TW201400675A - Conventional fire-rated one-sided construction - Google Patents

Abstract

A fire resistant membrane comprising a plurality of regularly spaced elongated parallel sheet metal framing elements, a first layer of fire rated wallboard attached directly to the framing elements with screws, a side of the framing elements opposite a side bearing the first wallboard layer being substantially free of any directly attached covering layer, a grid of elongated parallel sheet metal shafts overlying the first wallboard and secured to the studs with screws extending through the first wallboard layer, the shafts being oriented at right angles to the studs, and a second layer of fire rated wallboard overlying the shafts and being spaced from the first layer by the shafts, the second layer of wallboard being attached to the shafts with screws having a length insufficient to fully penetrate the first wallboard layer.

Description

Traditional single-sided fireproof construction

This invention relates to building construction and, in particular, to refractory membranes.

Mechanical shafts, troughs, and stairwells are examples of interior construction areas that require a firewall or fireproof ceiling membrane. Typically, such areas have accessible openings on only one side of the wall or membrane in terms of their construction. Known methods and materials for constructing these restricted inlet membranes may be limited by their effectiveness in achieving satisfactory flame retardancy.

Summary of invention

The present invention provides an effective fireproof membrane construction that can be assembled from one side of a membrane for use in walls, ceilings, mechanical shafts, grooves, and the like. The structure Traditional metal sheet frame components, firewall panels or plasterboard, and assembly techniques are used. The fireproof plasterboard layer is attached to a lightweight steel "C" keel or similar frame element. The second fireproof gypsum board layer, and optionally the continuous layer, is separated from the previous layer by a resilient channel clip or similar component. The right corner of the slot clamp is oriented with the keel. The trough clamp allows a continuous gypsum board to be secured by screws that do not penetrate the assembly, thereby not directly transferring heat from one side of the membrane to the other. The gap between the layers is thereby advantageously prevented from transferring heat from one layer to the other by the addition of a film of fire resistant capability. In addition, when the trough clamps experience thermal expansion and their ends are defined, the trough clamps play an important role by stabilizing the keels on the sides against continuous warping. This stabilizing function avoids the early practice of spacing the ends of the keels from each other or spacing the ends of the keels to reach the line to accommodate thermal expansion and thereby avoid warpage, but unfortunately limits the height of the film.

The construction of the present invention is scalable in a sense, that is, Additional protection is achieved by adding a firewall board layer (inserted or not inserted into the slot clamp).

The terms wallboard and gypsum board are used interchangeably in this disclosure.

10‧‧‧ film or wall

11‧‧‧ keel

12‧‧‧Fireproof gypsum board

24 ‧ ‧ layer

26‧‧‧ slot clamp

34‧‧‧ layer

22‧‧‧ flat steel

33‧‧‧Gypsum board screws

27‧‧‧Connecting board

28‧‧‧ side

29‧‧‧ side

31‧‧‧Oval hole

32‧‧‧Flange

16‧‧‧ slot clamp

17‧‧‧ screws

18‧‧‧Small joint angle

19‧‧‧ hole

23‧‧‧ Short component rails

1 is a cut-away perspective view of a single-sided firewall film constructed in accordance with the present invention; FIG. 2 is a cross-sectional plan view of the wall of FIG. 1; FIG. 3 is a front side elevational view of the wall of FIG. 1; Intercepting the elastic groove clamp used in the wall construction of Figure 1. The body map; and 5A, 5B, and 5C illustrate an optional alternative fastening arrangement for embodying the wall of the present invention.

