Patent Publication Number: US-11643814-B2

Title: Systems for recessing subfloor structures

Description:
RELATED CASES 
     This is a continuation of U.S. patent application Ser. No. 16/507,421, filed Jul. 10, 2019, which claimed priority of and to U.S. Provisional Patent Application Ser. No. 62/696,730, filed Jul. 11, 2018, and U.S. Provisional Patent Application Ser. No. 62/849,632, filed May 17, 2019, all of which are hereby incorporated herein by reference in their entirety. 
    
    
     BACKGROUND OF THE TECHNOLOGY 
     Field of the Technology 
     The present technology relates generally to flooring applications. More particularly, the present technology relates to flooring applications around or adjacent drains. 
     Related Art 
     Many traditional shower enclosures include a raised threshold, often termed a “curb,” that retains water within the shower until the water can be drained out of the enclosure. While such curbs serve a useful purpose, they can present a barrier to entry for those with mobility challenges. Also, conventional designers often feel constrained by the need to incorporate such structure into bathroom designs, as it is thought that a more open design makes better use of available floor space. 
     For at least these reasons, so-called “curbless” or “barrier-free” shower designs are increasingly gaining in popularity. While the aesthetic appeal of such showers is understandable, installation of such showers can pose complications. One such problematic area is that a perimeter of the structure necessary to support and drain water from a curbless shower must be level with the surrounding subfloor to ensure that the shower tiles are installed at the same height as the surrounding floor tiles. This often necessitates reconfiguring the conventional subfloor to ensure that the shower tray is properly positioned relative to the surrounding subfloor: that is, that the shower floor slopes downward from an upper surface of the surrounding subfloor toward a drain. 
     SUMMARY OF THE TECHNOLOGY 
     In accordance with one aspect of the technology, a method is provided for supporting a recessed subfloor panel in a lowered position relative to an adjacent, primary subfloor, the primary subfloor including an overhanging portion extending over and being supported from beneath by one or more floor supports defining a bay therebetween. The method can include positioning a spanning brace within a bay between a pair of floor supports with a first end of the spanning brace positioned beneath and at least partially overhung by an overhanging portion of the primary subfloor. The spanning brace can be secured to lateral, vertical sides of the pair of floor supports such that the spanning brace engages and is supported by the lateral, vertical sides. The overhanging portion of the primary subfloor can be supported atop the spanning brace. A recessed subfloor panel can be supported atop the spanning brace adjacent the recessed subfloor panel at a lower elevation than the adjacent, primary subfloor. 
     In accordance with another aspect of the technology, a flooring installation is provided, including at least two floor supports separated from one another by a span distance, the at least two floor supports each having lateral, vertical side walls between which an opening is defined. A bay can be defined between the at least two floor supports. A primary subfloor can be supported atop and attached to one of the at least two floor supports, the primary subfloor including an overhanging portion overhanging a portion of the bay. A spanning brace can be disposed between the at least two floor supports in the bay, the spanning brace engaging on opposing ends the lateral, vertical side walls of the floor supports, one end of the spanning brace extending beneath and spaced from the overhanging portion of the primary subfloor. A recessed subfloor panel can be supported atop the spanning brace, the recessed subfloor panel being supported at a lower elevation than the overhanging portion of the adjacent, primary subfloor. 
     Various methods of installing, configuring, using, manufacturing and providing support brackets or braces and associated flooring components are also encompassed by the technology disclosed herein. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The following drawings illustrate exemplary embodiments for carrying out the technology. Like reference numerals refer to like parts in different views or embodiments of the present technology in the drawings. 
