Abstract:
A track for a wall construction for use in building construction is disclosed. Embodiments can include a track having a plurality of bendable tabs that can be manipulated to grip or release wall studs to prevent lateral or side to side movement of the studs. Embodiments can include tracks which incorporate various geometries capable of receiving fire-retardant material, including but not limited to intumescent material.

Description:
INCORPORATION BY REFERENCE TO ANY PRIORITY APPLICATIONS 
       [0001]    Any and all applications for which a foreign or domestic priority claim is identified in the Application Data Sheet as filed with the present application are hereby incorporated by reference herein. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention generally relates to a metal stud and track framing system for use in building constructions, particularly for use in the interior and/or exterior wall of a building. In particular, the present invention relates to a fire-rated and non-fire rated track having a stud retention feature. 
         [0004]    2. Description of the Related Art 
         [0005]    A wall assembly commonly used in the construction industry includes a header track, bottom track, a plurality of wall studs and a plurality of wall board members, possibly among other components. A typical header track resembles a generally U-shaped (or some other similarly shaped) elongated channel capable of receiving or covering the ends of wall studs and holding the wall studs in place. The header track also permits the wall assembly to be coupled to an upper horizontal support structure, such as a ceiling or floor of a higher level floor of a multi-level building. 
         [0006]    Header tracks generally have a web and at least one flange extending from the web. Typically, the header track includes a pair of flanges, which extend in the same direction from opposing edges of the web. The header track can be a slotted header track, which includes a plurality of slots spaced along the length of the track and extending in a vertical direction. When the wall studs are placed into the slotted track, each of the plurality of slots accommodates a fastener used to connect the wall stud to the slotted track. The slots allow the wall studs to move generally orthogonally relative to the track. In those areas of the world where earthquakes are common, movement of the wall studs is important. If the wall studs are rigidly attached to the slotted track and not allowed to move freely in at least one direction, the stability of the wall and the building might be compromised. With the plurality of slots, the wall studs are free to move. Even in locations in which earthquakes are not common, movement between the studs and the header track can be desirable to accommodate movement of the building structure due to other loads, such as stationary or moving overhead loads, as described above. 
         [0007]    Slotted track has become a staple product for providing vertical deflection movement across the U.S. within head-of-wall assemblies. The slots are generally ¼ inch by 1-½ inch spaced 1 inch on center vertically along the length of the track leg. These slots have become a source for sound flanking as unsealed slots at the head-of-wall joint will allow sound, smoke, or light to pass from one side of the wall to the other through the unsealed slot. During installation, extra labor is required as mechanical framing screws are used through the slotted track into the stud on both sides of the wall. When the drywall is installed over this framing attachment point, the drywall humps up around the framing screw causing the drywall to flare out away from the framing. When the drywall flares out away from the framing, it no longer maintains a tight seal to the framing and can provide smoke or sound flanking paths through and or around the slots. This flared out drywall around the framing screw also creates an uneven wall surface and requires extra joint compound to create the illusion of an even wall surface. 
         [0008]    It is also desirable or even mandatory to provide fire block arrangements at one or more linear wall gaps, which may be present between the top, bottom or sides of a wall and the adjacent structure. The fire block arrangements often involve the time-consuming process of inserting by hand a fire resistant material into the wall gap and then applying a flexible sealing layer to hold the fire resistant material in place. More recently, heat-expandable intumescent fire block materials have been integrated into the top or bottom track of the stud wall assembly. 
       SUMMARY OF THE INVENTION 
       [0009]    Several preferred embodiments of a track having a plurality of bendable tabs are described herein, typically in the context of a wall assembly. One aspect of a track disclosed herein provides a way to secure metal studs to the header track and/or bottom track without driving traditional mechanical framing screws through the leg of the track into the vertically placed studs. In one embodiment, a C-shaped tab track receives the vertically placed metal studs and has a series of, for example, 1/16 inch wide slits spaced apart, for example, approximately every ⅝ to 1-½ inch on center, starting at the open end of the track legs and going vertically up the leg toward the web. The 1/16 inch wide slits run, for example, about ½ inch to 1-inch up the leg of the track within the inward bent portion or straight part of the leg of the tab track. The tab track can be made from light gauge sheet steel and can be manufactured with standard roll form tooling or on a brake press, for example. 
