CA2756963A1 - Plenum barrier system - Google Patents
Plenum barrier system Download PDFInfo
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- CA2756963A1 CA2756963A1 CA 2756963 CA2756963A CA2756963A1 CA 2756963 A1 CA2756963 A1 CA 2756963A1 CA 2756963 CA2756963 CA 2756963 CA 2756963 A CA2756963 A CA 2756963A CA 2756963 A1 CA2756963 A1 CA 2756963A1
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- acoustic barrier
- rail
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- 238000005192 partition Methods 0.000 description 2
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
- E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
Disclosed is an acoustic barrier system for use in a plenum space, such as but not limited to the space between a suspended ceiling system and the underside of the slab directly above the ceiling. The acoustic barrier system includes: a first two part plate or rail, e.g. for attachment to the underside of the slab; a second two part plate or rail, e.g.
that abuts a portion of the suspended ceiling system, wherein the first two part plate or rail is positioned substantially parallel to the second two part plate or rail; and at least one semi-rigid acoustic barrier panel that connects the two part plates or rails. Optionally the system comprises a fastener for connecting the first two part plate or rail to a portion of a suspended ceiling system. Also disclosed are methods of installing the acoustic barrier system and kits of the same. The acoustic barrier system provides improved noise reduction characteristics, can be retrofitted into an existing office space and can be reused when offices are reconfigured.
that abuts a portion of the suspended ceiling system, wherein the first two part plate or rail is positioned substantially parallel to the second two part plate or rail; and at least one semi-rigid acoustic barrier panel that connects the two part plates or rails. Optionally the system comprises a fastener for connecting the first two part plate or rail to a portion of a suspended ceiling system. Also disclosed are methods of installing the acoustic barrier system and kits of the same. The acoustic barrier system provides improved noise reduction characteristics, can be retrofitted into an existing office space and can be reused when offices are reconfigured.
Description
FIELD OF INVENTION
[0001] The present invention relates to acoustic barriers. In particular, the present invention relates to an acoustic bather system for use in a plenum.
BACKGROUND OF THE INVENTION
[0001] The present invention relates to acoustic barriers. In particular, the present invention relates to an acoustic bather system for use in a plenum.
BACKGROUND OF THE INVENTION
[0002] Most office buildings are designed with large open areas sectioned off by a series of floating walls. In order to maximize the usable space and to accommodate different office configurations, a majority of services, such as electricity, air supply ducts, network cables and plumbing, are installed above a suspended ceiling. The space between the suspended ceiling and the underside of the floor above is typically referred to as the plenum.
In order to more readily accommodate changes in office layout, walls are typically structured so that the top of the wall abuts, but does not pass through, the suspended ceiling. This type of design does present the problem that sound emitted from one office space can travel over the wall, through the plenum, and be heard by the occupant(s) of the adjacent offices. In environments where confidentiality or security are a top priority, such sound transmission in the workplace can pose a serious problem.
In order to more readily accommodate changes in office layout, walls are typically structured so that the top of the wall abuts, but does not pass through, the suspended ceiling. This type of design does present the problem that sound emitted from one office space can travel over the wall, through the plenum, and be heard by the occupant(s) of the adjacent offices. In environments where confidentiality or security are a top priority, such sound transmission in the workplace can pose a serious problem.
[0003] Currently there are solutions to this problem, however, the solutions are either expensive, sacrifice the modularity of the office design, and/or are less than ideal for blocking sound transmission.
[0004] One way the problem of sound transmission through the plenum has been addressed is by extending the office walls through the plenum and attaching the top plate of the wall to the underside of the floor above, This type of design requires that the suspended ceiling is attached to the inside walls of the office, which means that any reconfiguration of the office space is labour intensive and, therefore, costly. Moreover, having solid walls in the plenum space makes the routing and maintenance of services run through the plenum more difficult.
[0005] Another solution to this problem has been to place acoustic barriers in the plenum surrounding the perimeter of the office space. In these applications, a fabric or lead sheet type of acoustic barrier is suspended from a plate attached to the underside of the floor above and draped over the plenum-facing surface of the suspended ceiling. Although this type of system does allow for movable walls to be constructed and installed easily, the sheet or fabric material does not have adequate acoustical barrier properties. In addition, slight gaps can be created between the barrier and the grid system of the suspended ceiling that extends beyond the plenum-facing surface of the ceiling tiles. Even though these gaps may be small, they do allow for a certain amount of sound to escape the office space and flow to the adjacent offices and/or common space.
[0006] Halliwell and Quirt (J. Acoust. Soc. Am. 90(3), 1991) studied the problem of controlling interoffice sound transmission through a suspended ceiling, Their conclusion was that the most simple and economical technique to improve the noise reduction between adjacent offices was to place a stack of absorptive bans, i.e. glass fiber thermal insulation batts, around the perimeter of each office space. Although this method would be economical feasible and could be moved during an office reconfiguration, the potential health risks posed by glass fiber in and around the ventilation system of the office building causes some concerns, Moreover, gaps will exist in the barrier to accommodate the services routed through the plenum.
[0007] A further solution to this problem is to construct a partition like structure in the plenum, consisting of a top and bottom rail, (and sometimes rigid vertical members), with drywall or other rigid panels to be attached to either side of the support members. The interior of the partition, (between the rigid panels,) may or may not be filled with absorptive batts.
The disadvantage of these types of construction is that sound is transmitted by the rigid top, bottom and vertical members, which typically consist of one piece steel channels or studs, This problem may be overcome by building separate vertical walls spaced apart so that each side of the barrier has separate, non-connecting supporting members. The disadvantage of .
this construction is the high cost of materials, and the cost and time of labour to construct what are essentially two walls or barriers separated by a non-sound transmitting space.
-2.
The disadvantage of these types of construction is that sound is transmitted by the rigid top, bottom and vertical members, which typically consist of one piece steel channels or studs, This problem may be overcome by building separate vertical walls spaced apart so that each side of the barrier has separate, non-connecting supporting members. The disadvantage of .
this construction is the high cost of materials, and the cost and time of labour to construct what are essentially two walls or barriers separated by a non-sound transmitting space.
-2.
[0008] Based on the preceding discussion, there is a need for a reusable, cost effective, and environmentally-friendly way to reduce sound transmission through a plenum.
SUMMARY OF THE INVENTION
SUMMARY OF THE INVENTION
[0009] It is an object of the invention to provide an improved acoustic barrier system that addresses at least some of the limitations of the systems described above.
(0010] According to an aspect of the present invention there is provided an acoustic barrier system for use in a plenum space, for example but not limited to the space defined between a suspended ceiling system and the underside of the slab or other structure directly above the ceiling. The acoustic barrier system comprises a two-part plate or rail for attachment to a first surface of the plenum, for example the underside of the slab (e,g, a top plate or rail); a two-part second plate or rail for attachment to a second surface of the plenum, for example a portion of a suspended ceiling system (e,g, a bottom plate or rail), wherein the second two-part plate or rail is parallel to the first two-part plate or rail. In certain non-limiting embodiments, the bottom plate is positioned in same the vertical plane as the top plate. In addition, at least one semi-rigid acoustic bather panel is provided that connects the top and bottom plates. Also, optionally, a fastener may be provided for connecting a bottom plate to a portion of a suspended ceiling system.