         FIG.  1    is an exploded, perspective view of a flooring installation in accordance with an embodiment of the present technology; 
         FIG.  2    is another exploded, perspective view of a flooring installation in accordance with an embodiment of the present technology; 
         FIG.  3 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  3 B  is an end view of the support bracket of  FIG.  3 A  as installed within a flooring installation; 
         FIG.  4 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  4 B  is a perspective view of another embodiment of the support bracket of  FIG.  4 A ; 
         FIG.  4 C  is an end view of the support bracket of  FIG.  4 A  as installed within a flooring installation; 
         FIG.  5 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  5 B  is an end view of the support bracket of  FIG.  5 A  as installed within a flooring installation; 
         FIG.  6 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  6 B  is a front view of the support bracket of  FIG.  6 A  as installed within a flooring installation; 
         FIG.  7 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  7 B  is an end view of the support bracket of  FIG.  7 A  as installed within a flooring installation; 
         FIG.  8 A  is a perspective view of two paired support brackets in accordance with an embodiment of the present technology, installed atop a floor joist; 
         FIG.  8 B  is an end view of one of the support brackets of  FIG.  8 A ; 
         FIG.  9 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  9 B  is an end view of the support bracket of  FIG.  9 A  as installed within a flooring installation; 
         FIG.  10 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  10 B  is an end view of the support bracket of  FIG.  10 A  as installed within a flooring installation; 
         FIG.  11 A  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  11 B  is a side view of the support bracket of  FIG.  11 A  as installed within a flooring installation; 
         FIG.  11 C  is a perspective view of an exemplary support bracket in accordance with an embodiment of the present technology; 
         FIG.  11 D  is a side view of the support bracket of  FIG.  11 C ; 
         FIG.  11 E  is a perspective view of a section of a flooring installation with an exemplary support bracket installed therein; 
         FIG.  12 A  is a side view of an exemplary support bracket usage in an exemplary concrete floor installation; 
         FIG.  12 B  is an end view of the support bracket of  FIG.  12 A ; 
         FIG.  13 A  is a side view of an exemplary support bracket usage in an exemplary concrete floor installation; 
         FIG.  13 B  is an end view of the support bracket of  FIG.  13 A ; 
         FIG.  14 A  is a side view of a flooring installation illustrating an embodiment of the present technology installed within a subfloor; 
         FIG.  14 B  is a perspective view a support bracket of the flooring installation of  FIG.  14 A ; 
         FIG.  14 C  is a perspective view a support bracket of the flooring installation of  FIG.  14 A ; 
         FIG.  15    is a perspective view of various components in accordance with the present technology for recessing a portion of a subfloor; 
         FIG.  16    is a top view of some of the components of  FIG.  14 A  shown in an assembled, contracted condition; 
         FIG.  17    is a top view of the assembly of  FIG.  16   , with the assembly extended; 
         FIG.  18 A  is a perspective view of an endcap in accordance with an embodiment of the technology; 
         FIG.  18 B  is a perspective view of another endcap in accordance with an embodiment of the technology; 
         FIG.  19    is a top view of a section of a flooring assembly in accordance with an embodiment of the technology; 
         FIG.  20    is a top view of a section of a flooring assembly in accordance with an embodiment of the technology; 
         FIG.  21 A  is a perspective, side view showing assembly components as they interact with exemplary subfloor components; 
         FIG.  21 B  is an end view of the assembly of  FIG.  21 A ; 
         FIG.  22    is a perspective view of another flooring assembly in accordance with an aspect of the technology, showing an alternate embodiment of a lateral or end brace; 
         FIG.  23    is a more detailed view of the end brace of  FIG.  22   , shown installed atop a spanning brace; 
         FIG.  24    is a side view of a subfloor installation including a drain component; 
         FIG.  25    is a perspective view of a flooring installation having recessed subfloor panels installed therein; and 
         FIG.  26    is a perspective view of an installation in which an alignment tool is being used to align a lateral brace in accordance with another aspect of the technology. 
     
    
    
     DETAILED DESCRIPTION 
     Reference will now be made to the exemplary embodiments illustrated in the drawings, and specific language will be used herein to describe the same. It will nevertheless be understood that no limitation of the scope of the technology is thereby intended. Alterations and further modifications of the inventive features illustrated herein, and additional applications of the principles of the technology as illustrated herein, which would occur to one skilled in the relevant art and having possession of this disclosure, are to be considered within the scope of the technology. 
     Definitions 
     As used herein, the singular forms “a” and “the” can include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a support bracket” can include one or more of such brackets, if the context so dictates. 
     As used herein, the term “substantially” refers to the complete or nearly complete extent or degree of an action, characteristic, property, state, structure, item, or result. As an arbitrary example, an object that is “substantially” enclosed is an article that is either completely enclosed or nearly completely enclosed. The exact allowable degree of deviation from absolute completeness may in some cases depend upon the specific context. However, generally speaking the nearness of completion will be so as to have the same overall result as if absolute and total completion were obtained. The use of “substantially” is equally applicable when used in a negative connotation to refer to the complete or near complete lack of an action, characteristic, property, state, structure, item, or result. As another arbitrary example, a composition that is “substantially free of” an ingredient or element may still actually contain such item so long as there is no measurable effect as a result thereof. 
     As used herein, the term “about” is used to provide flexibility to a numerical range endpoint by providing that a given value may be “a little above” or “a little below” the endpoint. 