         [0010]    Once the studs are nested into the header track, the pre-bent vertical legs with slits provide a series of tabs that allow numerous locations to lock or secure the vertical studs in place and prevent lateral side to side movement of the studs along the length of the stud wall/header track/footer track. The stud can be installed by inserting the stud at about 90 degrees from its normal position and then rotating the stud into place, thereby outwardly deflecting the tab or tabs aligned with the stud. The tabs adjacent the stud remain inwardly bent to secure the stud in place. To move the stud to a different location, the installer can rotate the stud a half turn which will free up the stud out of the restrictions of the tabs. 
         [0011]    Metal stud framing in today&#39;s construction industry is more precise than ever because the wall framing has to share space with more mechanical, electrical, plumbing and data (MEP&#39;s) than ever before. In many cases the stud layout gets the lowest priority of importance over the placement of MEP&#39;s. For this reason, a stud must be able to have the flexibility to go anywhere necessary to get around the MEP&#39;s. 
         [0012]    In the past, metal stud wall framing assemblies that provided set attachment points at 8 inch or 4 inch on center in hopes to provide attachment points for all studs have not been successful because studs, although they cannot exceed the maximum allowable spacing of 16 inch or 24 inch, many times will be less than the maximum spacing in order to work around MEP&#39;s. 
         [0013]    For these reason it would be of great value to create a manufactured framing system that provides, in some configurations, the required vertical deflection movement, allows the studs to be placed anywhere within the wall, connects the stud to the track to prevent side to side or lateral movement along the wall length, is made from a solid track in at least an upper portion of the side flange that did not allow smoke, sound or light to travel through the wall, and does not require the extra labor or the cost for additional framing screws or crimping devises at each side of the stud at both top and bottom. 
         [0014]    In one aspect, a track for a fire-rated or non-fire rated wall assembly for a linear wall gap is disclosed. The track includes a web, a first flange and a second flange, wherein the web is substantially planar and has a first side edge and a second side edge, the first flange and the second flange extend in the same direction from the first and second side edges, respectively, wherein each of the first and second flanges is substantially planar such that the track defines a substantially U-shaped cross section, each of the first and second flanges has a free end opposite a respective one of the first side edge and second side edge, each of the first and second flanges has a plurality of slits, each of the slits having a first end adjacent to the free ends of the first and second flanges and a second end opposite the first end, the plurality of slits defining a plurality of tabs in which each adjacent pair of the plurality of slits forms a tab therebetween. 
         [0015]    In some aspects, a length of each of the slits is 1 inch, a width of each of the slits is ⅛ inch, and the tabs are spaced apart 1-¼ inch on center along the length of track. In some aspects, the tabs extend one-third of the length of the first and second flanges as measured from the free ends of the first and second flanges. In some aspects, prior to use, the tabs are aligned with the first and second flanges. In some aspects, the tabs are bendable from a bent to an unbent configuration and from an unbent to a bent configuration. In some aspects, the track further includes a first indicator marked on the upper portion of each of the first and second flanges, the first indicator vertically aligned with at least one slit. In some aspects, the track further includes a second indicator marked on the upper portion of each of the first and second flanges, the second indicator vertically aligned with a second slit having a first end adjacent to the free ends of the first and second flanges and a second end opposite the first end, the second indicator spaced 8 inches apart from the first indicator. 
         [0016]    In some aspects, the track further includes an opening at the second end of each of the plurality of slits, the opening having a width twice a width of the associated slit. In some aspects, the track further includes at least one fire-retardant material strip attached to the track such that the at least one fire-retardant material strip extends lengthwise along a surface of the track. In some aspects, the fire-retardant material strip extends along one or both of the first and second side edges of the web of the track. In some aspects, corners of a free end of the tabs are rounded. In some aspects, the track further includes a compressible foam strip adhesively applied lengthwise along the web of the track. 
