Riser anchor and installation

Abstract

To provide a favorable riser anchor and a favorable installation.SOLUTION: An anchor assembly for riser pipes uses a plate and a sleeve to support a stub pipe which penetrates a floor of a structure, such as a building, in which the riser is located. Studs extending from the plate and the sleeve engage the floor and enhance the local structural strength of the floor. A bracket which engages the plate is used to mount the stub pipe within the sleeve. The riser pipe elements are attached to the ends of the stub pipe. Fire insulation material is positioned between the stub pipe and the sleeve.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This application is based on and claims priority to U.S. Provisional Application No. US63 / 110,082, filed November 5, 2020, which is incorporated herein by reference.

[0002] FIELD OF THEINVENTION The present invention relates to a structural component for supporting pipe elements. [Background technology]

[0003] Vertical piping equipment, commonly referred to as "risers," is essential for the distribution of water and other fluids throughout buildings and other structures. Riser support structures must meet many design requirements, particularly structural demands such as thermal and expansion loads, thrust loads, anticipated regional seismic loads, and often very large static loads imposed by the weight of the riser itself. Moreover, they must meet these design requirements without compromising the local structural integrity of the building in which the riser is located. Traditional riser designs use clamps to secure the riser pipe to floor level and brackets to secure it to adjacent shear walls. However, these designs suffer from various disadvantages because repeated thermal expansion cycles of the riser make riser clamps that rely on friction less effective and supporting shear walls are not always conveniently located relative to the location of the riser. There is clearly an opportunity to improve the design of riser support equipment. Summary of the Invention [Means for solving the problem]

[0004] The present invention relates to an anchor assembly for anchoring a riser pipe in a floor structure. In one exemplary embodiment, the anchor assembly comprises a plate having an upper surface and a lower surface disposed opposite one another. The plate defines an opening therethrough. A sleeve is attached to the plate. The sleeve extends through the opening and defines a bore oriented transversely relative to the plate. The sleeve has an upper sleeve portion having a sleeve top projecting outwardly from the upper surface of the plate and a lower sleeve portion having a sleeve bottom projecting outwardly from the lower surface of the plate. A plurality of collars pass through the plate. Each collar has an internal thread. Each of the plurality of collars has an upper collar surface coplanar with the upper surface of the plate and a lower collar surface projecting from the lower surface of the plate.

[0005] Exemplary embodiments may further include a plurality of studs extending from a lower surface of the plate. A plurality of shear keys may also be attached to the sleeve and may project outwardly away from the bore. The shear keys are attached to a lower sleeve portion of the sleeve. In exemplary embodiments, a stub pipe extends through the bore. A bracket is attached to the stub pipe. The bracket overlies an upper surface of the plate. A plurality of threaded fasteners attach the bracket to the plate. Each fastener engages a respective collar of the plurality of collars. In another example, the bracket includes a plurality of arms projecting transversely to the stub pipe. An upper sleeve portion of the sleeve, in an exemplary embodiment, projects from an upper surface of the plate. The upper sleeve portion defines a plurality of notches therein. Each arm is received within a respective one of the notches. Exemplary embodiments may further include a fire retardant layer positioned between the stub pipe and the sleeve.

[0006] The present invention also includes an arrangement for a riser pipe. In an exemplary embodiment, the arrangement comprises a cast-in-place bed having an upper surface and a lower surface disposed on opposite sides. An anchor assembly is embedded in the cast-in-place bed. In an exemplary embodiment, the anchor assembly comprises a plate having an upper surface and a lower surface disposed on opposite sides. The plate defines an opening therethrough that is aligned with the opening. A sleeve is attached to the plate. The sleeve defines a bore extending through the opening and oriented transversely relative to the plate and the bed. The sleeve includes an upper portion having a sleeve top that projects outwardly from the upper surface of the plate. The sleeve further has a lower portion having a sleeve bottom that projects outwardly from the bottom surface of the plate. A plurality of collars are attached to and pass through the plate. Each collar has an internal thread. Further by way of example, a plurality of studs extend from the lower surface of the plate. The studs are embedded in the bed. Also by way of example, a plurality of shear keys are attached to the lower sleeve portion and project outwardly away from the bore. The shear key resides within the underside of the plate and is embedded in the floor. Further by way of example, each of the plurality of collars may have an upper collar surface coplanar with the upper surface of the plate and a lower collar surface protruding from the underside of the plate.