     Relative directional terms can sometimes be used herein to describe and claim various components of the present technology. Such terms include, without limitation, “upward,” “downward,” “horizontal,” “vertical,” etc. These terms are generally not intended to be limiting, but are used to most clearly describe and claim the various features of the technology. Where such terms must carry some limitation, they are intended to be limited to usage commonly known and understood by those of ordinary skill in the art in the context of this disclosure. In some instances, dimensional information is included in the figures. This information is intended to be exemplary only, and not limiting. In some cases, the drawings are not to scale and such dimensional information may not be accurately translated throughout the figures. 
     As used herein, a plurality of items, structural elements, compositional elements, and/or materials 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. 
     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 to include all 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 about 5” should be interpreted to include not only the explicitly recited values of about 1 to about 5, but 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 from 1-3, from 2-4, and from 3-5, etc., as well as 1, 2, 3, 4, and 5, individually. 
     This same principle applies to ranges reciting only one numerical value as a minimum or a maximum. Furthermore, such an interpretation should apply regardless of the breadth of the range or the characteristics being described. 
     Invention 
     The present technology relates generally to systems for modifying flooring structures to enable installation of so-called “barrier-free” or “curbless” showers in areas having traditional subfloor construction. 
       FIGS.  1  and  2    illustrate exemplary components of one embodiment of the present system, shown in varying stages of installation. The components generally include one or more surrounding or primary subfloor panels  14  that have top surfaces that collectively define a surrounding subfloor elevation. The surrounding subfloor panels can be considered the equivalent of a conventional subfloor assembly, as such an assembly would typically be provided for any particular installation area. One or more floor supports  18 , in this case floor joists, can have top surfaces arranged at an elevation below the surrounding or primary subfloor elevation. One or more support brackets  12  can each have at least one support shelf upon which one or more recessed subfloor panels can be supported. One or more shower tray panels  16  can be arranged atop the one or more recessed subfloor panels. Generally, an elevation of a top surface of the one or more shower tray panels is at least the same as an elevation of a top surface of the one or more primary subfloor panels, where adjoined with one another. 
     The present technology thus provides systems and methods by which recesses can be formed in conventional subfloor structures to allow shower tray panels to be installed with upper surfaces substantially level with the surrounding subfloor surface. This can allow installation of curbless or barrier-free showers with shower tray panels that are well supported to withstand the forces applied to such panels during ordinary use of the shower installation. The following discussion will focus on aspects of the technology utilized to remove or modify existing subfloor structures. It is to be understood, however, that the present technology can be utilized from the initial stages of building construction such that removal of any subfloor is not necessary: in other words, the present technology can be installed while or before the surrounding subfloor is installed. 
       FIGS.  3  through  13 B  illustrate various support brackets  12   a  through  12   j  for use in various locations or positions in a floor installation and for various subfloor configurations. In these embodiments, the support brackets can be specifically configured depending upon the available support features adjacent to or below the floor installation (e.g., floor joists, adjoining sill plates, surrounding concrete surfaces, wall studs, etc.). 
     As shown in  FIGS.  3 A and  3 B , for example, bracket  12   a  generally includes a support shelf  26  configured to receive thereon a recessed subfloor panel  14   a . A shower tray panel  16  can be supported atop the recessed subfloor panel  14   a . A receiving channel  20  can be provided that can be fit around the end of an adjoining primary subfloor panel  14 . The receiving channel can be defined between a pair of opposing support shelfs or legs, for example, those shown at  21  and  23 . A downwardly extending, generally vertical leg  25  can provide a vertical or elevational spacing between the support shelf  26  and the receiving channel  20 . 
     The sizing and spacing of these various components is carefully configured to ensure that upper surfaces of the shower tray panel  16  and the adjoining or primary subfloor panel  14  are substantially or nearly the same elevation. This can allow seamless installation of a flooring product (e.g., tile or stone or vinyl, etc.) above and across (e.g., spanning) each of the subfloor panel and the shower tray panel without any variances in height of the flooring product. 
     In some embodiments, for example, in the case of bracket  12   a  (and brackets  12   f  and  12   h  discussed below), the brackets are configured to be free-floating, unsupported by any adjoining structure such as a floor joist, sill plate or the like. These support brackets can be used in locations where a surrounding subfloor panel terminates near a floor joist, but not near enough to support the end of the surrounding subfloor panel with the joist. This can be advantageous in locations where it may, for example, be undesirable or impractical to remove enough adjoining subfloor to reveal or gain access to a floor support or joist near this joint between surrounding subfloor panels and shower tray panels. To account for this lack of direct support at these locations, support brackets  12   a ,  12   f  and  12   h  can be provided with reinforcing structure  22  to limit or prevent downward or hinging movement of the support shelf  26  (and thus recessed subfloor panel  14   a ). 