[0011] Instead of or in addition to using fasteners, it is also envisioned that adhesives or other fastening means, e.g. acoustic caulldng, may be used to secure the two-part plates OT rails in position.
[0012] In one embodiment, the two-part plates or rails include two rigid support structures interspaced from one another by a plurality of low sound transmitting spacers.
Preferably, the plurality of spacers are rigid foam blocks. The rigid foam blocks can be made from extruded polystyrene or polyisocyanate. Alternatively, open or closed cell foam board with or without fire retardant additives may be used, such as but not limited to EthafoamTM, Thermax114 or 131astizoteTm.
(00133 In an another embodiment, at least one semi-rigid acoustic barrier panel is used to connect a longitudinal side of the top plate to the corresponding longitudinal side of the bottom plate and a corresponding number of semi-rigid acoustic barrier panels are used to connect the opposite longitudinal side of the top plate to the corresponding longitudinal side of the bottom plate.
[0014] In a further embodiment, a cavity is formed between the at least one semi-rigid acoustic barrier panel and the corresponding number of semi-rigid acoustic barrier panels.
The cavity can be filled with a sound dampening material.
[0015] In a yet further embodiment, the semi-rigid acoustic barrier panels are polyester fiber boards. The polyester fiber boards can further include a foil scrim kraft facing.
[0016) In another embodiment, the semi-rigid acoustic battier panels are made from stone wool insulation with multi-directional fiber orientation.
[0017) In an embodiment, the semi-rigid acoustic barrier panels are cut to accommodate portions of the grid system of the suspended ceiling system.
[0018] In accordance with another aspect of the present invention there is provided a method of installing the acoustic barrier system in a plenum defined by the space between a suspended ceiling system and the underside of the slab directly above the ceiling. The method comprises the steps of positioning the first two-part plate or rail on first surface of the plenum space, such as but not limited to a portion of the suspended ceiling system;
attaching the second two-part plate or rail to a second plenum surface, such as but not limited to the underside of the slab, and with the two-part plates and rails substantially parallel to each other. In certain embodiments, the two-part plates and rails may be positioned in the same vertical plane. The method may also comprise connecting e.g. the one of the two-part plates or rails to a portion of a suspended ceiling system, e.g. by a fastener or other non-limiting means such as adhesive caulking; and attaching at least one semi-rigid acoustic barrier panel to the top and bottom plates.
[0019] While the above described acoustic barrier system is well suited for a horizontal rail system, where one of the two-part plates or rails is positioned on or connected to a portion of the suspended ceiling system, e.g. as a base rail/plate, and the other two-part plate or rail is positioned adjacent to or connected to the underside of the slab, e.g. as a top rail/plate, it is to be understood that the two-part rails or plates can also be oriented so that they run vertically along vertical surfaces of the plenum space. Both of these orientations can be accomplished with a friction fit, or through the use of connectors or adhesives. Acoustic caulking is envisioned as an adhesive that would work well in many embodiments, although other connectors and adhesives will be known to those of skill in the art.
[0020] In an embodiment of the present invention, at least one semi-rigid acoustic barrier panel is connected a longitudinal side of the first two-part plate or rail and to the corresponding longitudinal side of the second two-part plate or rail and a corresponding number of semi-rigid acoustic barrier panels are connected to the opposite longitudinal side of the first two-part plate or rail and the corresponding longitudinal side of the second two-part plate or rail.
[0021] In another embodiment, the method further includes filling a cavity formed between the at least one semi-rigid acoustic barrier panel and the corresponding number of semi-rigid acoustic bather panels with a sound dampening material.
[0022) In a further embodiment, the method further comprises the step of cutting (e.g. slitting or notching) the semi-rigid acoustic barrier panels to accommodate portions of the grid system of the suspended ceiling system prior to attaching the semi-rigid acoustic barrier panel to the first and second two-part plates or rails, e.g. top and bottom plates/rails.
[0023] According to another aspect of the present invention, there is provided use of the acoustic barrier system described above for limiting sound transmission through a plenum, [0024] According to a further aspect of the present invention, there is provided a kit for limiting sound transmission through a plenum space, e.g. the space between a suspended ceiling system and the underside of the slab directly above the ceiling. The kit comprises a first two-part plate or rail for attachment to a first plenum surface, e.g.
the underside of the slab; a second two-part plate or rail for attachment to a second plenum surface, e.g. that abuts a portion of a suspended ceiling system; at least one semi-rigid acoustic barrier panel that connects the first and second plates or rails; optionally a fastener for connecting the second two-part plate or rail to a portion of a suspended ceiling system; and instructions for use.
[0025] According to a yet further aspect of the present invention, there is provided a fastener for linking an element in a plenum to a main beam in a suspended ceiling system. The fastener comprises a plate dimensioned to engage the element in the plenum;
and a passage for accommodating passage of a spline connected to the main beam in the suspended ceiling system.
[0026] In an embodiment of the present invention, the fastener further comprises a convex area extending from the plate and surrounding the passage so that the edges of the passage frictionally engage the spline to hold the spline in place.
[0027] In another embodiment, the plate further comprises reliefs on either side of the passage to facilitate the passage of the spline.
[0028] In a farther embodiment, the sides of the plate that engage a plate or rail, e.g. the two-part plate or rail described above, are arched towards the center of the plate.
[0029] In a yet further embodiment, the passage is a slot, [0030] According to another aspect of the present invention, there is provided use of a fastener as described above in installing an acoustic barrier system in a plenum.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings wherein;
FIG, 1 shows an acoustic barrier system in accordance with an embodiment of the present invention;
-6.
FIG. 2 shows a top plate in accordance with a farther embodiment of the present invention;
FIG. 3 shows a bottom plate in accordance with a further embodiment of the present invention;
FIG, 4 shows an acoustic barrier system in accordance with a further embodiment of the present invention;
FIG. 5 shows a fastener in accordance with an embodiment of the present invention; and FIG. 6 shows a fastener in accordance with a further embodiment of the present invention.
DETAILED DESCRIPTION
[0032] The acoustic barrier system described herein is preferably used in the plenum resulting from the installation of a suspended ceiling system in an open building space.
The plenum is the space between the suspended ceiling system and the underside of the slab directly above the suspended Gelling system. This plenum space typically houses a majority of services, such as electricity, air supply ducts, network cables and plumbing.
[0033] Typical suspended ceiling systems include a grid system and a plurality of ceiling tiles.
The grid system typically includes hangars that are positioned around the perimeter of the space having the ceiling. Math. beams are positioned parallel to one another and run from one hangar to another hangar directly opposite the first hangar. In some cases, the main beams are also referred to as T-bars or runners. Cross-tees are connected perpendicular to adjacent main beams. The ceiling tiles are supported the grid system formed by the main beams and cross-tees.
[0034] As shown in the non-limiting example of FIG, 1, the acoustic barrier system (1) described herein is positioned in the plenum. The acoustic barrier system (1) includes a top plate (2) which is attached to the underside of the slab (16). For the purposes of the present description, the term slab includes a concrete slab that forms the floor of the floor directly above, or the roof, if the plenum exists on the highest floor of the building.
Furthermore, the term slab can include structures attached to the underside of the slab, in which the top plate can be attached.