[0007] Exemplary arrangements according to the present invention may further include a stub pipe extending through the bore. A bracket is attached to the stub pipe. The bracket overlies an upper surface of the plate. A plurality of threaded fasteners attach the bracket to the plate. Each fastener engages a respective collar of the plurality of collars. In certain examples, the bracket may include a plurality of arms projecting transversely relative to the stub pipe. The upper sleeve portion defines a plurality of notches therein. Each arm is received within a respective one of the notches. As a further example, a fire retardant layer may be positioned between the stub pipe and the sleeve. In exemplary embodiments, the upper surface of the plate is flush with an upper surface of the floor. In certain embodiments, the sleeve bottom is flush with a lower surface of the floor. The floor may include a concrete slab or a metal deck arranged beneath the concrete slab in exemplary embodiments. The present specification also provides, for example, the following items: (Item 1) 1. An anchor assembly for anchoring a riser pipe in a floor structure, the anchor assembly comprising: a plate having oppositely disposed upper and lower surfaces, the plate defining an opening therethrough; a sleeve attached to the plate, the sleeve defining a bore extending through the opening and oriented transversely to the plate, the sleeve including an upper sleeve portion having a sleeve top projecting outwardly from the upper surface and a lower sleeve portion having a sleeve bottom projecting outwardly from the lower surface; a plurality of collars extending through said plate, each of said collars having an internal thread; An anchor assembly comprising: (Item 2) 2. The anchor assembly of claim 1, wherein each of the plurality of collars has an upper collar surface coplanar with the upper surface and a lower collar surface protruding from the lower surface. (Item 3) Item 1. The anchor assembly of item 1, further comprising a plurality of studs extending from the underside of the plate. (Item 4) 4. The anchor assembly of claim 3, wherein each of the plurality of studs includes an enlarged head. (Item 5) Item 1. The anchor assembly of item 1, further comprising a plurality of shear keys attached to the lower sleeve portion and projecting outwardly away from the bore. (Item 6) a stub pipe extending through the bore; a bracket attached to the stub pipe, the bracket overlying the top surface of the plate; and a plurality of threaded fasteners attaching the bracket to the plate, each of the plurality of threaded fasteners engaging a respective collar of the plurality of collars; Item 2. The anchor assembly of item 1, further comprising: (Item 7) 7. The anchor assembly of claim 6, further comprising a fireproofing layer positioned between the stub pipe and the sleeve. (Item 8) the upper sleeve portion includes a plurality of notches formed therein; the plurality of collars are positioned on the plate in alignment with the plurality of notches; 7. The anchor assembly according to item 6. (Item 9) 9. The anchor assembly of claim 8, wherein the bracket includes a plurality of arms projecting transversely to the stub pipe, each of the plurality of arms being received within a respective one of the notches. (Item 10) 1. An installation for a riser pipe, said installation comprising: a poured-in-place bed having an upper bed surface and a lower bed surface disposed on opposite sides; an anchor assembly embedded in the floor; The anchor assembly comprises: a plate having oppositely disposed upper and lower surfaces, the plate defining an opening therethrough; a sleeve attached to the plate, the sleeve defining a bore extending through the opening and oriented transversely to the plate, the sleeve including an upper sleeve portion having a sleeve top projecting outwardly from the upper surface and a lower sleeve portion having a sleeve bottom projecting outwardly from the lower surface; a plurality of collars extending through said plate, each of said collars having an internal thread; Equipped with, facilities. (Item 11) Item 11. The arrangement of item 10, wherein each of the plurality of collars has an upper collar surface coplanar with the upper surface and a lower collar surface protruding from the lower surface. (Item 12) Item 11. The fixture of item 10, further comprising a plurality of