     While the reinforcing structure  22  can take a variety of forms, in the example shown, the reinforcement comprises a thickened portion adjoining the support shelf, the thickened portion including a laterally and upwardly extending opposing leg  24  that transfers the load received by support shelf  26  upwardly into the lower surface of subfloor panel  14 . As the edge of the subfloor panel is not as susceptible to twisting as the support bracket might otherwise be to bending, this opposing leg  24  limits bending or deformation of the support bracket in response to loading on the support shelf. 
     While the reinforcing structure  22  is shown in some views as a solid piece, it is to be understood that an empty space or void can be present between the opposing leg  24  and the vertical leg  25 . Other or additional reinforcing structures can also be utilized, where desired. 
       FIGS.  4 A and  4 C  illustrate an additional support bracket  12   b  which, in this case, includes a separable brace  28  that can allow the height of the receiving channel  20  to be adjusted according to the thickness of the adjoining or surrounding subfloor panel  14 . In this example, the bracket is configured to be secured above floor joist or support  18  by way of fastener  34  (e.g., a bolt) installed through the support bracket openings shown and into the lower support bracket structure. In the embodiment shown at  12   b ′ in  FIG.  4 B , a separable brace  28 ′ can include front holes  30  through which horizontal fasteners can be attached through slots  32  formed in the lower bracket or support. The horizontal fasteners can also include slidable rivets more or less permanently but moveably attached to the two components. These horizontal fasteners can ensure the two brackets are maintained in proper position relative to one another and can prevent the lower bracket from falling into the joist bay during installation. The “L” configuration of the upper bracket can also aid in preventing or limiting deflection. The slots can also provide a sight line by which fasteners  34  installed through the upper bracket can be aligned with corresponding holes in the lower bracket. 
       FIGS.  5 A and  5 B  illustrate bracket  12   c  having a fastener  34 , in this case comprising a screw that can be driven through the subfloor panel  14  and into joist or support  18 .  FIGS.  6 A and  6 B  illustrate a bracket  12   d  that can be installed adjacent a sill plate  36 . 
       FIGS.  7 A and  7 B  illustrate a support bracket  12   e  that can be utilized to straddle a floor joist or support  18 . While the bracket  12   e  is shown as an integral unit, the bracket can be provided in two separable components that separate along upper edge  40 . For example, as shown in additional embodiment  12   e ′ in  FIGS.  8 A and  8 B , the two sections can each be coupled atop the joist in varying locations (or varying degrees of “spread” between the two) and can thus allow for adjustment of the width of the saddle for differing sized joists or studs or trusses. 
       FIGS.  9 A and  9 B  illustrate bracket  12   f  that includes engagement features  42  that can aid in retaining contact between the support bracket and the adjoining subfloor panels  14 . Such features can take the form of punched teeth (similar to those found in truss nail plates) that allow the bracket to slip onto a subfloor panel but resist removal of the bracket once positioned around the subfloor panel. These features can advantageously prevent creep of the bracket relative to the surrounding subfloor panel over time. 
       FIGS.  10 A and  10 B  illustrate an embodiment of the technology in which bracket  12   h  includes a slidable shelf support leg  35 . The shelf support leg can be securely mounted to joist or support  18 , and the remaining bracketry of the support bracket can slidably adjust relative thereto. This embodiment allows installation of the bracket near a floor joist while allowing minor adjustments in distance therefrom. This can be advantageous when a subfloor panel terminates a small distance from a joist. This (and similar brackets shown elsewhere herein) can be particularly advantageous in that it is often not convenient or possible for an installer to cut (in order to remove) subfloor panels directly against structures such as bottom plates, sole plates, sill plates, etc. Due to the width, for example, of circular saw bodies, it may not be possible or convenient to cut directly against such structure. In this case, a short piece of surrounding subfloor may be “hanging” a few inches from such structure: in this case, bracing such structure can be easily and securely accomplished utilizing the bracket(s) shown. 
       FIGS.  11 A and  11 B  illustrate a bracket  12   i  for use in spanning a relatively large distance from one joist  18  to another. This bracket is advantageous in situations where shower tray panel  16  and surrounding subfloor panel  14  adjoin at a location far removed from the leftmost joist  18   a , and where access to the rightmost joist  18   b  is limited. In this case, bracket  12   i  can be coupled to joist  18   a  and can extend beneath the location where the two panels meet to thereby securely surrounding support subfloor panel  14 . A spacer block  46  can be provided on the extension leg to provide support to panel  14 . While not shown in detail, lower portions of the vertical leg, near reference numeral  48 , for example, can be provided with cleats or engagement spikes that engage joist  18  to prevent the vertical leg from being pulled away from the joist. 