         [0017]    In another aspect, a wall assembly for a fire-rated or non-fire rated wall having a linear wall gap includes a footer track; a header track comprising a web, a first flange and a second flange, wherein the web is substantially planar and has a first side edge and a second side edge, the first flange and the second flange extend in the same direction from the first and second side edges, respectively, wherein each of the first and second flanges is substantially planar such that the header track defines a substantially U-shaped cross section, each of the first and second flanges has a free end opposite a respective one of the first side edge and second side edge, each of the first and second flanges has at least one slit, the slit having a first end adjacent to the free ends of the first and second flanges and a second end opposite the first end, the slit forming at least two tabs adjacent the free ends of the first and second flanges, the header track having at least one fire-retardant material strip attached thereto such that the at least one fire-retardant material strip extends lengthwise along a surface of the header track; a plurality of studs extending between the footer track and the header track; and at least a first wall board supported by the plurality of studs; wherein the header track is attached to an overhead structure and the bottom track, wall studs and wall board is movable relative to the header track, and wherein each of the at least two tabs are bent inwardly to capture one of the plurality of studs therebetween. 
         [0018]    In some aspects, the footer track comprises a web, a first flange and a second flange, wherein the web is substantially planar and has a first side edge and a second side edge, the first flange and the second flange extend in the same direction from the first and second side edges, respectively, wherein each of the first and second flanges is substantially planar such that the footer track defines a substantially U-shaped cross section, each of the first and second flanges has a free end opposite a respective one of the first side edge and second side edge, each of the first and second flanges has at least one slit, the slit having a first end adjacent to the free ends of the first and second flanges and a second end opposite the first end, the slit forming at least two tabs adjacent the free ends of the first and second flanges. 
         [0019]    In some aspects, prior to use, the tabs are aligned with the first and second flanges of the header track. In some aspects, the header track has at least one fire-retardant material strip attached thereto such that the at least one fire-retardant material strip extends lengthwise along a surface of the header track. In some aspects, the at least one fire-retardant material strip is an intumescent tape. 
         [0020]    In yet another aspect, a method of assembling a fire-rated wall having a linear wall gap is disclosed. The method includes attaching a footer track to a horizontal floor element; attaching a header track to a horizontal ceiling element, the header track comprising a web, a first flange and a second flange, wherein the web is substantially planar and has a first side edge and a second side edge, the first flange and the second flange extend in the same direction from the first and second side edges, respectively, wherein each of the first and second flanges is substantially planar such that the header track defines a substantially U-shaped cross section, each of the first and second flanges has a free end opposite a respective one of the first side edge and second side edge, each of the first and second flanges has at least one slit, the slit having a first end adjacent to the free ends of the first and second flanges and a second end opposite the first end, the slit forming at least two tabs adjacent the free ends of the first and second flanges, the header track having at least one heat-expandable intumescent strip attached thereto such that the at least one heat-expandable intumescent strip extends lengthwise along a surface of the header track; positioning a plurality of studs between the footer track and the header track; bending at least one of the plurality of tabs towards each of the plurality of studs until the tab contacts and grips the stud; and attaching at least one piece of wallboard to the plurality of studs. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0021]    Certain features, aspects and advantages of the various devices, systems and methods presented herein are described with reference to drawings of certain embodiments, which are intended to illustrate, but not to limit, such devices, systems, and methods. It is to be understood that the drawings are for the purpose of illustrating concepts of the embodiments discussed herein and may not be to scale. For example, certain gaps or spaces between components illustrated herein may be exaggerated to assist in the understanding of the embodiments. Dimensions, if provided in the specification, are merely for the purpose of example in the context of the specific arrangements shown and are not intended to limit the disclosure. 
           [0022]      FIG. 1  is a profile illustration of a track that may be used as a header track or a bottom track for wall construction, according to one embodiment. 
           [0023]      FIG. 2  is a side view illustration of the track of  FIG. 1 . 
           [0024]      FIG. 3  is a perspective illustration of the track of  FIG. 1  with the tabs bent inward. 
           [0025]      FIG. 4  is an illustration of a head-of-wall and bottom-of-wall assembly incorporating the track of  FIG. 1 . 
