thereof are combined with each other to constitute an opening body 10, and vertical rail members 21 and 22 and lateral rail members 23 and 24 are combined with each other to constitute screens 20 that support windowpanes 25. Fireproof sheets 15 and 15A made up of thermally expandable fireproof material are inserted into hollows selected from the hollows of the members so that fireproof surfaces can be formed in the direction along the glass surfaces.

Abstract: A roof product has a thermal heat storage layer, a vent layer with channels for transferring excess heat through a length of the roof product, and a flame retardant to suppress fire through the vent layer. These three materials form a unitary structure. The roof product may have a radiant layer, the thermal heat storage layer and the vent layer to form the unitary structure. The roof products are assembled in an abutting configuration on the roof of a building. The vent layer vents excess heat from an eave of the roof up to a ridge of the roof and out to atmosphere. The roof products manage thermal energy in the roof by storing thermal heat with the unitary roof product during a heating cycle; venting excess heat through the unitary product; and releasing the stored thermal heat from the unitary product into or out of the building during a cooling cycle.

Abstract: Multi-layered, fire-barriers each sized and shaped for installation into accepting intersection-spaces formed by the spaced-intersection of at least two expansion-joint spaces that occur between two adjacent spaced structural building units, each of said expansion-joint spaces defined by a plane, said plane defined by a set of three non-colinear points with each point defined by a set of x, y, z coordinates from the same coordinate system with no two of said coordinate sets being identical. The fire-barriers are shaped for use in 2-way planar, L-shaped expansion-joint spaces, T-shaped, cross-shaped, V-shaped, and vertical/horizontal L-shaped corner expansion-joint spaces, for example, and may comprise at least one layer of: protective cloth, insulating blanket, intumescent material, and mechanically supporting layer.

Abstract: A fire protection module is provided for wall and ceiling openings. The fire protection module includes a sheath for insertion into the wall or ceiling opening and a flange to be placed at the wall or ceiling. The assembly of the fire protection module may be performed with few steps. For example, the sheath and the flange are embodied in one piece.

Abstract: A fire resistive joint cover system operable to span a gap between two surfaces. The system generally may include first and second base members, a covering member, and an intumescent sheet. Each base member is operable to couple with one of the surfaces and the covering member is operable to couple with the base members to at least partially span the gap. In some embodiments, the covering member may be configured as a floating covering member and/or as a flexible elastomer seal.

Abstract: A fire-resistant glass block including a thermal break and methods for making same. Embodiments of the glass block assembly include at least two portions filled with fire-resistant gel, wherein the at least two portions are connected using a thermal break channel. The thermal break channel improves the thermal conductions characteristics of the assembly and mitigates the potential for breakage in either glass block half unit through direct heat transfer. The glass block assembly can be made by connecting two or more glass portions using a thermal break channel and filling the connected glass block portions with fire-resistant gel.

Abstract: An intumescent strip includes a first material layer and an opposing second material layer. A third material layer, formed from an intumescent material, is positioned between the first and second layers. The intumescent material includes a combination of intumescent particles suspended within a thermoplastic material. The intumescent particles have an activation temperature and are expandable when exposed to temperatures above the activation temperature. The thermoplastic material has a melting temperature that is lower than the activation temperature.

Abstract: A refractory includes a cement, a binder and a matrix. The matrix comprises both stainless steel fibers and organic fibers. The refractory can be easily cast, without additional steel reinforcement, into large fire wall 16 panels 10 capable of meeting the requirements of testing conducted in accordance with ASTM E-119, Standard Test Methods for Fire Tests of Building Construction and Materials in support of IEEE Std. 979-1994, Guide for Substation Fire Protection. The fire wall 16 assembly withstood the fire endurance test without passage of flame and gases hot enough to ignite cotton waste during a four-hour fire exposure. The assembly also withstood a 45 psi water stream for five minutes immediately following the four-hour fire exposure period. This is a stringent mechanical requirement, as all fire walls 16 must maintain their integrity before, during and after a fire, per the Universal Building Code's definition of a true fire wall 16.

Abstract: An intumescent composition which comprises a polymer selected from a silane-terminated polyurethane or a silane-terminated polyether, a plasticizer that is compatible with the polymer and an intumescent ingredient. Processes of forming a cured intumescent substance, and methods of fire protecting a building are also provided.