[0035] The acoustic barrier system (1) also includes a bottom plate (3) which is initially placed on the grid system of the suspended ceiling system (10). Preferably, the bottom plate (3) is positioned over and parallel to a main beam (12) of the grid system.
However, positioning the bottom plate (3) over and parallel to a cross-tee (11) may be necessary in some applications, In any case, the bottom plate (3) should be positioned substantially in the same vertical plane as the top (2). In other words, the edges of the top (2) and bottom (3) plates to which the acoustic barrier panel (4) is attached, should be in the same vertical plane to ensure a tight seal between the plates (2, 3) and the acoustic barrier panel (4).
[0036] The acoustic barrier system (1) also includes an optional fastener for connecting the bottom plate (3) to a portion of the suspended ceiling system (10).
[0037] The top plate (2) of the acoustic barrier system (1) can be attached to the slab (16) using any number of different ways, of which many would be apparent to a person skilled in the art. For example, the top plate (2) may be glued to the slab (16) or masonry fasteners, such as screws, may be used to attach the top plate (2) to the slab (16). In the event the slab (16) includes one or more structures attached thereto, another method of attaching the top plate (2) to the slab (16) may be necessary. Once again, appropriate fasteners for this purpose would be known to a person skilled in the art. In addition, it is envisioned that the use of a friction fit instead of or in combination with certain means of fastening can be used, [0038] Both the top (2) and bottom (3) plates can be constructed in a similar manner, For example, two rigid support members (20) may be provided in the plates (2, 3) and separated from one another by a spacer (21) (as shown in FIG. 1). Wooden or metal wall studs may also be used as the top (2) and (3) bottom plates. However, the fire rating and sound dampening properties of these materials may be less preferred, then the solid support member and spacer construction, (00393 In one embodiment, the rigid support members (20) are L-shaped (or angled) tracks that are separated by a plurality of spacers (21). Although it is feasible for the two plates (2, 3) to have identical construction, it is preferred that the rigid support members (20) of the top plate (2) have the L-shaped tracks extending away from one another, as shown in FIG. 2. This configuration allows for the top plate (2) to be more easily fastened to the slab (16).
Conversely, it is preferred that the rigid support members (20) of the bottom plate (3) have the L-shaped tracks facing inward, in order to support the spacers (21) (see FIG.
3) and to assist in connecting the bottom plate to the grid system. The L-shaped tracks can be made of any type of solid material, preferably metal such as but not limited to aluminum or steel, or alternatively a composite material. In certain non-limiting embodiments, a galvanized metal may be preferred.
10040] The spacers (21) described herein can be made of any material that is capable of providing enough structural support to keep the rigid support members (20) apart, even under conditions when the acoustic barrier panels are being fastened to the top (2) and bottom (3) plates. However, it is preferred that the spacers (21) be made of a material, such as rigid foam, that can absorb or dampen sound transmission. Both extruded polystyrene and polyisocyanate are suitable rigid foams for this purpose. In order to provide sufficient structural support and to improve sound absorption, the rigid foam may be provided as blocks.
A further example of a suitable spacer material would be high-density foam backed up a rigid or semi-rigid support material, such as aluminum.
(0041] The number of spacers (21) provided in the top (2) and bottom (3) plates will depend mostly on the overall length of the plates (2, 3). At a minimum, a spacer (21) should be provided at each end of the plates (2, 3) and one optionally in the middle of the plates (2, 3).
In some applications, it may be advantageous to pack the top plate (2) with spacers (21) to provide greater structural support. However, as shown in FIG.3, gaps between spacers (21) are desired in the top and bottom plates (3), since this will reduce the acoustical transmission of the system and allow for passage of a spline (15) attached to the main beam (12) through the bottom plate (3). This aspect of the invention will be discussed in further detail below.
[0042] Acoustic barrier panels (4) are attached to the top (2) and bottom (3) plates to eliminate, or at least minimize, sound transmission through the plenum.
Preferably, the acoustic barrier panels (4) are attached to the top (2) and bottom (3) plates through the rigid support members (20) (FIG. I). Attachment of the acoustic barrier panels (4) to the plates (2, 3) can be accomplished through standard means, such as gluing and the use of standard fasteners. In any event, it is preferred that the method of attachment selected does not transmit sound through the system (1). As such, glue is preferred to attach the panels (4) to the plates (2, 3).
[0043] In order to reduce the amount of sound that is transmitted through the plenum, it is preferred that the acoustic barrier panels (4) extend from the underside of the slab (16) to the ceiling tiles (14). In other words, the one edge of the acoustic barrier panel (4) will abut, or nearly abut, the underside of the slab (16) and the opposite edge will abut, or nearly abut, the ceiling tile (14). The lesser the gap between the slab (16) and the acoustic barrier panel (4), and the acoustic barrier panel (4) and the ceiling tile (14), the greater the noise reduction properties of the overall system (1).
[0044] As shown in FIG. 4, the acoustic barrier panel (4) will have to accommodate the cross-tees (II) or, in some cases, the main beam (12), in order to fit snugly against the ceiling tiles (14). In order to accommodate these elements of the grid system, cuts (not shown) are cut into the acoustic barrier panels (4) and the panels (4) slid over and around the cross-tees (11) and main beam (12). Since the spacing of the cross-tees (11) in connection with the main beam (12) are for the most part standard, either two foot or four foot spacing, the cuts could be provided on the acoustic barrier panels (4) at the factory. Alternatively, the panels (4) could be shipped without the cuts, and the installer cuts the cuts on site, [0045] The material used for the acoustic barrier panels (4) should be capable of absorbing or deflecting sound. However, to avoid an echo in the room in which the sound originates, it is preferred that the panels absorb sound instead of deflecting it. In order to facilitate the installation of the acoustic barrier system (1), it is preferred that the acoustic barrier panels (4) be made out of a semi-rigid material. For the purposes of this description, semi-rigid means that the panels have a certain amount of flexibility, but are not as flexible as the curtains currently used for this purpose. Moreover, the panels (4) should not be rigid, as this will increase the chances of the integrity of the panels being compromised during delivery and installation.
[0046] Polyester fiber board, such as that sold under the trade name Ezobord , is a preferred material for use as an acoustic barrier panel (4). This material is semi-rigid and has memory, which is preferred, since this property will allow the slits/notches cut in the material to form tightly around the elements of the grid system. Moreover, this material is made from 42%
recycled material, which along with the fact that the acoustic barrier system described herein is completely reusable when an office space is reconfigured, decreases the overall environmental impact of the system. Furthermore, polyester fiber board has excellent sound absorbing properties, as well is of lightweight, water-resistant, impact-resistant, bacteria-, resistant, fire-resistant and formaldehyde free.
[0047] In one embodiment, the polyester fiber board described above is backed with a foil scrim kraft facing. Including a foil scrim 'craft facing on the acoustic barrier panel (4) improves the overall ability of the panel to absorb sound and improves the fire rating of the overall system.
[0048] Another preferred material for the construction of the acoustic barrier panels (4) is stone wool insulation with multi-directional fiber orientation, such as that sold under the trade name Rockboard .