           [0026]      FIG. 5  is a close-up view of a stud held in place with a track, such as the track shown in  FIG. 1 . 
           [0027]      FIG. 6A  illustrates another perspective view of the track of  FIG. 1 . 
           [0028]      FIG. 6B  is an overhead view of the track of  FIG. 6A . 
           [0029]      FIG. 6C  is a side view of the track of  FIG. 6A . 
           [0030]      FIG. 6D  is a profile view of the track of  FIG. 6A . 
           [0031]      FIG. 6E  is a close-up view of one of the slits between the tabs of the track of  FIG. 6A . 
           [0032]      FIG. 7A  is a perspective view of a track with some of the tabs bent inwards toward the web of the track. 
           [0033]      FIG. 7B  is a side view of the track of  FIG. 7A . 
           [0034]      FIG. 7C  is a profile view of the track of  FIG. 7A . 
           [0035]      FIG. 7D  is an overhead view of the track of  FIG. 7A . 
           [0036]      FIG. 8  is a side view of another embodiment of a track having a plurality of tabs. 
           [0037]      FIG. 9  is a profile view of the track shown in  FIG. 8 . 
           [0038]      FIG. 10  is a perspective view of the track shown in  FIG. 8 . 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0039]    Several preferred embodiments provide a way to secure metal studs to the header track or bottom track without using mechanical screw fasteners. The C- or U-shaped header or bottom track includes a plurality of slits in one or both flanges of the track that form a plurality of tabs in the flanges of the track adjacent the free edge of the flanges. The slits extend partially up the legs or flanges of the track so that the bulk of the track is a solid uninterrupted C- or U-shape profile. The track can, in some embodiments, have fire-retardant material such as intumescent strips added to the surface of the back web of the track to provide fire rated wall assemblies according to UL-2079. 
         [0040]    Referring to  FIGS. 1-3 , a first embodiment of a track  10  comprises a web  22  and two side flanges  24 ,  26 . A lower end of each of the side flanges  24 ,  26  comprises a plurality of tabs  28 ,  29  that may be folded or bent inward towards the web  22  to secure a metal stud, as discussed in greater detail below. Preferably, the side flanges  24 ,  26  form an interior angle with the web  22  of approximately 89 degrees. In other embodiments, the side flanges  24 ,  26  form an interior angle with the web of between approximately 70 and 100 degrees, between approximately 80 and 90 degrees, or between approximately 85 and 90 degrees. In some embodiments, as shown in  FIG. 2 , a height or width  5  of the tabs  28 ,  29  may be approximately ½ inch and a total height or width  7  of the flanges  24 ,  26  may be approximately 2 inches, resulting in a height or width of the flanges  24 ,  26  between the web  22  and the top of the tabs  28 ,  29  of approximately 1-½ inch, which can be solid in some cases to inhibit or prevent the passage of smoke, sound, light or air between the track  10  and the upper end portion of the wallboard (not shown). As shown in  FIG. 1 , the tabs  28 ,  29  may be bent inward toward the web  22  such that a tab displacement  9  is approximately ¼ inch. In some embodiments, the tabs  28 ,  29  are approximately ⅝ inch on center with 1/16 inch wide slits separating each tab, as discussed in greater detail below. 
         [0041]    As further illustrated in  FIG. 2 , in some embodiments, a vertical indicator  11  may be marked on the flanges  24 ,  26  with an inkjet printing method or other method. The indicators  11  may be placed every 8 inch on center to indicate placement of the metal stud. In some embodiments, the vertical indicator  11  may be punched into the surface of the flanges  24 ,  26  with a rotary die, which may create an indentation or a through-hole. 