       FIGS.  11 C,  11 D and  11 E  illustrate an additional embodiment of bracket  12   i ′ similar to that shown in  FIGS.  11 A and  11 B . In this embodiment, legs “A,” “B” and “C” are configured as an adjustable brace. Hinges “E” can be provided at the junction of legs A-B and A-C to allow angular adjustment of the legs relative to one another. Adjustable teeth can be provided on leg “B,” so that a tongue formed on leg “C” can be secured to leg “B” at varying locations. These features can be advantageous for applications in which the various components are not level with one another: the adjustable feature can allow adjustment of the support bracket to account for misalignment. 
     In another example, not shown in detail in the figures, legs B-C can be hinged relative to one another, and leg “C” can be formed to include telescoping features. Adjustment of the length of the telescoping features can achieve adjustment of the height of leg “B.” 
       FIGS.  12 A through  13 B  illustrate features of the technology for use with concrete subfloors.  FIG.  12 A  illustrates a concrete subfloor  150  within which a recess  152  has been formed. A drain  154  can be located within the recess.  FIGS.  12 A and  13 A  illustrate two exemplary shower tray panel installations that can be located within the recess  152 . In the example of  FIG.  12 A , the shower tray panel  16  is generally thicker than in the example of  FIG.  12 B , on the order of 1.5 inches or larger. In  FIG.  13 A , the shower tray panel  16   t  is generally thinner: on the order of 1.0 inches or less. The installation can include gravel bed  158 , mortar bed  160 , concrete subfloor  150 , shower tray panel  16  and support bracket  12   j.    
     In these examples, support bracket  12   j  can include a variable-use configuration: in the example of  FIGS.  12 A and  12 B , with a thicker shower tray panel  16 , a pair of upper legs  162   a ,  162   b  can extend into the concrete of the concrete subfloor to secure the bracket  12   j  thereto. A lower leg  164  can extend in an opposing direction and can serve to support the shower tray panel  16 . In the example of  FIGS.  13 A and  13 B , the support bracket  12   j  can be rotated such that leg  164  is secured in the concrete of the subfloor, with leg  162   b  serving as a support shelf on which the shower tray panel can be supported. Bracket  12   j  can also serve as a screed point to ensure the correct dimensions are maintained during formation of the recess. 
     While the support bracket  12   j  is shown with one or more legs formed within the concrete subfloor, the bracket can readily be reconfigured to provide a mounting interface that can allow the bracket to be secured to the concrete within the recess in a variety of manners (e.g., threaded fasteners and/or adhesives, etc.). 
       FIG.  14 A  illustrates another exemplary implementation of the present technology. In this figure, a flooring installation  100  is shown that can include at least two floor supports  18   a ,  18   b  separated from one another by a span distance “D.” The at least two floor supports can be configured in a number of manners, but generally serve to support a primary subfloor  14  in the well-known manner. The floor supports can be joists, trusses, dimensional lumber, engineered beams (such as I-beams), etc. As that term is used herein, a floor support can also include a structure adjacent conventional joists or beams, such as an interior wall, foundation wall, etc. Each of the floor supports can include lateral, vertical side walls  18   a ′,  18   b ′ between which an opening or “bay”  102  is defined. 
     A lengthwise-adjustable spanning brace  50  can be disposed between the at least two floor supports  18   a ,  18   b . The spanning brace engages on opposing ends the lateral, vertical side walls  18   a ′,  18   b ′ of the floor supports in such a manner that vertical loads experienced by the spanning brace (e.g., by the recessed subfloor panel  14   a  supported by the spanning brace) are transferred laterally to the floor supports. A recessed subfloor panel  14   a  can be supported atop the spanning brace at a lower elevation than the adjacent, primary subfloor  14 . 
     The recessed subfloor panel  14   a  can take a variety of forms, but is often formed from the same material as is the surrounding primary subfloor  14 . Generally, the recessed subfloor panel will include a height or thickness equal to a height of the surrounding primary subfloor. Thus, an upper surface of a ¾ inch recessed subfloor panel will be positioned ¾ of an inch below the upper surface of a ¾ inch primary subfloor. Generally the recessed subfloor panel will include a width equal to or smaller than the span distance “D” between two floor supports  18   a ,  18   b.    