[0049] During installation, it is preferred that both of the longitudinal edges of the top and bottom plates (2, 3), i.e. the sides to the top and bottom plates that are not pressed up against the slab or suspended ceiling system or the opposites sides thereof, have acoustic barrier panels (4) attached to them (see FIG. 4). However, in some cases, sufficient noise reduction can be achieved by attaching the acoustic barrier panels (4) to one of the longitudinal edges of the top (2) and bottom (3) plates (see FIG. 1). In either case, the whole perimeter of the area in which the transmission of sound therefrom is not desired should be covered with acoustic barrier panels (4).
[0050] In the preferred embodiment, where acoustic barrier panels (4) are attached to both longitudinal edges of the top (2) and bottom (3) plates, a cavity (6) will be formed between the panels (4). To further limit the transmission of sound across the acoustic barrier system (1), this cavity (6) may be filled with a sound dampening material, such as foam or insulation.
[0051] As mentioned above, the bottom plate (3) is connected to a portion of the suspended ceiling system (10) by a fastener. Although some applications may permit the use of standard fasteners, such as hexagonal nuts, it is preferred that the fastener (5) shown in FIG. 5 be used with the acoustic barrier system (1) described herein. The fastener (5) shown in FIG. 5 includes a plastic or lightweight metal plate (30). Preferably the dimensions of the plate (30) correspond to the inside dimension between the two solid support members (20), in order to minimize lateral movement of the plate (30) within the bottom plate (3). The plate (30) having a passage (31) disposed therethrough. The passage (31) allows for a spline (15) attached to the grid system of the suspended ceiling system (10), or a spline formed as part of the grid system, to pass through the fastener (5). For the purposes of this description, the term spline means any element attached to the grid system of the suspended ceiling system or formed as a part of the grid system that can be inserted through the passage (31) in the fastener (5) and used to connect the bottom plate (4) to the grid system. In other words, hooks, catches, spring-loaded tensioners are all considered splines for the purpose of this description, [0052] In the case where the spline is a threaded bolt, the fastener (5), along with hexagonal nut corresponding to the threaded bolt, may be used to compress the bottom plate (4) against the grid system of the suspended ceiling (10). However, it is preferred that the dimensions of the passage (31) be made slightly smaller than the width of the spline (15), so that the spline (15) is held in place in the passage (31) by friction. In order to make the fastener (5) easier to work with during installation of the system (1), the plate (30) is designed to have a convex area (32) surrounding the passage (31) (see FIG. 6). This convex area (32) will provide greater flexibility for the passage (31) to spread apart while the spline (15) is being inserted therethrough, yet will provided sufficient rigidity to frictionally engage with the spline (15) to prevent lateral and vertical movement of the fastener (5) in relation to the spline (15).
[0053] In an effort to provide greater usability with the fastener (5), including the ability to accommodate a larger number of splines (15) with different dimensions, reliefs (33) can be provided at either end of the passage (31) (see FIG, 5). These reliefs (33) also allow for the convex area (32) to be formed on the plate (30).
[0054] The dimensions of the passage (31) can be customized depending on the type of spline (15) being used. However, in most cases the spline (15) will have a rectangular tab shape, similar to that shown in the drawings. In this case, the passage (31) can be provided as a slot, as shown in PIG. 5.
[0055] Although the edges of the plate (30) that engage the bottom plate (4) can have any shape, so long as it sufficiently overlaps the bottom plate (4) to hold it in place, it is preferred that these edges are arch-shaped as shown in FIGS. 5 and 6. This shape allows for slight adjustment to the positioning the fastener (5) in relation to the bottom plate (4) during installation, [0056] The fastener (5) described herein is preferably used with the acoustic barrier system (1). However, it can also be used to attach other elements to the suspended ceiling system (10). For example, wires and networking cables may forced against the grid system of the suspended ceiling system to prevent them from coming into contact with other meclumical systems in the plenum. Moreover, the fasteners could be used, alone or in conjunction with other devices, to put pressure against a ceiling tile to prevent it from raising up from the grid system.
[0057] The nature of the acoustic barrier system (1) described herein, allows for relatively easy installation without much disruption to the workplace. The system (1) is typically installed by positioning the bottom plate (3) on a portion of the grid system of the suspended ceiling system (10). Preferably, the bottom plate (3) is aligned with either the main beam (12) or a series of cross-tees (11) of the grid system. The top plate (2) is aligned with the bottom plate (4) and is attached to the slab (16) in a vertical plane with the bottom plate (3).
Although it is desirable to install the bottom plate (3) prior to the top plate (2), the top plate (2) could be installed first and the bottom plate (3) aligned in a vertical plane therewith.
[0058] Once the top (2) and bottom (3) plates are aligned, the bottom plate (3) can be fastened to the grid system of the suspended ceiling system (10) by using a fastener (5) as described above.
[0059] The acoustic barrier panels (4) are then installed to the top (2) and bottom (3) plates, In the case where acoustic barrier panels (4) are placed on either side of the top (2) and bottom (3) plates, a sound dampening material may be added to the cavity (6) created by the panels (4), prior to the second acoustic barrier panel (4) being attached to the top (2) and bottom (3) plates, [0060] If portions of the grid system of the suspended ceiling system (10) are in the way of an acoustic bather panel (4) being attached to the bottom plate (3), then slits/notches should be cut in the panels (4) to accommodate those portions of the gild.
[0061] It is contemplated that the individual components of the acoustic barrier system (1) described herein may be sold individually or as part of a kit, In this case, the kit would include a top plate (2), a bottom plate (3), at least one acoustic barrier panel (4), one or more fasteners (5) for attaching the bottom plate (3) to the grid system of the suspended ceiling system (10) and a set of instructions for use thereof. Each of these components could have the features described above, The kit might also include splines (15) to attach to the grid system.
As well, sound dampening material for placement between the two acoustic barrier panels may also be included in the kit.
[0061] One or more currently preferred embodiments have been described by way of example.
It will be apparent to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as defined in the claims.
Preferably, the plurality of spacers are rigid foam blocks. The rigid foam blocks can be made from extruded polystyrene or polyisocyanate. Alternatively, open or closed cell foam board with or without fire retardant additives may be used, such as but not limited to EthafoamTM, Thermax114 or 131astizoteTm.
(00133 In an another embodiment, at least one semi-rigid acoustic barrier panel is used to connect a longitudinal side of the top plate to the corresponding longitudinal side of the bottom plate and a corresponding number of semi-rigid acoustic barrier panels are used to connect the opposite longitudinal side of the top plate to the corresponding longitudinal side of the bottom plate.
[0014] In a further embodiment, a cavity is formed between the at least one semi-rigid acoustic barrier panel and the corresponding number of semi-rigid acoustic barrier panels.
The cavity can be filled with a sound dampening material.
[0015] In a yet further embodiment, the semi-rigid acoustic barrier panels are polyester fiber boards. The polyester fiber boards can further include a foil scrim kraft facing.
[0016) In another embodiment, the semi-rigid acoustic battier panels are made from stone wool insulation with multi-directional fiber orientation.
[0017) In an embodiment, the semi-rigid acoustic barrier panels are cut to accommodate portions of the grid system of the suspended ceiling system.