Description of the reference embodiment

For example, a film or wall as shown at 10 in the drawings is a "single-sided construction" which refers to the assembly of one or more persons standing on or on only one side of the film. Such single sided construction is necessary to limit access to certain architectural areas and/or conditions on one side of the membrane. Examples of these situations are high-rise elevator shafts, multi-purpose shafts, troughs, and reconstructions in which the existing strong fire conditions are unknown. The membrane or wall 10 comprises a steel plate "C" keel, which is typically comprised of a lightweight stock and fire resistant gypsum wallboard 12. The keel 11 is a material item that is generally commercially available, like a fireproof gypsum board 12. Typically, the gypsum board has a thickness of 5/8 inches and is 4 feet wide and 8, 9, 10, 12, 14 and 16 feet long. The keel 11 can be any commercially available unit, typically: 1-5/8 feet to 6 inches wide and as long as, for example, 8 feet to 16 feet. The dimensions used herein can be replaced by the equivalents of industrial metrics. As used herein, the term film is understood to mean a wall, ceiling or other similar structure. The keel 11 can function as a joist in the case where the membrane functions as a ceiling in, for example, a hallway or a stairwell. The keel 11 can be used in a vertical and horizontal orientation to frame a refractory tank or other structure.

For example, if the membrane 10 is a wall that is centered at 2 feet in a parallel relationship, the keel 11 can generally be assembled in a U-shaped rail (not shown) that is conventionally above and below. Figures 5A, 5B, and 5C illustrate An alternative conventional way of using the bridging members to support the keel 11 between adjacent keels 11 is. 5A and 5B illustrate a slot clamp 16 secured to the continuous keel using screws 17.

The structure of Fig. 5A is used in the connecting plate of the keel 11 A small attachment angle 18 is attached to the aligned aperture 19. In Fig. 5B, the channel clip 16 is screwed to the flange of each keel 11. In Figure 5C, the flat steel 22 is screwed to the flange of each keel. As shown in Figures 5B and 5C, short track rails 23 known in the industry are enclosed and screwed onto a pair of adjacent keels 11. A similar rail member 23 can be used at the end of the wall and at a center such as 8 feet. It can be understood that the slot clamp 16 or the flat steel 22, and the screw fastener 17 used for the rail 23 can be driven by a person on one side of the keel 11 away from the slot clamp or the flat steel.

Any support 16 or 22, and 23 to be used are installed Thereafter, the keel 11 is covered with a first layer of fireproof gypsum board. The layer 24 is attached to the keel 11 using a conventional rotation gypsum board screw that is driven through the wall panel into one side of the keel or into the flange. Thereafter, an elongated sheet metal slot clamp 26 (preferably of the type known as an elastic channel clamp, as shown in Fig. 4) is mounted on the first layer 24. The channel clips 26 are oriented at a level such that they are perpendicular or intersecting the keel 11. The channel clamp 26 is typically mounted on the center of 2 feet. As shown in Fig. 4, the channel clamp 26 has a web 27 and opposite sides one side 28, 29. One of the sides 28 is relatively wide and preferably has an oblong hole 31 spaced along its entire length. The longitudinal edges of the apertured side 28 remote from the web 27 have associated flanges 32 oriented in a plane parallel to the web 27. In the free state of the elastic groove clamp 26, one of the slot clamps is shorter Side 29 is spaced from the plane of the flange. The trough clamp 26 is fastened to the keel 11 by the gypsum board screw 33, wherein the screw is driven into the side of one side of the keel by the flange 32 and the wall panel 11.

The second layer 34 of the wall panel 12 is mounted on a resilient channel clamp. The gypsum board screw 36 that secures the wall panel 12 to the channel clip 26 is preferably driven into the web 27 of the trough clamp at a location remote from the keel 11. The screw 3 is long enough to penetrate and remain on the channel clamp web 27, but not so long as to penetrate the first wall panel layer 24 completely.