studs extending from the underside of the plate, the studs being embedded in the floor, each of the plurality of studs including an enlarged head. (Item 13) Item 11. The arrangement of item 10, further comprising a plurality of shear keys attached to the lower sleeve portion and projecting outwardly away from the bore, the shear keys being embedded in the floor. (Item 14) Item 11. The apparatus of item 10, wherein the upper surface of the plate is flush with the upper floor surface. (Item 15) Item 11. The equipment of item 10, further comprising a plurality of notches formed in the upper sleeve portion. (Item 16) a stub pipe extending through the bore; a bracket attached to the stub pipe, the bracket overlying the upper surface of the plate, the bracket including a plurality of arms projecting transversely relative to the stub pipe; a plurality of threaded fasteners attaching the plurality of arms to the plate, each of the plurality of threaded fasteners engaging a respective collar of one of the plurality of collars; Item 16. The equipment according to item 15, further comprising: (Item 17) Item 17. The installation of item 16, further comprising a fireproofing layer positioned between the stub pipe and the sleeve. (Item 18) 11. The installation according to claim 10, further comprising a plurality of cast-in-place blocking elements, each of the plurality of cast-in-place blocking elements being attached to the lower collar surface of one of the plurality of collars. (Item 19) 20. The arrangement of claim 18, wherein the plurality of cast-in-place isolation elements comprises a plurality of silicone covers. (Item 20) 20. The arrangement of claim 18, wherein the plurality of cast-in-place isolation elements comprises a plurality of temporary plastic fasteners. (Item 21) 20. The arrangement of claim 18, wherein the plurality of cast-in-place isolation elements comprises a plurality of plastic caps. (Item 22) 1. An installation for a riser pipe, said installation comprising: a poured-in-place bed having an upper bed surface and a lower bed surface disposed on opposite sides; an anchor assembly embedded in the floor for anchoring the riser pipe to the floor; The anchor assembly comprises: a plate having oppositely disposed upper and lower surfaces, the plate defining an opening therethrough; a sleeve attached to the plate, the sleeve defining a bore extending through the opening and oriented transversely to the plate, the sleeve including an upper sleeve portion having a sleeve top projecting outwardly from the upper surface and a lower sleeve portion having a sleeve bottom projecting outwardly from the lower surface; a plurality of collars extending through said plate, each of said collars having an internal thread, each of said plurality of collars having an upper collar surface coplanar with said upper surface and a lower collar surface protruding from said lower surface; Equipped with, facilities. (Item 23) 22. The apparatus of claim 21, wherein the top surface is flush with the upper floor surface and the sleeve bottom is flush with the lower floor surface. (Item 24) a plurality of notches formed in said upper sleeve portion; a bracket overlying the upper surface of the plate, the bracket including a plurality of arms projecting transversely relative to the riser pipe; a plurality of threaded fasteners attaching the plurality of arms to the plate, each of the plurality of threaded fasteners engaging a respective collar of one of the plurality of collars; 22. The equipment according to item 21, further comprising: (Item 25) 25. The arrangement of claim 24, wherein the bracket is attached to the riser pipe. (Item 26) 26. The installation of claim 25, further comprising a fireproofing layer positioned between the riser pipe and the sleeve. (Item 27) 25. The fixture of claim 24, further comprising a stub pipe extending through the bore, the bracket being attached to the stub pipe. (Item 28) 28. The installation of claim 27, further comprising a fireproofing layer positioned between the stub pipe and the sleeve. (Item 29) 25. The system of claim 24, wherein the poured-in-place floor comprises a concrete floor. (Item 30) 25. The installation of claim 24, wherein the cast-in-place floor comprises a cast-in-place concrete floor on a metal deck. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of an exemplary anchor assembly according to the present disclosure.