[0018] In accordance with another aspect of the present invention there is provided a method of installing the acoustic barrier system in a plenum defined by the space between a suspended ceiling system and the underside of the slab directly above the ceiling. The method comprises the steps of positioning the first two-part plate or rail on first surface of the plenum space, such as but not limited to a portion of the suspended ceiling system;
attaching the second two-part plate or rail to a second plenum surface, such as but not limited to the underside of the slab, and with the two-part plates and rails substantially parallel to each other. In certain embodiments, the two-part plates and rails may be positioned in the same vertical plane. The method may also comprise connecting e.g. the one of the two-part plates or rails to a portion of a suspended ceiling system, e.g. by a fastener or other non-limiting means such as adhesive caulking; and attaching at least one semi-rigid acoustic barrier panel to the top and bottom plates.
[0019] While the above described acoustic barrier system is well suited for a horizontal rail system, where one of the two-part plates or rails is positioned on or connected to a portion of the suspended ceiling system, e.g. as a base rail/plate, and the other two-part plate or rail is positioned adjacent to or connected to the underside of the slab, e.g. as a top rail/plate, it is to be understood that the two-part rails or plates can also be oriented so that they run vertically along vertical surfaces of the plenum space. Both of these orientations can be accomplished with a friction fit, or through the use of connectors or adhesives. Acoustic caulking is envisioned as an adhesive that would work well in many embodiments, although other connectors and adhesives will be known to those of skill in the art.
[0020] In an embodiment of the present invention, at least one semi-rigid acoustic barrier panel is connected a longitudinal side of the first two-part plate or rail and to the corresponding longitudinal side of the second two-part plate or rail and a corresponding number of semi-rigid acoustic barrier panels are connected to the opposite longitudinal side of the first two-part plate or rail and the corresponding longitudinal side of the second two-part plate or rail.
[0021] In another embodiment, the method further includes filling a cavity formed between the at least one semi-rigid acoustic barrier panel and the corresponding number of semi-rigid acoustic bather panels with a sound dampening material.
[0022) In a further embodiment, the method further comprises the step of cutting (e.g. slitting or notching) the semi-rigid acoustic barrier panels to accommodate portions of the grid system of the suspended ceiling system prior to attaching the semi-rigid acoustic barrier panel to the first and second two-part plates or rails, e.g. top and bottom plates/rails.
[0023] According to another aspect of the present invention, there is provided use of the acoustic barrier system described above for limiting sound transmission through a plenum, [0024] According to a further aspect of the present invention, there is provided a kit for limiting sound transmission through a plenum space, e.g. the space between a suspended ceiling system and the underside of the slab directly above the ceiling. The kit comprises a first two-part plate or rail for attachment to a first plenum surface, e.g.
the underside of the slab; a second two-part plate or rail for attachment to a second plenum surface, e.g. that abuts a portion of a suspended ceiling system; at least one semi-rigid acoustic barrier panel that connects the first and second plates or rails; optionally a fastener for connecting the second two-part plate or rail to a portion of a suspended ceiling system; and instructions for use.
[0025] According to a yet further aspect of the present invention, there is provided a fastener for linking an element in a plenum to a main beam in a suspended ceiling system. The fastener comprises a plate dimensioned to engage the element in the plenum;
and a passage for accommodating passage of a spline connected to the main beam in the suspended ceiling system.
[0026] In an embodiment of the present invention, the fastener further comprises a convex area extending from the plate and surrounding the passage so that the edges of the passage frictionally engage the spline to hold the spline in place.
[0027] In another embodiment, the plate further comprises reliefs on either side of the passage to facilitate the passage of the spline.
[0028] In a farther embodiment, the sides of the plate that engage a plate or rail, e.g. the two-part plate or rail described above, are arched towards the center of the plate.
[0029] In a yet further embodiment, the passage is a slot, [0030] According to another aspect of the present invention, there is provided use of a fastener as described above in installing an acoustic barrier system in a plenum.
BRIEF DESCRIPTION OF THE DRAWINGS
[0031] These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings wherein;
FIG, 1 shows an acoustic barrier system in accordance with an embodiment of the present invention;
-6.
FIG. 2 shows a top plate in accordance with a farther embodiment of the present invention;
FIG. 3 shows a bottom plate in accordance with a further embodiment of the present invention;
FIG, 4 shows an acoustic barrier system in accordance with a further embodiment of the present invention;
FIG. 5 shows a fastener in accordance with an embodiment of the present invention; and FIG. 6 shows a fastener in accordance with a further embodiment of the present invention.
DETAILED DESCRIPTION
[0032] The acoustic barrier system described herein is preferably used in the plenum resulting from the installation of a suspended ceiling system in an open building space.
The plenum is the space between the suspended ceiling system and the underside of the slab directly above the suspended Gelling system. This plenum space typically houses a majority of services, such as electricity, air supply ducts, network cables and plumbing.
[0033] Typical suspended ceiling systems include a grid system and a plurality of ceiling tiles.
The grid system typically includes hangars that are positioned around the perimeter of the space having the ceiling. Math. beams are positioned parallel to one another and run from one hangar to another hangar directly opposite the first hangar. In some cases, the main beams are also referred to as T-bars or runners. Cross-tees are connected perpendicular to adjacent main beams. The ceiling tiles are supported the grid system formed by the main beams and cross-tees.
[0034] As shown in the non-limiting example of FIG, 1, the acoustic barrier system (1) described herein is positioned in the plenum. The acoustic barrier system (1) includes a top plate (2) which is attached to the underside of the slab (16). For the purposes of the present description, the term slab includes a concrete slab that forms the floor of the floor directly above, or the roof, if the plenum exists on the highest floor of the building.
Furthermore, the term slab can include structures attached to the underside of the slab, in which the top plate can be attached.
[0035] The acoustic barrier system (1) also includes a bottom plate (3) which is initially placed on the grid system of the suspended ceiling system (10). Preferably, the bottom plate (3) is positioned over and parallel to a main beam (12) of the grid system.
However, positioning the bottom plate (3) over and parallel to a cross-tee (11) may be necessary in some applications, In any case, the bottom plate (3) should be positioned substantially in the same vertical plane as the top (2). In other words, the edges of the top (2) and bottom (3) plates to which the acoustic barrier panel (4) is attached, should be in the same vertical plane to ensure a tight seal between the plates (2, 3) and the acoustic barrier panel (4).
[0036] The acoustic barrier system (1) also includes an optional fastener for connecting the bottom plate (3) to a portion of the suspended ceiling system (10).
[0037] The top plate (2) of the acoustic barrier system (1) can be attached to the slab (16) using any number of different ways, of which many would be apparent to a person skilled in the art. For example, the top plate (2) may be glued to the slab (16) or masonry fasteners, such as screws, may be used to attach the top plate (2) to the slab (16). In the event the slab (16) includes one or more structures attached thereto, another method of attaching the top plate (2) to the slab (16) may be necessary. Once again, appropriate fasteners for this purpose would be known to a person skilled in the art. In addition, it is envisioned that the use of a friction fit instead of or in combination with certain means of fastening can be used, [0038] Both the top (2) and bottom (3) plates can be constructed in a similar manner, For example, two rigid support members (20) may be provided in the plates (2, 3) and separated from one another by a spacer (21) (as shown in FIG. 1). Wooden or metal wall studs may also be used as the top (2) and (3) bottom plates. However, the fire rating and sound dampening properties of these materials may be less preferred, then the solid support member and spacer construction, (00393 In one embodiment, the rigid support members (20) are L-shaped (or angled) tracks that are separated by a plurality of spacers (21). Although it is feasible for the two plates (2, 3) to have identical construction, it is preferred that the rigid support members (20) of the top plate (2) have the L-shaped tracks extending away from one another, as shown in FIG. 2. This configuration allows for the top plate (2) to be more easily fastened to the slab (16).