     In the example shown, primary subfloor  14  extends over the leftmost floor support or joist  18   a  and terminates above the bay  102 . Note that the view shown in  FIG.  14 A  is an end, sectional view—the subfloor and recessed subfloor panel generally prevent access to the bay except for via the overhang space. Conventional methods of recessing subfloors have proved ineffective at supporting the end of the primary subfloor above this empty space. Depending on how far toward the floor support  18   b  the primary subfloor extends, an installer may have very little room between the rightmost end of the primary subfloor  14  and the floor support  18   b  to access the floor support  18   a . In this case, securely attaching structure to this “blind” (e.g., difficult to access) floor support  18   a  can be very difficult, if not impossible, using conventional systems. The present technology addresses these limitations with a number of unique solutions. 
     In the example shown, the spanning brace  50  includes one or more endcaps  42 ,  44  that can be interchangeably coupleable to the ends of the spanning brace. Endcap  42  can include an opening  62  ( FIG.  15   ) in which an end of the spanning brace can be received. Endcap  42  can also include one or more fasteners  64  ( FIGS.  15 - 17   ) that can be used to secure the endcap to the vertical sides  18   a ′,  18   b ′ of the floor supports  18   a ,  18   b . The fasteners can take a variety of forms. In one embodiment, shown by example in  FIGS.  16  and  17   , the fasteners can be strike fasteners that are partially moveable relative to the endcap  42   a  and can be driven into the lateral sides of the floor supports with a tool suitable for use in confined spaces, such as a slide nailer or the like (not shown). 
     In the embodiment shown in  FIGS.  14 A and  15   , endcap  42  can include one or more fasteners  64  in the form of cleats that are rigidly fixed to or formed integrally with the endcap. These can be secured to the sidewalls  18   a ′,  18   b ′ of the floor supports  18   a ,  18   b  by mechanically forcing the cleats into the sidewalls through pressure applied to the endcap. This can be advantageous in embodiments in which very little access can be gained to floor supports  18  (e.g., in which the primary subfloor  14  extends a great deal over the bay  102 ). The arrangement of the spanning brace  50  illustrated in  FIG.  14 A , for example, provides a manner of accomplishing this, as discussed in further detail below. Adhesive can also be applied between the endcap  42 ,  42   a  and the vertical sides of the floor supports to increase the strength of the interface between the two components. 
     In the example shown, the spanning brace  50  can include an inner arm  56  that can be slideable within an outer arm  54 . A series of openings or holes  66  can be formed in each of the inner and outer arms through which pins  68  can be fitted. The inner and outer arms can be adjusted to a macro length just short of span distance “D” (sufficiently short of engaging the sidewalls so that fasteners  64 , where used, do not engage the sidewalls  18   a ′,  18   b ′). Once this macro length adjustment is achieved, the pins can be fitted in the openings to fix the outer and inner arms relative to one another. A threaded rod  70  can be rotatably attached to inner arm  56  such that rotation of the threaded rod causes the overall length of the inner arm to be adjusted. A nut or other engagement feature  72  can be fixed relative to the threaded rod. Adjustment of the nut causes an overall length of the spanning brace to be adjusted on a micro scale.  FIG.  16    illustrates the macro and micro adjustment mechanisms contracted to a smallest dimension.  FIG.  17    illustrates the macro and micro adjustment mechanisms extended to a larger, extended dimension. 
     In use, the macro length of the spanning brace  50  can be adjusted and one or more ends of the spanning brace can be positioned near one or both sidewalls  18   a ′,  18   b ′. Once so positioned, nut  72  can be rotated to adjust the micro length of the spanning brace, which in turn forces cleats  64  securely into one or both of the sidewalls of the floor supports  18   a ,  18   b . As the nut can be accessed from above through a relatively thin space or opening, the spanning brace can be installed and secured even in applications in which the space between a rightmost end of the primary subfloor  14  and the rightmost floor support  18   b  ( FIG.  14 A ) is very small. Once the cleats are securely engaged with the floor support(s), vertical loads experienced by the spanning brace are transferred laterally into the floor supports. The recessed subfloor panel  14   a  can then be installed upon the spanning brace and loads carried by the recessed panel can be transferred into the floor supports. The present technology has proved very effective at carrying loads experienced by the recessed subfloor of at least 50 pounds per square foot (lbs./ft 2 ), with a live load capacity of at least 40 lbs./ft 2  and a dead load capacity of at least 10 lbs./ft 2 . These capabilities meet or exceed all known standards promulgated for such installations. 