         [0042]    With reference to  FIGS. 1 and 3 , in some embodiments, one or more pieces or strips of a fire-retardant material  38  may be placed on the exterior surface of the web  22  adjacent to the corners between the web  22  and the flanges  24 ,  26 . The fire-retardant material  38  preferably extends lengthwise along and is attached to the web of the track, but could be attached to the flanges  24 ,  26  in addition or in the alternative. In use, the fire-retardant material  38  can act in helping to prevent fire, smoke, or other debris from moving past the track  10 . Preferably, the fire-retardant material  38  is an intumescent material strip, such as an adhesive intumescent tape. The fire-retardant material  38  is made with a material that expands in response to elevated heat or fire to create a fire-blocking char. One suitable material is marketed as BlazeSeal™ from Rectorseal of Houston, Tex. Other suitable intumescent materials are available from Hilti Corporation, Specified Technologies, Inc., or Grace Construction Products. The intumescent material expands to many times (e.g., up to 35 times or more) its original size when exposed to sufficient heat (e.g., 350 degrees Fahrenheit). Thus, intumescent materials are used as a fire block because the expanding material tends to fill gaps. Once expanded, the intumescent material is resistant to smoke, heat and fire and inhibits fire from passing through the head-of-wall. It is understood that the term fire-retardant material  38  is used for convenience and that the term is to be interpreted to cover other expandable fire-resistant materials as well, such as intumescent paints (e.g., spray-on) or fire-rated dry mix products, unless otherwise indicated. The fire-retardant material  38  can have any suitable thickness that provides a sufficient volume of intumescent material to create an effective fire block, while having small enough dimensions to be accommodated in a wall assembly. That is, preferably, the fire-retardant materials  38  do not cause unsightly protrusions or humps in the wall from excessive build-up of material. In one arrangement, the thickness of the fire-retardant material  38  is between about 1/16 (0.0625) inches and ⅛ (0.125) inches, or between about 0.065 inches and 0.090 inches. One preferred thickness is about 0.075 inches. 
         [0043]    The track  10  can be constructed of any suitable material by any suitable manufacturing process. For example, the track  10  can be constructed from a rigid, deformable sheet of material, such as a galvanized light-gauge steel. However, other suitable materials can also be used. The track  10  can be formed by a roll-forming process. However, other suitable processes, such as bending (e.g., with a press brake machine), can also be used. Preferably, the fire-retardant material(s)  38  are applied during the manufacturing process. However, in some applications, the fire-retardant material(s)  38  could be applied after manufacturing (e.g., at the worksite). 
         [0044]      FIG. 4  illustrates a wall assembly  70  illustrating a head-of-wall assembly  80  and a bottom-of-wall assembly  90  with each assembly incorporating a track  10 . In the head-of-wall assembly  80 , the track  10  is a header track attached to a ceiling surface  16  which may be a concrete ceiling. One or more of the tabs  28 ,  29  are bent inward or remain bent inward, depending on the initial position of the tab, to secure the metal stud  18  near the ceiling. Preferably, a tab  28 ,  29  on each side of the stud  18  in the length direction of the wall is bent inwardly to secure the stud  18  in place. Similarly, the bottom-of-wall assembly  90  also incorporates a track  10 , used as a bottom track that is secured to a floor component  116 . One or more of the tabs  28 ,  29  are bent inward or remain bent inward, depending on the initial position of the tab, to secure the metal stud  18  at the floor. Preferably, a tab  28 ,  29  on each side of the stud  18  in the length direction of the wall is bent inwardly to secure the stud  18  in place. Use of the track  10  as both a header track and a bottom track provides a convenient way to secure a metal stud in a wall assembly without the use of metal fasteners, such as framing screws. Once the studs  18  are nested into the track  10 , the tabs  28 ,  29  can be pushed inward on either side of the stud  18  and from either side of the wall assembly which will prevent the stud  18  from moving back and forth or side to side. Traditional stud layout is typically 16 inches or 24 inches on center. The manufactured tabs of the track  10  can provide a traditional 16 inch and 24 inch stud layout but the track  10  also allows any other combination of stud spacing because the tabs  28 ,  29  are preferably spaced to allow one stud per tab opening. Preferably, the tabs are spaced equally and on center to provide a consistent layout for any stud spacing configuration. The track  10  may also be used for non-standard spacing studs. For example, if a non-standard stud spacing is necessary due to other constraints, slits may be created in the field or at the construction site to form tabs at the location along the flange of the track to secure the stud. Additionally, mechanical fasteners, such as framing screws, may be used to further secure the track to the stud, in addition to the securement provided by the gripping force of the bent tabs on the stud. 