Conversely, it is preferred that the rigid support members (20) of the bottom plate (3) have the L-shaped tracks facing inward, in order to support the spacers (21) (see FIG.
3) and to assist in connecting the bottom plate to the grid system. The L-shaped tracks can be made of any type of solid material, preferably metal such as but not limited to aluminum or steel, or alternatively a composite material. In certain non-limiting embodiments, a galvanized metal may be preferred.
10040] The spacers (21) described herein can be made of any material that is capable of providing enough structural support to keep the rigid support members (20) apart, even under conditions when the acoustic barrier panels are being fastened to the top (2) and bottom (3) plates. However, it is preferred that the spacers (21) be made of a material, such as rigid foam, that can absorb or dampen sound transmission. Both extruded polystyrene and polyisocyanate are suitable rigid foams for this purpose. In order to provide sufficient structural support and to improve sound absorption, the rigid foam may be provided as blocks.
A further example of a suitable spacer material would be high-density foam backed up a rigid or semi-rigid support material, such as aluminum.
(0041] The number of spacers (21) provided in the top (2) and bottom (3) plates will depend mostly on the overall length of the plates (2, 3). At a minimum, a spacer (21) should be provided at each end of the plates (2, 3) and one optionally in the middle of the plates (2, 3).
In some applications, it may be advantageous to pack the top plate (2) with spacers (21) to provide greater structural support. However, as shown in FIG.3, gaps between spacers (21) are desired in the top and bottom plates (3), since this will reduce the acoustical transmission of the system and allow for passage of a spline (15) attached to the main beam (12) through the bottom plate (3). This aspect of the invention will be discussed in further detail below.
[0042] Acoustic barrier panels (4) are attached to the top (2) and bottom (3) plates to eliminate, or at least minimize, sound transmission through the plenum.
Preferably, the acoustic barrier panels (4) are attached to the top (2) and bottom (3) plates through the rigid support members (20) (FIG. I). Attachment of the acoustic barrier panels (4) to the plates (2, 3) can be accomplished through standard means, such as gluing and the use of standard fasteners. In any event, it is preferred that the method of attachment selected does not transmit sound through the system (1). As such, glue is preferred to attach the panels (4) to the plates (2, 3).
[0043] In order to reduce the amount of sound that is transmitted through the plenum, it is preferred that the acoustic barrier panels (4) extend from the underside of the slab (16) to the ceiling tiles (14). In other words, the one edge of the acoustic barrier panel (4) will abut, or nearly abut, the underside of the slab (16) and the opposite edge will abut, or nearly abut, the ceiling tile (14). The lesser the gap between the slab (16) and the acoustic barrier panel (4), and the acoustic barrier panel (4) and the ceiling tile (14), the greater the noise reduction properties of the overall system (1).
[0044] As shown in FIG. 4, the acoustic barrier panel (4) will have to accommodate the cross-tees (II) or, in some cases, the main beam (12), in order to fit snugly against the ceiling tiles (14). In order to accommodate these elements of the grid system, cuts (not shown) are cut into the acoustic barrier panels (4) and the panels (4) slid over and around the cross-tees (11) and main beam (12). Since the spacing of the cross-tees (11) in connection with the main beam (12) are for the most part standard, either two foot or four foot spacing, the cuts could be provided on the acoustic barrier panels (4) at the factory. Alternatively, the panels (4) could be shipped without the cuts, and the installer cuts the cuts on site, [0045] The material used for the acoustic barrier panels (4) should be capable of absorbing or deflecting sound. However, to avoid an echo in the room in which the sound originates, it is preferred that the panels absorb sound instead of deflecting it. In order to facilitate the installation of the acoustic barrier system (1), it is preferred that the acoustic barrier panels (4) be made out of a semi-rigid material. For the purposes of this description, semi-rigid means that the panels have a certain amount of flexibility, but are not as flexible as the curtains currently used for this purpose. Moreover, the panels (4) should not be rigid, as this will increase the chances of the integrity of the panels being compromised during delivery and installation.
[0046] Polyester fiber board, such as that sold under the trade name Ezobord , is a preferred material for use as an acoustic barrier panel (4). This material is semi-rigid and has memory, which is preferred, since this property will allow the slits/notches cut in the material to form tightly around the elements of the grid system. Moreover, this material is made from 42%
recycled material, which along with the fact that the acoustic barrier system described herein is completely reusable when an office space is reconfigured, decreases the overall environmental impact of the system. Furthermore, polyester fiber board has excellent sound absorbing properties, as well is of lightweight, water-resistant, impact-resistant, bacteria-, resistant, fire-resistant and formaldehyde free.
[0047] In one embodiment, the polyester fiber board described above is backed with a foil scrim kraft facing. Including a foil scrim 'craft facing on the acoustic barrier panel (4) improves the overall ability of the panel to absorb sound and improves the fire rating of the overall system.
[0048] Another preferred material for the construction of the acoustic barrier panels (4) is stone wool insulation with multi-directional fiber orientation, such as that sold under the trade name Rockboard .
[0049] During installation, it is preferred that both of the longitudinal edges of the top and bottom plates (2, 3), i.e. the sides to the top and bottom plates that are not pressed up against the slab or suspended ceiling system or the opposites sides thereof, have acoustic barrier panels (4) attached to them (see FIG. 4). However, in some cases, sufficient noise reduction can be achieved by attaching the acoustic barrier panels (4) to one of the longitudinal edges of the top (2) and bottom (3) plates (see FIG. 1). In either case, the whole perimeter of the area in which the transmission of sound therefrom is not desired should be covered with acoustic barrier panels (4).
[0050] In the preferred embodiment, where acoustic barrier panels (4) are attached to both longitudinal edges of the top (2) and bottom (3) plates, a cavity (6) will be formed between the panels (4). To further limit the transmission of sound across the acoustic barrier system (1), this cavity (6) may be filled with a sound dampening material, such as foam or insulation.
[0051] As mentioned above, the bottom plate (3) is connected to a portion of the suspended ceiling system (10) by a fastener. Although some applications may permit the use of standard fasteners, such as hexagonal nuts, it is preferred that the fastener (5) shown in FIG. 5 be used with the acoustic barrier system (1) described herein. The fastener (5) shown in FIG. 5 includes a plastic or lightweight metal plate (30). Preferably the dimensions of the plate (30) correspond to the inside dimension between the two solid support members (20), in order to minimize lateral movement of the plate (30) within the bottom plate (3). The plate (30) having a passage (31) disposed therethrough. The passage (31) allows for a spline (15) attached to the grid system of the suspended ceiling system (10), or a spline formed as part of the grid system, to pass through the fastener (5). For the purposes of this description, the term spline means any element attached to the grid system of the suspended ceiling system or formed as a part of the grid system that can be inserted through the passage (31) in the fastener (5) and used to connect the bottom plate (4) to the grid system. In other words, hooks, catches, spring-loaded tensioners are all considered splines for the purpose of this description, [0052] In the case where the spline is a threaded bolt, the fastener (5), along with hexagonal nut corresponding to the threaded bolt, may be used to compress the bottom plate (4) against the grid system of the suspended ceiling (10). However, it is preferred that the dimensions of the passage (31) be made slightly smaller than the width of the spline (15), so that the spline (15) is held in place in the passage (31) by friction. In order to make the fastener (5) easier to work with during installation of the system (1), the plate (30) is designed to have a convex area (32) surrounding the passage (31) (see FIG. 6). This convex area (32) will provide greater flexibility for the passage (31) to spread apart while the spline (15) is being inserted therethrough, yet will provided sufficient rigidity to frictionally engage with the spline (15) to prevent lateral and vertical movement of the fastener (5) in relation to the spline (15).