[0009] [Diagram 2] FIG. 2 is an elevational view of the anchor assembly shown in FIG.

[0010] [Diagram 3] 3 is an elevational view of the anchor assembly shown in FIG. 1, the view being rotated 45 degrees relative to the view shown in FIG.

[0011] [Figure 4] FIG. 4 is a detailed view of the exemplary anchor assembly shown in FIG. 1 illustrating additional components in accordance with the present invention.

[0012] [Diagram 5] FIG. 5 is an alternative detailed view of the exemplary anchor assembly shown in FIG. 1 illustrating additional components in accordance with the present invention.

[0013] [Figure 6] FIG. 6 is an alternative detailed view of the exemplary anchor assembly shown in FIG. 1 illustrating additional components in accordance with the present invention.

[0014] [Figure 7] FIG. 7 is a top view of the exemplary anchor assembly shown in FIG. 1 illustrating additional components in accordance with the present invention.

[0015] [Figure 8] FIG. 8 is an elevational view of the anchor assembly shown in FIG.

[0016] [Figure 9] 9 is an elevational view of the anchor assembly shown in FIG. 4, the view being rotated 45 degrees relative to the view shown in FIG.

[0017] [Figure 10] FIG. 10 is a longitudinal cross-sectional view of an exemplary installation according to the present disclosure.

[0018] [Figure 11] FIG. 11 is a longitudinal cross-sectional view of another exemplary installation according to the present disclosure.

[0019] [Figure 12] FIG. 12 is a longitudinal cross-sectional view of another exemplary installation according to the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] (Detailed Description) 1-3 show an exemplary anchor assembly 10 for anchoring a riser pipe (see FIGS. 10-12) in a floor structure (see FIGS. 10-12). In this embodiment, the anchor assembly 10 comprises a plate 12 having an upper surface 14 and a lower surface 16 disposed opposite one another, the plate 12 defining an opening 18 extending therethrough. A sleeve 20 is attached to the plate 12. The sleeve defines a bore 22 extending through the opening 18 and oriented transversely relative to the plate 12. The sleeve 20 includes an upper sleeve portion 24 having a sleeve top 26 projecting outwardly from the upper surface 14 of the plate 12. The sleeve 20 further includes a lower sleeve portion 28 having a sleeve bottom 30 projecting outwardly from the lower surface 16 of the plate 12. It is advantageous if the upper sleeve portion 24 of the sleeve 20 projects beyond the upper surface 14 of the plate 12 to act as a water dam and prevent flooding between floors when the assembly 10 is installed.

[0021] The anchor assembly 10 may further include a number of studs 32 extending from the underside 16 of the plate 12. In one embodiment, the studs 32 are welded to the plate 12 and have enlarged heads 34. When the assembly 10 is disposed in a cast-in-place floor, such as concrete, the studs 32 form a composite structure with the floor, providing fixity and maintaining the orientation and location of the assembly during the casting of the concrete and subsequent curing. The studs 32 also locally strengthen the concrete floor against punching shear failure and slab crushing failure. The studs 32 increase the area engagement between the anchor assembly 10 and the floor (see FIGS. 10-12), which increases the load the assembly and floor can withstand.

[0022] 1-3, a plurality of collars 36 are attached to and extend through the plate 12. Each collar 36 has internal threads 38 for establishing an attachment point to the plate 12 and receiving a threaded fastener, as described below. Each of the plurality of collars 36 has an upper collar surface 40 and a lower collar surface 42. When the plurality of collars 36 are mounted to the plate 12, the upper collar surface 40 may be mounted flush against the upper surface 14 of the plate 12, thereby preventing damage during and after construction. In one embodiment, the plurality of collars 36 are mounted to the plate 12, with the lower collar surface 42 projecting outwardly from the lower surface 16. When positioned on the lower surface 16, the collars 36 may be protected during a concrete pour to prevent them from becoming clogged with concrete and to be ready to receive fasteners 64. One embodiment utilizes a plurality of cast-in-place isolation elements 44 to prevent intrusion of the pour bed (such as concrete) from clogging the collar 36. Figure 4 illustrates one embodiment of a cast-in-place isolation element 44 that includes a silicone cover 46. Figure 5 illustrates another embodiment in which the cast-in-place isolation element 44 includes a temporary plastic fastener 48 that can be removed once the pour bed has solidified. Figure 6 illustrates yet another embodiment in which the cast-in-place isolation element 44 includes a plastic plug 50. However, it should be understood that a variety of cast-in-place isolation elements 44 are contemplated by the present disclosure.

