Acoustic building stud

Abstract

A building stud for attenuating the transmission of soundwaves through the stud, the stud comprising a first flange, a second flange substantially parallel to the first flange; a web joining the first flange to the second flange; a single projection extending from and continuously formed with the web; the projection having a first protruding section and a second protruding section each protruding from the web, the projection further having a valley portion between the first protruding section and the second protruding section.

Description

PRIORITY CLAIM

[0001] The present application claims priority from Australian Provisional Patent Application No. 2025901058, filed on 31 Mar. 2025. The contents of the priority application are hereby incorporated herein by reference.TECHNICAL FIELD

[0002] The present invention relates generally to the field of building studs and more particularly to an improved acoustic building stud having features that reduce or attenuate the transmission of soundwaves and noise through a building structure, such as a wall.BACKGROUND

[0003] It is a requirement in most countries to meet minimum standards when providing sound insulation in a structure such as a wall between rooms of a dwelling or residence. Most internal walls are constructed from a pair of plaster boards which are supported and joined to each other through a series of studs, with each stud being set in place with one end of the stud connected to a ceiling structure and the other end of the stud connected to a floor structure.

[0004] Noise and sound, including external factors such as wind, travel through the wall through each stud or other transmission points located internally of the wall. Attempts have previously been made to overcome or at least reduce the transmission of this noise from one room to another by modifying the stud and particularly in the web of each stud. Such attempts have been included in prior art documents such as European Patent No. 1127989, Australian Patent No. 2004203463 and Australian Patent No. 2003242835. In these documents there is no conclusive evidence that the sound transmission through a wall has been substantially reduced and therefore improved the overall acoustics of a wall.

[0005] In the European Patent No. 1127989 an M-rung is provided in the web of the stud, a part of which has a thickness of up to 4 times the thickness of a cross piece 8. The document makes no reference to how the sound insulation has improved and appears to be complex in design.

[0006] Australian Patent No. 2004203463 has an internal projection that projects from the web of a stud that has a number of faces that deflect under pressure, whereby opposed faces compress towards one another while other faces around the projection deflect outwardly due to the impact of an external soundwave.

[0007] Australian Patent No. 2003242835 has a semi-circular curved member which extends outwardly of a web of the stud and provides slots within the curved member to attenuate sounds that travel through the stud.

[0008] The present invention seeks to improve the acoustics of a stud wall by reducing as much as possible the sound transmission through the wall while maintaining the structural integrity of the stud while absorbing relatively high stresses from the soundwaves.DISCLOSURE OF THE INVENTION

[0009] In a first aspect, the present invention comprises a building stud for attenuating the transmission of soundwaves through the stud, said stud comprising:

[0010] a first flange;

[0011] a second flange substantially parallel to the first flange;

[0012] a web joining said first flange to the second flange,

[0013] a single projection extending from and continuously formed with the web;

[0014] the projection having a first protruding section and a second protruding section each protruding from said web, the projection further having a valley portion between the first protruding section and the second protruding section.

[0015] The first protruding section preferably has a first face, a first side and a first ridge joining said first side and said first face. The second protruding section preferably has a second face, a second side and a second ridge joining said second side and said second face, said first face being substantially parallel to said second face.

[0016] The valley portion preferably shares said first side of said first protruding section and shares said second side of said second protruding section and has a middle section joining the first side and the second side.

[0017] The first ridge and the second ridge may be spaced at substantially the same distance from the web. The projection can extend from said web into an interior space of the stud between the first and second flanges by more than half the width of the first and second flanges.

[0018] The middle section of the valley portion is preferably positioned from the web by less than half the distance between the ridges and the web. The projection is preferably integrally formed in the web and is offset from a centre line of the web, such that a first portion of the web between the first flange and the projection is smaller in width compared to a second portion of the web between the second flange and the projection. The first side and the second side may be angled apart from one another and define an acute angle between each other.

[0019] In an embodiment, the single projection is adapted to flex when subjected to soundwaves.

[0020] Further or alternative embodiments of the invention may be disclosed herein or may otherwise become apparent to the person skilled in the art through the disclosure herein. These and other embodiments are considered to fall within the scope and object of the invention.BRIEF DESCRIPTION OF THE FIGURES

[0021] Embodiments of the present invention will now be described, by way of example only, in relation to the Figures, wherein:

[0022] FIG. 1 is an end view of a building stud for use in providing support to a wall;

[0023] FIG. 2 is an isometric view from the front of part of the stud of FIG. 1;

[0024] FIG. 3 is an isometric view from the rear of part of the stud of FIG. 1;

[0025] FIGS. 4a and 4b are respectively end views of the stud of FIG. 1 but showing the flexibility of the stud when subjected to compression or extension;

[0026] FIG. 5 is a table that provides an acoustic comparison of the present invention compared to other studs in terms of percentage difference of transmission loss through the studs; and

[0027] FIG. 6 is a table similar to that shown in FIG. 5 that provides an acoustic comparison of the present invention compared to other studs in terms of actual measured transmission loss through the studs.DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0028] In an embodiment, referring to FIG. 1 there is shown an end view of a building stud 2 that is typically used in the construction of an internal wall of a residence. The stud 2 has a first flange 4, a second flange 6 which is parallel to and opposite the first flange 4. Joining the first flange 4 to the second flange 6 is a web 8, with the web 8 having a first portion 10 and a second portion 14. In between the portions 10 and 14 there is a single projection 12 which is respectively joined to or formed integrally with the first portion 10 through section 37, and joined to or formed integrally with the second portion 14 through section 34. The projection 12 is continuously formed with each of the portions 10 and 14 and projects outwardly from the web 8 into an interior space 9 between the first flange 4 and the second flange 6. A first bend 36 is defined between the first flange 4 and the first portion 10 of web 8, while a second bend 38 is defined between the second flange 6 and the second portion 14 of the web 8.