Abstract: The present invention provides a system, method and apparatus for producing fire rated doors having added strength, better finishing and low cost manufacturing flexibility. The fire rated doors are made from two panels “sandwiched” together. An optional interior layer (e.g., fire resistant material, lead sheeting, steel or Kevlar) can be added between the door panels for various purposes. Splines, stiles or sticks are inserted in longitudinal channels in the door panels to provide assistance in aligning the door panels and greater hardware holding strength. An intumescent banding material concealed by a banding material around the perimeter of the door seals the door within its frame during a fire. The door design and the automated manufacturing process provide greater design choice, reduced cost and faster fabrication.

Abstract: A firestop drain assembly for mounting in a partition to prevent fire on one side of the partition from moving through the firestop drain assembly to the other side of the partition. The firestop drain assembly can achieve an F-rating and a T-rating of at least one (1) hour.

Abstract: Movable partition systems comprise a movable partition. A track may be configured to engage with the movable partition such that the movable partition is extendable along the track. A first mass of intumescent material may be positioned adjacent the track on a first side of a gap defined by the track. A second mass of intumescent material may be positioned adjacent the track on a second, opposing side of the gap defined by the track. At least one shroud may at least partially surround the track and may be configured to confine expansion of the first and second masses of intumescent material toward one another across the gap. An intumescent material may be sandwiched in a gap between a leading end of a lead post at a distal end of the movable partition and a cap at least partially surrounding the leading end to define the gap.

Abstract: Fireblock devices, wall assemblies and related methods useful for retarding the spread of smoke and fire through dynamic head-of-wall construction joints and gaps are disclosed herein. In one embodiment, the fireblock device is characterized by an elongated angled channel member having an elongated intumescent material strip, wherein the angled channel member is defined by an elongated top flange member connected to an elongated side flange member along a lengthwise edge, and wherein the top and side flange members define a right angle and a lengthwise interior corner region, and wherein the top and side flange members each have inner flange member surfaces that face inwardly with respect to the interior corner region, and outer flange member surfaces that face outwardly with respect to the interior corner region, and wherein the intumescent material strip is affixed on the outer flange member surface of the side flange member.

Abstract: Fire-barriers systems, including pre-assembled intersecting and straight-line fire-barriers having either all male-, all female-, or both types of coupling ends eliminate on-site cutting and construction of barriers required for intersection-spaces and provide easy, rapid, and safe one-step, drop-in installation and coupling. All male/female ended fire-barriers are constructed as single-piece units. All adjacent laid-flat layers are continuously connected having no gaps or folds. Straight-line and L-shaped barriers are certified according to the criteria mandated by both the ASTM E 1399-97 (Reapproved 2005), Standard Test Method for Cyclic Movement and Measuring the Minimum and Maximum Joint Widths of Architectural Joint Systems and the UL 2079 Fire Resistance of Building Joint Systems Test for air leakage (Revised and relocated as 1.14 Mar. 10, 2006).

Abstract: A composite profile for a window, door or façade element includes first and second outer profile parts and at least one insulating strip connecting the first and second outer profile parts with an intermediate space defined between them for thermal separation. At least one outer profile part connecting element is disposed in the intermediate space so that it is normally not in contact with the first and second outer profile parts. An actuating element is disposed so that, upon being activated by heat, it moves the outer profile part connecting element into engagement with the first and second outer profile parts, so that the outer profile part connecting element connects the first and second outer profile parts.

Abstract: A backer rod adapted for forming a fire-resistant seal within a construction joint. The backer rod may include an elongated tube defining a total assembly volume and a hollow interior, and a core disposed within the hollow interior. The tube is formed of a combustible foam plastic which disintegrates when exposed to fire. The core material is expandable when exposed to fire, such that the core has an intumescent expansion factor sufficient to expand to a volume beyond the total assembly volume. The backer rod may be press fit into a void between two surfaces to a depth. A sealant layer may be formed within the void. When exposed to fire on a side opposite the sealant layer, the external shell disintegrates, the core expands within the void in a direction away from the sealant layer, and a fire-resistant barrier is formed within the void between the surfaces.

Abstract: A structural mounting insert for sealing between and/or adhering to surfaces of members is described. The insert includes a base member and activatable material about the base material.