     In addition to the endcap  42  having fasteners associated therewith, the system can also include one or more lateral braces  12   k ,  12   m , etc. that can be coupleable to the lateral, vertical sides  18   a ′,  18   b ′ of the floor supports  18   a ,  19   a . The lateral braces can cooperate with ends of the spanning brace  50  to secure the spanning brace relative to the floor supports. Lateral brace  12   m  can typically be used when the lateral, vertical sides of the floor supports can be relatively easily accessed, so that the lateral brace can be easily fastened into the sides of the floor supports using known screws, bolts, adhesives, etc. 
     As best shown in  FIG.  14 B , lateral bracket or brace  12   m  can include a vertical arm  74  from which a lower horizontal arm, shelf or leg  76  and an upper horizontal arm, shelf or leg  78  can extend. An endcap of the spanning brace  50  can be fitted between a receiving channel  20  defined between the horizontal arms  76 ,  78  and thereby secured vertically. Alternately, an end of the spanning brace, without any particular endcap structure attached thereto, can be held in the receiving channel between the horizontal arms. The recessed subfloor panel  14   a  can be secured to the upper surface of horizontal arm  78 . The lateral brace can include structure that extends above the horizontal arm  78  at a specified distance “h” such that installation of the lateral support with the top of the vertical arm  74  flush with the top of the floor support automatically positions the horizontal arm  78  at the proper height. That is, securing the recessed subfloor panel to the horizontal arm  78  results in the top surface of the recessed subfloor panel being flush with the top surface of the floor support. 
     A vertical stop  80  can optionally be formed on the upper portion of the lateral brace  12   m  to serve as an aid in properly aligning the brace with the upper portion of the floor support  18   a ,  18   b . This vertical stop can be formed very thin, on the order of 1/16 of an inch, as it need not carry a great deal of load—it need only support the lateral brace in position prior to fixing the lateral brace to the floor support. Forming the vertical stop with a very thin profile can limit or prevent the vertical stop from significantly interfering with a height of a tile or other structure installed above the vertical stop. This vertical stop can also be included on bracket or brace  12   k  ( FIG.  14 C ), where desirable. 
       FIG.  26    illustrates an alternate manner of aligning a lateral brace. In this example, an alignment tool  90  is provided by which lateral brace  12   m  can be properly aligned with floor support  18 . The alignment tool includes an upper shelf support surface or leg  104  that can be temporarily oriented atop the floor support  18 . When the upper shelf support is supported by the top of the floor support, a lower shelf support surface or leg  106  of the alignment tool is positioned a distance “h” below the top of the floor support. When the upper horizontal arm  78  of the lateral brace is positioned against the upper shelf support surface  104 , a recessed subfloor panel or brace held atop the upper  78  horizontal arm is automatically properly positioned flush with the adjoining top of the floor support  18 . Thus, the alignment tool can be used to quickly and accurately align various components one with another to allow efficient installation of the various components of the system. 
     In one embodiment, the alignment tool  90  can include an extension  108  that includes a thickness “h.” This extension can be sized such that it easily and snugly fits within the receiving channel  20  in the lateral brace  12   m  created between horizontal arms  76  and  78 . Thus, an installer can insert one or more alignment tools in this channel or gap and it will be temporarily held therein. The installer can then simply position the upper shelf support surface  104  upon the top of the floor support  18  and the lateral brace is automatically positioned correctly relative to the floor support. The installer can then couple the lateral brace to the floor support, after which the alignment tool can be easily slid within the lateral brace to an alternate position, or removed from the lateral brace. The alignment tool can be discarded or reused after use, as desired. 
     In the embodiments shown, the recessed subfloor panel  14   a  is carried directly atop the spanning brace  50 . In some embodiments, however, the spanning brace can carry additional structure, such as leveling blocks or spacing blocks (analogous to that shown at  46  in  FIG.  11 B ) that can form a load carrying profile atop which the recessed subfloor panel can be installed. For example, a plate, or several plates, can be carried by an upper portion of the spanning brace to better support the recessed subfloor panel or to adjust a height above the spanning brace at which another structure is supported. While the spanning brace is shown generally rectangular cross-section, it is understood that other configurations can also be used, such as more rounded cross-sections. 
     The present system also includes an end bracket or brace  12   k  that is generally intended to provide support to ends of subfloor members (either recessed or primary) beneath which no floor support is available. This can be the case in both the situation in which the unsupported end of the subfloor runs parallel to the floor supports, as shown in  FIG.  14 A , or in which the unsupported end of the subfloor runs generally perpendicularly to the floor supports, as is shown for example in  FIGS.  21 A and  21 B . In other words, the end brace can extend perpendicularly to the spanning brace  50  ( FIG.  14 A ) or parallel to the spanning brace ( FIG.  21 A ). 