[0053] In an effort to provide greater usability with the fastener (5), including the ability to accommodate a larger number of splines (15) with different dimensions, reliefs (33) can be provided at either end of the passage (31) (see FIG, 5). These reliefs (33) also allow for the convex area (32) to be formed on the plate (30).
[0054] The dimensions of the passage (31) can be customized depending on the type of spline (15) being used. However, in most cases the spline (15) will have a rectangular tab shape, similar to that shown in the drawings. In this case, the passage (31) can be provided as a slot, as shown in PIG. 5.
[0055] Although the edges of the plate (30) that engage the bottom plate (4) can have any shape, so long as it sufficiently overlaps the bottom plate (4) to hold it in place, it is preferred that these edges are arch-shaped as shown in FIGS. 5 and 6. This shape allows for slight adjustment to the positioning the fastener (5) in relation to the bottom plate (4) during installation, [0056] The fastener (5) described herein is preferably used with the acoustic barrier system (1). However, it can also be used to attach other elements to the suspended ceiling system (10). For example, wires and networking cables may forced against the grid system of the suspended ceiling system to prevent them from coming into contact with other meclumical systems in the plenum. Moreover, the fasteners could be used, alone or in conjunction with other devices, to put pressure against a ceiling tile to prevent it from raising up from the grid system.
[0057] The nature of the acoustic barrier system (1) described herein, allows for relatively easy installation without much disruption to the workplace. The system (1) is typically installed by positioning the bottom plate (3) on a portion of the grid system of the suspended ceiling system (10). Preferably, the bottom plate (3) is aligned with either the main beam (12) or a series of cross-tees (11) of the grid system. The top plate (2) is aligned with the bottom plate (4) and is attached to the slab (16) in a vertical plane with the bottom plate (3).
Although it is desirable to install the bottom plate (3) prior to the top plate (2), the top plate (2) could be installed first and the bottom plate (3) aligned in a vertical plane therewith.
[0058] Once the top (2) and bottom (3) plates are aligned, the bottom plate (3) can be fastened to the grid system of the suspended ceiling system (10) by using a fastener (5) as described above.
[0059] The acoustic barrier panels (4) are then installed to the top (2) and bottom (3) plates, In the case where acoustic barrier panels (4) are placed on either side of the top (2) and bottom (3) plates, a sound dampening material may be added to the cavity (6) created by the panels (4), prior to the second acoustic barrier panel (4) being attached to the top (2) and bottom (3) plates, [0060] If portions of the grid system of the suspended ceiling system (10) are in the way of an acoustic bather panel (4) being attached to the bottom plate (3), then slits/notches should be cut in the panels (4) to accommodate those portions of the gild.
[0061] It is contemplated that the individual components of the acoustic barrier system (1) described herein may be sold individually or as part of a kit, In this case, the kit would include a top plate (2), a bottom plate (3), at least one acoustic barrier panel (4), one or more fasteners (5) for attaching the bottom plate (3) to the grid system of the suspended ceiling system (10) and a set of instructions for use thereof. Each of these components could have the features described above, The kit might also include splines (15) to attach to the grid system.
As well, sound dampening material for placement between the two acoustic barrier panels may also be included in the kit.
[0061] One or more currently preferred embodiments have been described by way of example.
It will be apparent to persons skilled in the art that a number of variations and modifications can be made without departing from the scope of the invention as defined in the claims.
Claims (47)
1. An acoustic barrier system for use in a plenum space, said acoustic barrier system comprising:
a first two part plate or rail for attachment to a first plenum surface;
a second two part plate or tail for attachment to a second plenum surface, wherein the first two part plate or rail is parallel to the second two part plate or rail; and at least one semi-rigid acoustic bather panel that connects the first and second two part plates or rails;
wherein the two parts of the plates or rails are held apart by a non-sound transmitting material and form an assembly that can be installed as a single unit.
a first two part plate or rail for attachment to a first plenum surface;
a second two part plate or tail for attachment to a second plenum surface, wherein the first two part plate or rail is parallel to the second two part plate or rail; and at least one semi-rigid acoustic bather panel that connects the first and second two part plates or rails;
wherein the two parts of the plates or rails are held apart by a non-sound transmitting material and form an assembly that can be installed as a single unit.
2. The acoustic barrier system of claim 1, further comprising a fastener for connecting the second two part plate or rail to a portion of a suspended ceiling system,
3. The acoustic barrier system of claim 1 or 2, wherein the first two part plate or rail comprises two solid support structures interspaced from one another by a plurality of spacers,
4. The acoustic barrier system of any one of claims 1 to 3, wherein the second two part plate or rail comprises two solid support structures interspaced from one another by a plurality of spacers.
5. The acoustic barrier system of claim 3 or 4, wherein the plurality of spacers are lied foam blocks, or open or closed cell foam board with or without foe retardant additives.
6. The acoustic barrier system of claim 5, wherein the rigid foam blocks are extruded polystyrene or polyisocyanate.
7. The acoustic barrier system of any one of claims 1 to 6, wherein at least one semi-rigid acoustic barrier panel is used to connect a longitudinal side of the first two part plate or rail to the corresponding longitudinal side of the second two part plate or rail and a corresponding number of semi-rigid acoustic barrier panels are used to connect the opposite longitudinal side of the first two part plate or rail to the corresponding longitudinal side of the second two part plate or rail.
8. The acoustic barrier system of claim 7, wherein a cavity is formed between the at least one semi-rigid acoustic barrier panel and the corresponding number of semi-rigid acoustic barrier panels.
9. The acoustic barrier system of claim 8, wherein the cavity is filled with a sound dampening material.
10. The acoustic barrier system of any one of claims 1 to 9, wherein the semi-rigid acoustic barrier panels comprise polyester fiber boards with or without foil scrim kraft facing, acoustical foam boards, mass loaded vinyl boards, aluminum faced fire retardant blankets with foil scrim kraft facing, rigid or semi-rigid fiberglass board with or without foil scrim kraft facing, mineral fiber rigid board with or without foil scrim kraft facing, or compressed recycled cotton with or without foil scrim kraft facing.
11. The acoustic barrier system of claim 10, wherein the semi-rigid acoustic barrier panels comprise polyester fiber boards with or without foil scrim kraft facing.
12. The acoustic barrier system of any one of claims 1 to 9, wherein the semi-rigid acoustic barrier panels are made from stone wool insulation with multi-directional fiber orientation.