Abstract: A fire retardant head-of-wall assembly configured to seal a linear head-of-wall construction joint or gap when exposed to a heat source such as a building fire is disclosed. The inventive fire retardant head-of-wall assembly comprises a header track having an elongated intumescent strip affixed lengthwise on at least one of the outer sidewall surfaces of the header track. The intumescent strip comprises expandable graphite and a fire retardant (C2-C8 alkyl diamine phosphate). When exposed to a heat source such as a building fire, the intumescent strip expands so to fill the head-of-wall construction joint or gap, thereby retarding or preventing the spread of smoke and fire. The inventive fire retardant head-of-wall assembly has been certified as complaint with respect to Underwriters Laboratories, Inc.'s standards set forth in its Tests for Fire Resistance of Building Joint Systems—UL 2079.

Abstract: A method suitable for anchoring an anchoring element in an object, which anchoring element is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral anchoring element surface and the compression axis. The anchoring element has a coupling-in face which serves for coupling the mechanical vibrations into the anchoring element, which coupling-in face is not parallel to the compression axis. The anchoring element further includes a thermoplastic material which in areas of the peripheral surface enlargement forms at least a part of the surface of the anchoring element, the method includes the steps of: providing a bore in the object; positioning the anchoring element in the bore; and coupling the compressing force and the mechanical vibrations through the coupling-in face into the positioned anchoring element.

Abstract: Herein are disclosed are apparatus and methods for forming firestopped through-penetrations in poured concrete partitions. The apparatus and methods use an intumescent firestop ring that can be used in combination with a removable sleeve. The firestop ring is detachably mounted on the outer surface of the sleeve form, near one end of the sleeve. The sleeve is positioned and concrete poured around it. After solidification of the concrete the sleeve can be removed to provide a through-penetration containing the firestop ring, secured to the solidified concrete. The firestop ring may optionally comprise one or more retainers and/or one or more insulating spacers.

Abstract: A fire-rated receiver channel includes at least one intumescent or other fire-resistant material strip. The receiver channel can nest with a framing member, such as metal tracks, headers, header tracks, sill plates, bottom tracks, metal studs, wood studs or wall partitions, and placed at a perimeter of a wall assembly to create a fire block arrangement. In other arrangements, a track assembly includes two nested tracks, an inner track and outer track. The assembly is designed so that the outside width of the outer track is equal to or less than the outside width of the inner track to present a substantially flush external surface for attachment of exterior sheathing elements when the assembly is used in an external wall.

Abstract: A fire resistant steel structure (10) comprises a steel beam (14) for receiving a vertical load and a support structure for supporting the horizontal beam (14) at two horizontally spaced locations. At least one fire-resistant tension member (30) has its ends (32, 32?) anchored outside the steel beam (14) in the support structure. It is arranged relative to the steel beam (14) in such a way that when the steel beam (14) is overheated and yields under the vertical load in case of severe fire conditions, it rests on the at least one fire-resistant tension member (30) and is vertically supported by the latter.

Abstract: The invention disclosed herein is directed to a fire retardant head-of-wall assembly configured to seal a linear head-of-wall construction joint or gap when exposed to a heat source such as a building fire. The inventive fire retardant head-of-wall assembly comprises a header track having an elongated intumescent strip affixed lengthwise on at least one of the outer sidewall surfaces of the header track. When exposed to a heat source such as a building fire, the intumescent strip is able to expand so as to at least partially fill the head-of-wall construction joint or gap; and in so doing, retard or prevent the spread of smoke and fire. The inventive fire retardant head-of-wall assembly has been certified as complaint with respect to Underwriters Laboratories, Inc.'s standards set forth in its Tests for Fire Resistance of Building Joint Systems—UL 2079.

Abstract: The present invention is directed toward a track assembly comprising two nested tracks, an inner track and outer track. The assembly is designed so that the outside width of the outer track is equal to or less than the outside width of the inner track to present a substantially flush external surface for attachment of exterior sheathing elements when the assembly is used in an external wall. The system may further comprise a strap or series of engaging surfaces on the inner and outer tracks that generally restrain the inner track relative to the outer track.

Abstract: The present invention is predicated upon the provision of systems and methods for reinforcement of a structural member. More particularly, the present invention is predicated upon unique carrier configurations and application of reinforcing material thereto. In one configuration, the application of reinforcing material is achieved without the use of fasteners, adhesives, or both, for placement, locating and restrictive movement of the reinforcing material onto the carrier.