     As shown in more detail in  FIG.  14 C , the end brace  12   k  can include a lower horizontal shelf support surface or leg  82  connected to an upper horizontal shelf support surface or leg  84  by vertical upright  86 . The end brace can include vertical structure that extends above the upper horizontal shelf support surface by a distance “h,” which can correspond to a height of the recessed subfloor panel  14   a . In this manner, positioning an uppermost portion of the end brace at the level of the primary subfloor automatically correctly positions the height of the upper and lower support surfaces in order to support the primary and recessed subfloor panels at the proper height. 
       FIGS.  18 A and  18 B  illustrate various endcap configurations that can be incorporated into the present technology. Generally, each different type of endcap can be interchangeably installed on either end of the spanning brace, to enable use of the spanning brace with a variety of configurations of shower spaces and floor support arrangements. For example, the configurations shown in  FIGS.  20 - 22    illustrate use of the spanning brace  50  with two lateral braces  12   m , utilizing end cap  44 . In the configuration shown in  FIGS.  14 A and  19   , one endcap  44  is coupled to the spanning brace for cooperating with a lateral brace while one endcap  42  is used that includes fasteners  64  that can be at least partially driven into lateral, side surfaces of the floor supports. 
       FIGS.  22 - 25    illustrate a further embodiment of the technology in which end bracket or brace  12   p  is used to support a further recessed subfloor panel  14   a ′ ( FIG.  24   ). As best shown in  FIG.  23   , end bracket or brace  12   p  generally includes a “Z” profile with an upper horizontal leg  110 , a vertical connecting leg  112  and a lower horizontal leg  114 . Horizontal leg  114  generally extends in an opposing direction from vertical leg  112  than does horizontal leg  110 . Bracket  12   p  can be used to even further recess one or more components relative to recessed subfloor panel  14   a . In the embodiment shown in  FIG.  25   , for example, a top surface of recessed panel  14   a ′ is held substantially level with a top surface of spanning brace  50 . In other words, lower horizontal leg  114  (see  FIG.  23   ) is supporting the recessed subfloor panel  14   a ′ while upper horizontal leg  110  (shown partially cutaway in this view) is being supported by the spanning brace  50  (see also  FIG.  23   , without the inclusion of any subfloor panels). 
     The end bracket or brace  12   p  can be coupled atop the spanning brace  50  (or any other brace or support structure) in a number of manners: it can be mechanically fastened atop the brace (e.g. using bolts, screws, adhesive, etc.), or it can be welded or otherwise formed integrally with the spanning brace during manufacture, etc. 
     This aspect of the technology can be advantageous when it is desirable or necessary to lower a drain component even further than is possible by using recessed subfloor panel  14   a  as a support for the drain component. For example, as shown in  FIG.  25   , recessed subfloor panel  14   a ′ can include an opening  116  formed therein into which the drain component ( 88  in  FIG.  24   ) can be partially lowered and supported. By lowering the drain component in this manner, a necessary slope can be maintained in the shower tray or mortar bed extending away from the drain to the primary subfloor elevation. Thus, larger installations can be accommodated, even when the shower tray or mortar extends for some distance away from the drain structure. 
     In addition to the structural features discussed above, the present technology can also provide numerous methods of manufacturing, assembling, and using support brackets and braces; methods of installing floor installations; and methods of configuring floor installations. 
     The present support brackets can be formed from a variety of suitable materials, including, without limitation, extruded aluminum, steel, galvanized steel, etc. While not shown in detail in the figures, varying spacers or liners can be added between the subfloor panels and the support brackets (or between the subfloor panels and the shower tray panels) to adjust a height of the various panels. 
     The technology above is relatively easily installed in and around existing subfloors, even when access to the subfloors from below is not possible. Thus, portions of the subfloor panels can be removed from atop, the support bracketry can be installed from atop. After installation of these components, a shower tray panel or a mortar bed (neither shown) can be installed from atop, in the usual fashion. While not all of the support brackets shown may be necessary for any given installation, multiple support brackets can be provided in a kit to installers so that each bracket necessary for any particular installation is available to the installers. This can be particularly important in that the installer may not know which type of bracketry is necessary until he or she removes the subfloor panels. 
     It is to be understood that the above-referenced arrangements are illustrative of the application of the principles of the present technology. Numerous modifications and alternative arrangements can be devised without departing from the spirit and scope of the present technology as set forth in the examples.