[0023] 10 and 11 illustrate a further embodiment of the anchor assembly 10 including a stub pipe 52 extending through the bore 22 of the sleeve 20. The stub pipe 52 allows for attachment of a riser pipe element 54 to the anchor assembly 10 and may have one or more circumferential grooves 56 located in its outer surface. The grooves 56 are present when a mechanical coupling is used to join the riser pipe element 54 to the stub pipe 52 and are therefore located proximate to the end of the stub pipe 52. A bracket 58 is affixed to the stub pipe 52 and attaches the stub pipe 52 to the plate 12. The bracket 58 may include multiple arms, and in one embodiment, a first arm 60 and a second arm 62 are attached to and project transversely relative to the stub pipe 52. The bracket 58 overlies the top surface 14 of the plate 12 and is attached to the plate via a plurality of threaded fasteners 64. Each fastener engages a respective collar 36. It is advantageous to have the bracket 58 in direct contact with the plate 12 to distribute the downward force over as large an area as possible. Thus, the upper sleeve portion 24 of the sleeve 20 includes a plurality of notches, in this embodiment including a first notch 66 and a second notch 68. The first arm 60 and the second arm 62 are received within the first notch 66 and the second notch 68 to allow for direct contact between the arms and the plate. In one embodiment, a plurality of collars 36 are positioned on the plate 12 in alignment with the plurality of notches 66, 68. Of course, it will be understood that the bracket 58 may include additional arms 60, 62 and that additional collars 36 may also be provided depending on the particular design specifications. As shown in Figures 10 and 11, a fire-stopping layer 70 is positioned between the stub pipe 52 and the sleeve 20. The various components of the anchor assembly (except for the firestop) may be formed from steel, and attachment of the various components via weldments is deemed practical.

[0024] As further shown in Figures 10 and 11, the present disclosure also includes an arrangement 72. The exemplary arrangement 72 includes an anchor assembly 10 disposed in a cast-in-place floor 74, preferably concrete. It is advantageous if the top surface 14 of the plate 12 is disposed so as to be flush with an upper floor surface 76 of the cast-in-place concrete floor 74. Additionally, the sleeve bottom 30 of the sleeve 20 may be positioned so as to be flush with a lower floor surface 78 of the cast-in-place concrete floor 74. This flush arrangement of the sleeve 20 helps ensure that the anchor assembly 10 can be supported on any concrete formwork during concrete casting. Figures 10 and 11 illustrate two exemplary arrangement 72 embodiments. Figure 10 illustrates an example in which the studs 32 reinforce the cast-in-place concrete floor 74. Figure 11 illustrates an arrangement example that includes a composite metal deck 80 and a cast-in-place concrete floor 74. Further engagement between the anchor assembly 10 and the floor structure may be provided by a number of shear keys 82 attached to the lower sleeve portion 28 of the sleeve 20. The shear keys 82 project outwardly, away from the bore 22 of the sleeve 20, and engage the metal deck 80. The shear keys 82 help to properly position the sleeve 20 within the metal deck 80 during assembly and also help to maintain the position of the sleeve 20 during the concrete pour. The shear keys 82 may take the form of discrete tabs welded to the lower sleeve portion 28 of the sleeve 20.

[0025] In another embodiment shown in FIG. 12, the bracket 58 is attached directly to the riser pipe 84. In this exemplary installation 72, the anchor assembly 10 is again disposed in a poured-in-place floor 74, preferably concrete. The top surface 14 of the plate 12 is disposed so as to be flush with an upper floor surface 76 of the poured-in-place concrete floor 74. In addition, the sleeve bottom 30 of the sleeve 20 may be positioned so as to be flush with a lower floor surface 78 of the poured-in-place concrete floor 74. The bracket 58 is affixed directly to the riser pipe 84 for attaching the riser pipe 84 to the plate 12. The bracket 58 may again include a plurality of arms, in this embodiment a first arm 60 and a second arm 62 attached to the riser pipe 84 and projecting transversely thereto. The bracket 58 overlies the top surface 14 of the plate 12 and is attached to the plate 12 via a plurality of threaded fasteners 64 that engage a plurality of collars 36 in the manner previously described.

[0026] The anchor assembly 10 according to the present disclosure is expected to provide a design that directly supports the riser pipe at the slab penetration point, thus improving the local load-bearing capacity of both the concrete floor and the concrete composite metal deck. The assembly 10 is expected to significantly reduce the total number of fixed supports required compared to conventional riser systems, thereby reducing the number of "thermal anchor points" and allowing the riser to accommodate greater thermal expansion and contraction with lower stresses on the fixed supports.

[0027] The present disclosure can be more readily understood by reference to the following detailed description, examples, drawings, and claims, as well as their preceding and following descriptions.However, before the present device, system, and / or method are disclosed and described, it should be understood that the present invention is not limited to the specific device, system, and / or method disclosed, unless otherwise specified, and therefore may, of course, vary.It should also be understood that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to be limiting.

Claims

[Claim 1] The invention described in this specification.

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