         [0045]      FIGS. 5  illustrates another embodiment of a track with tabs showing the placement of a metal stud within the track. Similar to the track  10  discussed above, the track  110  comprises a web  122  and two side flanges  124 ,  126 . A lower end of each of the side flanges  124 ,  126  comprises a plurality of tabs  128 ,  129  that may be folded or bent inward towards the web  122  to secure a metal stud. When the stud  18  is placed within the track  110  such that the flanges  124 ,  126  are on either side of the stud  18 , the tabs  128 ,  129  may be bent back vertically to receive the stud  18 . Once the stud  18  is in place, the tabs  128 ,  129  may be bent downward vertically to nestle against and securely position the stud  18  within the header track  10 . To move the stud  18  to a different location, the tabs  128 ,  129  can be pulled or rotated away from the stud  18  so that the tabs  128 ,  129  are even with or extend outward from the flanges  124 ,  126 , releasing the stud  18  and allowing it to be removed. 
         [0046]      FIGS. 6A-6E  illustrate another embodiment of a track. The track  210  comprises a web  222  and two side flanges  224 ,  226 . A lower end of each of the side flanges  224 ,  226  comprises a plurality of tabs  228 ,  229 . The track  210  includes slits and keyholes that form the tabs and allow the tabs to be easily bent to receive and secure a metal stud. As shown in  FIG. 6E , in some embodiments, the track  210  has a series of 1/16 inch to ⅛ inch wide slits  30  spaced apart approximately every 1-¼ inch on center, starting at the open or free end of the flanges  224 ,  226  and extending vertically partially along the height or width of the flanges  224 ,  226 . One benefit of having the tab spacing wider than the flange width of the stud is that this spacing allows the stud to have the flexibility of moving to the left or the right within the tab spacing. The typical stud flange width is 1-¼ inch wide. By making the tab spacing ⅛-¼ inch wider than the stud, the installer could easily shift the stud slightly to the right or left which is useful when the drywall is installed. Preferably, the drywall installer needs the framing studs to align with the center of the vertical drywall board joints so having the ability to move the studs, even just slightly without removing framing fasteners is very beneficial as it saves labor and speeds up the drywall installation. 
         [0047]    The slits  30  extend approximately ⅓ of the way up each flange  224 ,  226  as measured from the free end of the flanges  224 ,  226 . As shown, the slits  30  extend partially along the width or height of the flanges  224 ,  226  of the track  210  so that the bulk of the track  210  (preferably the upper portion) is a solid uninterrupted U- or C-shaped profile to prevent sound, smoke, or light from passing through the head-of-wall or bottom-of-wall joint. In some embodiments, the slits  30  extend one-third (⅓) of width or height of the flanges  224 ,  226  as measured from the free end of the flanges. Additionally, the track  210  allows the drywall to be installed tight and flush against the wall framing members because no mechanical fastener is used to attach the stud  18  to the track  210 . As illustrated in  FIGS. 6A-C , some of the tabs  228 ,  229  may be bent inward to secure a metal stud while the remainder or unbent tabs  228 ,  229  continue straight along a plane defined by the flanges  224 ,  226 . 
         [0048]    The slits  30  on the track  210  can be made from a rotary die. Use of a rotary die provides consistency to the manufacture of the slits  30 . A rotary die can also be used to provide an embossed marking along the flanges  224 ,  226  of the track  210  for stud layout, as discussed above with respect to the embossed vertical indicators shown in  FIG. 2 . The embossed markings can be placed every 8 inches on center so that the installer can determine how many embossed markings are between the studs, for accurate stud placement. For example, if the studs are 16 inches on center, there will be one embossed marking on the flanges of the track between the studs and if the studs are 24 inches on center there will be two embossed marked between each stud. 
         [0049]    The upper portion of each slit  30  has a round key hole  32  to enable the tabs  228 ,  229  to bend. In some embodiments, a width of the key hole  32  is up to or equal to twice the width of the slit  30 . The key hole  32  provides flexibility to allow the tabs  228 ,  229  to move inward and outward easily without distorting the profile or leg of the track  10 . Additionally, a round key hole  32  allows the flange  224 ,  226  to remain flat when the tabs  228 ,  229  are pushed in to secure a stud. While a round key hole  32  is illustrated in  FIGS. 6A-6E , any other shape of key hole, such as a square, may be used. 