For high fire resistance and more applications, the membrane construction 10 Many advantages over prior art arrangements are provided. Since the screws holding the layers 24 and 34 do not penetrate the entire thickness of the film 10, there is no direct heat transfer path from one side of the film to the other side and creating a hot spot for ignition in the combustible material. The grooved clip 26 fixed in a cross relationship with the keel 11 serves to support the keel against the warping force. This feature allows the ends of the keels to fit tightly against the ends of other keels or to fit tightly in the runner track (top and bottom) without creating gaps and thus increasing the height limit during thermal expansion. The ends of the keels that are tightly secured in the running track can be screwed onto the two running track legs (flanges), thereby increasing the vertical loading capacity of the construction, thereby further increasing the defined height of the construction. It is expected that this tightly fixed screw-fastened construction (with heavy steel keel) can be used for load-bearing walls when limited to "gypsum board only exposed to fire" applications.

Named 39 space between the panels 24 and 34 The role of the insulator reduces heat transfer from one wall panel to the other. The perforations 31 in one side 28 of the slot clamp allow passage on the slot clamp 26 The air passing through the slot clamp 26 circulates and reduces direct heat transfer from one wall panel to the other wall panel through one side 28 of the slot clamp.

The film 10 shown can be supplemented during the fire protection process. According to Alternatively, another series of channel clamps 26 can be secured to the second layer 34 in the same manner as the slot clamps 26 shown, and the third series of firewall plates can be secured to the second series of channel clamps 26. on. Moreover, it is important to select the length of the screw so that it does not penetrate the entire thickness of the film. Alternatively, the third layer of protective wall panel can be simply applied directly to the second layer 34 in terms of less need. In these and other variations of construction, it is important that the screws do not extend through the exposed surface of the wall panels on either side of the membrane.

It is obvious that the present disclosure is by way of example, and various changes may be made by the addition, modification or deletion of the details without departing from the scope of the invention. Therefore, the invention in its broader aspects is not limited to the details

10‧‧‧ film or wall

11‧‧‧ keel

12‧‧‧Fireproof gypsum board

24 ‧ ‧ layer

26‧‧‧ slot clamp

34‧‧‧ layer

Claims (8)

A refractory film comprising: a plurality of regularly spaced parallel elongated metal sheet frame elements; a first layer of firewall board directly attached to the frame original member using a screw; and a first wall panel layer One side opposite the other side of the frame original, substantially without any directly connected cover layer; an elongated parallel metal plate axis grid covering the first wall plate and extending with screws Secured to the keel by the first wallboard layer, wherein the right corner of the shaft is oriented with the keel; and a second layer of firewall panels overlying the shaft and spaced from the first layer by the shaft Wherein the second wall panel is attached to the shaft using screws, wherein the screw has a length sufficient to completely penetrate the first wall panel layer. The refractory film of claim 1, wherein the keel is supported by an elongated metal flat steel, wherein the flat steel is along a side of the keel to which the first fireproof layer of the wallboard is attached, The other side of the keel extends, or through the hole in the connecting plate of the keel, the supporting flat steel is screwed to the keel, wherein the screw is mounted on one side of the keel to which the wall plate is attached Driven by the work of the person. The refractory film of claim 1, wherein the shaft is an extended trough clamp. A refractory film according to claim 3, wherein the grooved clip has an asymmetrical cross section. The refractory film of claim 4, wherein the grooved clip has two sides and an intermediate connecting plate, a longer side of the side having a flange in a plane parallel to the connecting plate, the convex The rim is attached to the keel by a screw passing through the first fire barrier of the wall panel. The refractory film of claim 5, wherein the channel clips and their respective flanges are oriented depending on the side of the associated channel clip. The refractory film of claim 6, wherein the longer one side forms a hole in a regular pattern along its length direction. A method of preparing a fireproof film comprising a wall or a ceiling, wherein the fireproof film comprises a plurality of aligned metal plates on a plane spaced apart from each other, and the first firewall plate is fastened to one side of the keel using a screw while The opposite side is substantially free of the attached cover structure, and a plurality of elongated flat steel shafts are fastened to the layer of the firewall panel at positions parallel to each other and perpendicular to the side of the keel, and Fastening a second layer of the firewall panel to the shaft using a screw, wherein the length of the screw is limited to a distance between a face of the first layer adjacent the keel and a face of the second layer remote from the axis .