13. The acoustic bather system of any one of claims 1 to 12, wherein the semi-rigid acoustic barrier panels are cut to accommodate portions of the grid system of a suspended ceiling system.
14. The acoustic barrier system of claim 2, wherein the fastener comprises a plate dimensioned to engage a portion of the second two part plate or rail, and a slot for accommodating passage of a spline connected to a portion of a suspended ceiling system.
15. The acoustic barrier system of claim 14, farther comprising a convex area extending from the plate and surrounding the slot so that the edges of the slot frictionally engage the spline to hold the spline in place.
16. The acoustic barrier system of claim 14 or 15, wherein the plate further comprises reliefs on either side of the passage to facilitate the passage of the spline.
17. The acoustic barrier system of any one of claims 14 to 16, wherein the sides of the plate that engage the second two part plate or rail are arched towards the center of the plate.
18. The acoustic barrier system of any one of claims 1 to 17, wherein the plenum is the space between a suspended ceiling system and the underside of the slab directly above the ceiling
19. A method for installing the acoustic barrier system of any one of claims 1 to 18 in a plenum space, said method comprising the steps of:
positioning the first two part plate or rail on a first plenum surface;
attaching the second two part plate or rail on a second plenum surface parallel to the first two part plate or rail;
inserting a non-sound transmitting material between the two parts of the plates or rails to form an assembly; and attaching at least one semi-rigid acoustic barrier panel to the first and second two part plates or rails.
positioning the first two part plate or rail on a first plenum surface;
attaching the second two part plate or rail on a second plenum surface parallel to the first two part plate or rail;
inserting a non-sound transmitting material between the two parts of the plates or rails to form an assembly; and attaching at least one semi-rigid acoustic barrier panel to the first and second two part plates or rails.
20. The method of claim 19, wherein the first plenum surface is a suspended ceiling system, and the method further comprises connecting the first two part plate or rail to a portion of the suspended ceiling system,
21. The method of claim 20, wherein the first two part plate or rail is connected to the suspended ceiling system by a fastener.
22. The method of claim 19, wherein at least one semi-rigid acoustic barrier panel is connected to a longitudinal side of the first two part plate or rail and to the corresponding longitudinal side of the second two part plate or rail, and a corresponding number of semi-rigid acoustic barrier panels are connected to the opposite longitudinal side of the first two part plate or rail and the corresponding longitudinal side of the second two part plate or rail.
23. The method of claim 22, further comprising filling a cavity formed between the at least one semi-rigid acoustic barrier panel and the corresponding number of semi-rigid acoustic barrier panels with a sound dampening material.
24. The method according to claim 20 or 21, further comprising the step of cutting the semi-rigid acoustic barrier panels to accommodate portions of the grid system of the suspended ceiling system prior to attaching the semi-rigid acoustic barrier panel to the top and bottom plates.
25. Use of the acoustic barrier system of any one of claims 1 to 18 for limiting sound transmission through a plenum.
26. A kit for limiting sound transmission through a plenum space, said kit comprising:
a first two part plate or rail for attachment to a first plenum surface;
a second two part plate or rail for attachment to a second plenum surface;
a non-sound transmitting material for insertion between the two parts of the plates or rails to form an assembly;-18-at least one semi-rigid acoustic barrier panel that connects the first two part plate or rail with the second two part plate or rail; and instructions for use.
a first two part plate or rail for attachment to a first plenum surface;
a second two part plate or rail for attachment to a second plenum surface;
a non-sound transmitting material for insertion between the two parts of the plates or rails to form an assembly;-18-at least one semi-rigid acoustic barrier panel that connects the first two part plate or rail with the second two part plate or rail; and instructions for use.
27. The kit of claim 26, wherein the first plenum surface is a suspended ceiling system, and the kit further comprises a fastener for connecting the first two part plate or rail to a portion of the suspended ceiling system.
28. The kit of claim 26 or 27, wherein the first two part plate or rail comprises two solid support structures interspaced from one another by a plurality of spacers.
29. The kit of any one of claims 26 to 28, wherein the second two part plate or rail comprises two solid support structures interspaced from one another by a plurality of spacers.
30. The kit of claim 28 or 29, wherein the plurality of spacers are rigid foam blocks, or open or closed cell foam board with or without fire retardant additives,
31. The kit of claim 30, wherein the rigid foam blocks are extruded polystyrene or polyisocyanate.
32. The kit of any one of claims 26 to 31, wherein two semi-rigid acoustic barrier panels are provided.
33. The kit of any one of claims 26 to 32, further comprising a sound dampening material for filling a cavity formed between two semi-rigid acoustic barrier panels.
34. The kit of any one of claims 26 to 33, wherein the semi-rigid acoustic barrier panels are polyester fiber boards.
35. The kit of claim 34, wherein the polyester fiber boards further comprise a foil scrim kraft facing.
36. The kit of any one of claims 26 to 33, wherein the semi-rigid acoustic barrier panels are made from stone wool insulation with multi-directional fiber orientation.
37. The kit of claim 27, wherein the semi-rigid acoustic barrier panels are cut to accommodate portions of the grid system of the suspended ceiling system,
38. The kit of claim 27, wherein the fastener comprises a plate dimensioned to engage a portion of the first two part plate or rail, and a slot for accommodating passage of a spline connected to a portion of the suspended ceiling system.
39. The kit of claim 38, wherein the fastener further comprises a convex area extending from the plate and surrounding the slot so that the edges of the slot frictionally engage the spline to hold the spline in place.
40. The kit of claim 38 or 39, wherein the plate further comprises reliefs on either side of the passage to facilitate the passage of the spline.
41. The kit of any one of claims 38 to 40, wherein the sides of the plate that engage the first two part plate or rail are arched towards the center of the plate,
42. A fastener for linking an element in a plenum to a main beam in a suspended ceiling system, said fastener comprising:
a plate dimensioned to engage the element in the plenum; and a passage for accommodating passage of a spline connected to the main beam in the suspended ceiling system.
a plate dimensioned to engage the element in the plenum; and a passage for accommodating passage of a spline connected to the main beam in the suspended ceiling system.
43. The fastener of claim 42, further comprising a convex area extending from the plate and surrounding the passage so that the edges of the passage frictionally engage the spline to hold the spline in place,
44. The fastener of claim 42 or 43, wherein the plate further comprises reliefs on either side of the passage to facilitate the passage of the spline.
45. The fastener of any one of claims 42 to 44, wherein the sides of the plate that engage a two part plate or rail are arched towards the center of the plate.
46. The fastener of any one of claims 42 to 45, wherein the passage is a slot.
47. Use of the fastener of any one of claims 42 to 46 in installing an acoustic barrier system in a plenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2756963 CA2756963A1 (en) | 2011-11-07 | 2011-11-07 | Plenum barrier system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2756963 CA2756963A1 (en) | 2011-11-07 | 2011-11-07 | Plenum barrier system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2756963A1 true CA2756963A1 (en) | 2013-05-07 |
Family
ID=48239827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2756963 Abandoned CA2756963A1 (en) | 2011-11-07 | 2011-11-07 | Plenum barrier system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2756963A1 (en) |
-
2011
- 2011-11-07 CA CA 2756963 patent/CA2756963A1/en not_active Abandoned
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| Date | Code | Title | Description |
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| FZDE | Dead |
Effective date: 20171107 |