         [0050]    Preferably, in some embodiments, as shown in  FIGS. 6A-E , the free ends of the tabs  228 ,  229  can have rounded corners to allow the studs to be easily engaged and gripped or locked into place. Tabs having sharp, 90 degree corners have sharp edges that could potentially get stuck on the stud and create difficulty engaging the stud. When the tabs  228 ,  229  are pushed inward on either side of the stud  18 , the tabs create a pocket to grip the stud  18  on both sides of the stud  18 . This pocket prevents lateral movement but it does not restrict the necessary or required vertical deflection movement, if any. 
         [0051]    As discussed above, the track provides a series of pre-bent tabs that provide flexibility and allow the vertical studs numerous locations to lock in place in the track and prevent lateral side to side movement of the stud. To move the stud to a different location, the installer can rotate the stud a half turn which will release the stud out of the restrictions of the tabs. Alternatively, the installer can bend the tabs downward, upward and/or outward to free up the stud. In some embodiments, track can be manufactured with the tabs straight and not pre-bent. When the tabs are not pre-bent, the vertical studs can still be placed anywhere within the series of tabs of the track; however, in this configuration, to engage the stud, the tabs are physically bent by hand or tapped with a hammer on each side of the stud to bend the tabs inward to grip or hold the stud in place and prevent side to side lateral movement of the stud. Pre-bending the tabs during manufacture of the track allows the installer to place and lock-in the studs within the framed wall assembly on layout from the ground and preferably does not require the installer to use a bench or scaffolding to access the top of the wall header track in order to physically push in the tabs on either side of the stud or to mechanically fasten the track to the stud. Any of the embodiments disclosed herein can have pre-bent or straight tabs, or a combination of the two. 
         [0052]    Another embodiment of a track with tabs is illustrated in  FIGS. 7A-D . The track  310  comprises a web  322  and two side flanges  324 ,  326 . A lower end of each of the side flanges  324 ,  326  comprises a plurality of tabs  328 ,  329  that may be folded or bent inward towards the web  322  to secure a metal stud, as discussed above. In these figures, the tabs  328 ,  329  are shown both bent inward to secure a stud and in a straight position in line with the flanges  324 ,  326 . 
         [0053]    Another embodiment of a track with tabs is illustrated in  FIGS. 8-10 . The track  410  comprises a web  422  and two side flanges  424 ,  426 . A lower end of each of the side flanges  424 ,  426  comprises a plurality of tabs  428 ,  429  that may be folded or bent inward towards the web  422  to secure a metal stud, as discussed above. In these figures, the tabs  428 ,  429  are shown in a straight position in line with the flanges  424 ,  426 . Slits  30  separate each of the tabs  428 ,  429  and key holes  32  allow the tabs  428 ,  429  to be more easily bent to secure and release a stud, as discussed in greater detail above with respect to  FIG. 6E . In some embodiments, as shown in  FIGS. 8 and 9 , a height or width  5  of the tabs  428 ,  429  may be approximately ¾ inch and a total height or width  7  of the flanges  424 ,  426  may be approximately 2 inches, resulting in a height or width of the flanges  424 ,  426  between the web  422  and the top of the tabs  428 ,  429  of approximately 1-¼ inch. In some embodiments, the tabs  428 ,  429  are approximately ⅝ inch on center with 1/16 inch wide slits  30  separating each tab, as discussed in greater detail above. 