Abstract: A fire suppression surface system comprises a flat sheet and a plurality of support members. The sheet has fluid channels therethrough. The support members lie on a support surface in a spaced-apart arrangement, and the sheet rests on the support members substantially parallel to and offset vertically above the support surface and defines with the support surface a containment space for receiving fluid spilled on the upper surface of the sheet that flows through the fluid channels. Area of channel upper openings is larger than about twice area of lower openings so as to restrict flow of air into or restrict escape of combustion products from the containment space, thereby suppressing combustion of a flammable fluid spilled on the sheet. A method for suppressing combustion of flammable fluid spilled on the support surface comprises covering the support surface with the sheet supported by the support members.

Abstract: A refractory includes a cement, a binder and a matrix. The matrix comprises both stainless steel fibers and organic fibers. The refractory can be easily cast, without additional steel reinforcement, into large fire wall 16 panels 10 capable of meeting the requirements of testing conducted in accordance with ASTM E-119, Standard Test Methods for Fire Tests of Building Construction and Materials in support of IEEE Std. 979-1994, Guide for Substation Fire Protection. The fire wall 16 assembly withstood the fire endurance test without passage of flame and gases hot enough to ignite cotton waste during a four-hour fire exposure. The assembly also withstood a 45? water stream for five minutes immediately following the four-hour fire exposure period. This is a stringent mechanical requirement, as all fire walls 16 must maintain their integrity before, during and after a fire, per the Universal Building Code=s definition of a true fire wall 16.

Abstract: A backer rod adapted for forming a fire-resistant seal within a construction joint. The backer rod may include an elongated tube defining a total assembly volume and a hollow interior, and a core disposed within the hollow interior. The tube is formed of a combustible foam plastic which disintegrates when exposed to fire. The core material is expandable when exposed to fire, such that the core has an intumescent expansion factor sufficient to expand to a volume beyond the total assembly volume. The backer rod may be press fit into a void between two surfaces to a depth. A sealant layer may be formed within the void. When exposed to fire on a side opposite the sealant layer, the external shell disintegrates, the core expands within the void in a direction away from the sealant layer, and a fire-resistant barrier is formed within the void between the surfaces.

Abstract: The present application is directed toward fire-rated wall construction components and wall systems for use in building construction. Embodiments can include tracks for holding studs which incorporate various geometries capable of receiving fire-retardant material, flat straps for use between tracks and fluted wall components, fire sponges for use in fluted wall components, and tracks with protruding grooves or other structures which prevent unwanted air movement between a wallboard component and the track.

Abstract: A firewall sealing assembly is provided for use between a firewall and a penetrating member. The assembly comprises a primary seal, a secondary seal, and a plurality of retaining rings. The primary seal is configured to provide a primary seal between the firewall and the penetrating member. The secondary seal is configured to provide a secondary seal between the firewall and the penetrating member. The secondary seal is positioned spaced apart from the primary seal to define a seal cavity there between.

Abstract: The present application is directed toward fire-rated wall construction components and wall systems for use in building construction. Embodiments can include tracks for holding studs which incorporate various geometries capable of receiving fire-retardant material, flat straps for use between tracks and fluted wall components, fire sponges for use in fluted wall components, and tracks with protruding grooves or other structures which prevent unwanted air movement between a wallboard component and the track.

Abstract: An intumescent firestopping apparatus used in poke-through applications for selectively sealing an opening through a construction barrier such as a wall, floor or ceiling having cables or other penetrating members extending therethrough. The apparatus effectively seals this barrier responsive to a fire to prevent unwanted transmission of fire through conventional construction barrier areas. The apparatus includes a sleeve with two intumescent pads positioned therein. At least one of the pads has an arcuate curved central section to be biased against the other intumescent pad to define therebetween a confinement area for holding of cables centrally located therein in a dynamically adjustable sealing throat defined therebetween. These pads can be variously mounted with respect to the adjacent wall structures and one or both of the pads can be arched toward the other pad to facilitate defining of the dynamic throat for receiving cables extending therethrough.

Abstract: An intumescent firestopping apparatus used in poke-through applications for selectively sealing an opening through a construction barrier such as a wall, floor or ceiling having cables or other penetrating members extending therethrough. The apparatus effectively seals this barrier responsive to a fire to prevent unwanted transmission of fire through conventional construction barrier areas. The apparatus includes a sleeve with two intumescent pads positioned therein. At least one of the pads has an arcuate curved central section to be biased against the other intumescent pad to define therebetween a confinement area for holding of cables centrally located therein in a dynamically adjustable scaling throat defined therebetween. These pads can be variously mounted with respect to the adjacent wall structures and one or both of the pads can be arched toward the other pad to facilitate defining of the dynamic throat for receiving cables extending therethrough.