         [0054]    Tenant Improvement or TI construction is typically used in office build outs. Light gauge steel framing is very common in TI construction. In this type of construction, the steel header track is typically attached directly to the underside of the t-bar ceiling. T-bar ceilings are allowed to float as they are attached with wire hangers to the floor structure above. Floating ceilings need to maintain their flexibility throughout the ceiling so direct attachment of the wall studs and track to a floating ceiling will only make the ceiling and wall more rigid. The more rigid the wall, the more likely sound will pass through the wall. Therefore, it is desirable to have a flexible wall connect to a floating ceiling so that both the wall and the ceiling can maintain their flexibility. The embodiments of the track discussed above provide that flexibility because the studs are only gripped into place by the tabs of the track and are not hard-attached to the track (e.g., by mechanical fasteners). This allows the track the flexibility to move up and down with the ceiling. In order to provide additional sound protection, an adhesively-backed foam tape  39  such as 3M SC URETHANE FOAM TAPE can be factory taped to the track (as shown in  FIG. 3 ) so that when the track is installed against the ceiling it will decouple the steel track from the ceiling and create a compressible gasket seal to prevent sound flanking at the head-of-wall joint. The foam tape  39  preferably extends lengthwise along the web and may be applied to either of the edges of the web of the track or may be applied to the center of the web or at any point along with the width of the web. 
         [0055]    Although this invention has been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof. In particular, while the present fire-block device, system and method has been described in the context of particularly preferred embodiments, the skilled artisan will appreciate, in view of the present disclosure, that certain advantages, features and aspects of the device, system and method may be realized in a variety of other applications, many of which have been noted above. Additionally, it is contemplated that various aspects and features of the invention described can be practiced separately, combined together, or substituted for one another, and that a variety of combination and subcombinations of the features and aspects can be made and still fall within the scope of the invention. Thus, it is intended that the scope of the present invention herein disclosed should not be limited by the particular disclosed embodiments described above, but should be determined only by a fair reading of the claims. 
         [0056]    It should be emphasized that many variations and modifications may be made to the herein-described embodiments, the elements of which are to be understood as being among other acceptable examples. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims. Moreover, any of the steps described herein can be performed simultaneously or in an order different from the steps as ordered herein. Moreover, as should be apparent, the features and attributes of the specific embodiments disclosed herein may be combined in different ways to form additional embodiments, all of which fall within the scope of the present disclosure. 
         [0057]    Conditional language used herein, such as, among others, “can,” “could,” “might,” “may,” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements and/or states. Thus, such conditional language is not generally intended to imply that features, elements and/or states are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and/or states are included or are to be performed in any particular embodiment. 
         [0058]    Moreover, the following terminology may have been used herein. The singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to an item includes reference to one or more items. The term “ones” refers to one, two, or more, and generally applies to the selection of some or all of a quantity. The term “plurality” refers to two or more of an item. The term “about” or “approximately” means that quantities, dimensions, sizes, formulations, parameters, shapes and other characteristics need not be exact, but may be approximated and/or larger or smaller, as desired, reflecting acceptable tolerances, conversion factors, rounding off, measurement error and the like and other factors known to those of skill in the art. The term “substantially” means that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide. 
         [0059]    Any dimensions disclosed herein or included in the accompanying drawings are by way of example only unless specifically claimed. Numerical data may be expressed or presented herein in a range format. It is to be understood that such a range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also interpreted to include all of the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. As an illustration, a numerical range of “about 1 to 5” should be interpreted to include not only the explicitly recited values of about 1 to about 5, but should also be interpreted to also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values such as 2, 3 and 4 and sub-ranges such as “about 1 to about 3,” “about 2 to about 4” and “about 3 to about 5,” “1 to 3,” “2 to 4,” “3 to 5,” etc. This same principle applies to ranges reciting only one numerical value (e.g., “greater than about 1”) and should apply regardless of the breadth of the range or the characteristics being described. A plurality of items may be presented in a common list for convenience. However, these lists should be construed as though each member of the list is individually identified as a separate and unique member. Thus, no individual member of such list should be construed as a de facto equivalent of any other member of the same list solely based on their presentation in a common group without indications to the contrary. Furthermore, where the terms “and” and “or” are used in conjunction with a list of items, they are to be interpreted broadly, in that any one or more of the listed items may be used alone or in combination with other listed items. The term “alternatively” refers to selection of one of two or more alternatives, and is not intended to limit the selection to only those listed alternatives or to only one of the listed alternatives at a time, unless the context clearly indicates otherwise.