[0029] The projection 12 is made up of a first raised (protruding) section 31 and a second raised (protruding) section 32, each of which protrude from the web 8 into interior space 9. The first protruding section 31 has a first face 20, a first side 24 and a first ridge 23 between the first face 20 and the first side 24. The second protruding section 32 has a second face 22, which is spaced apart and parallel to the first face 20, a second side 26 and a second ridge 25 between the second face 22 and the second side 26. The first face 20 is continuously joined to the second face 22 at respective ridges 23 and 25 by a valley portion 27. The valley portion 27 is made up of the first side 24, the second side 26 and a middle section 29 which joins the first side 24 to the second side 26. The first side 24 is angled with respect to the first face 20 while the second side 26 is angled with respect to the second face 22. Both the sides 26 and 24 are angled apart from each other between the middle section 29 and the respective ridges 23 and 25, but form an acute angle. The arrangement produces a first protruding section 31 and a second protruding section 32 with a lateral space 33 defined between the first and second protruding sections 31, 32. A pair of outer edges 16 and 18 respectively protrude from the first flange 4 and the second flange 6.

[0030] In this embodiment, each of the first face 20 and second face 22 have the same width (or height), such that ridges 23 and 25 are each spaced from the web 8 at about the same distance. However, the widths or heights of the first face 20 and second face 22 can be different and the first and second protruding sections 31, 32 can be of a different size to one another. The middle section 29 of the valley portion 27 is spaced from web 8 by a distance that is less than half the distance from each of the ridges 23, 25 to web 8. However, the distance that the middle section 29 is from web 8 can be variable, regardless of the distance between middle section 29 and each ridge 23, 25.

[0031] In this embodiment, the projection 12 extends from web 8 into interior space 9 by more than half the width of the first and second flanges 4, 6. Although projection 12 is not exactly in the middle of the web 8, but is offset, such that the first portion 10 is smaller in width than the second portion 14 of the web 8, projection 12 can extend from web 8 at any convenient position along web 8, including extending along a centre 13 of the web 8.

[0032] The projection 12 assists in attenuating sound transmissions across the stud 2 with its size and shape and also due to having the first and second protruding sections 31, 32 either side of a valley portion 27. Any soundwave, created by a sound, noise or wind for example, has a longer path to traverse through the projection 12 and this assists in reducing the transmissibility of any noise or sound. Such a path includes moving along first and second portions 10, 14 in web 8, along first and second faces 20, 22 and valley portion 27.

[0033] Referring to FIGS. 4a and 4b, the drawings show the flexibility of the stud 2. In FIG. 4a the normal tension applied to the stud 2 is with the stud shown in the open line format 40. This is in its normal unstressed condition, whereas in the full black line format 42, the stud 2 is shown in a compressed and stressed condition in which it generally keeps its shape apart from a smaller difference of angle between the first side 24 and the second side 26 compared to the unstressed position.

[0034] In FIG. 4b the stud 2 has a normal tension applied thereto as shown in the open line format 40. This is in its normal unstressed condition. In the full black line format 42 the stud 2 is shown in an expanded or stretched condition from its original resting position, whereby the angle between the first side 24 and the second side 26 has increased compared to the original unstressed position. In relation to both FIGS. 4a and 4b, when sound reaches the stud 2, the stud 2 can flex slightly, depending on the situation. The flex mainly occurs in the “M” area (projection 12) of the stud 2 affecting at least the first face 20, second face 22, first side 24 and second side 26.

[0035] Referring to FIGS. 5 and 6 there is shown two tables 50 and 60 that respectively provide a comparison of transmission loss across the stud 2 compared to different prior art studs, in terms of percentage difference (FIG. 5) and actual values measured (FIG. 6). In particular, it is noted that with the present invention, that is the SO1 stud, it has the characteristics shown in the last line of each table 50, 60. The transmission loss is significantly greater than most of the other prior art studs, identified as Prior Art Samples 1 to 4, particularly at transmission frequencies of 125 Hz and 2000 Hz. As an example, at 2000 Hz the transmission loss in Prior Art Sample 4 is 26.920 dB compared to 30.270 dB in the present invention stud (S01). Thus, the transmission loss using the S01 stud is 11.07% higher or greater than the loss using the Prior Art Sample 4 stud. The percentage is calculated as (1−26.92 / 30.27)×100.

[0036] While the invention has been described with reference to preferred embodiments above, it will be appreciated by those skilled in the art that it is not limited to those embodiments, but may be embodied in many other forms, variations and modifications other than those specifically described. The invention includes all such variation and modifications. The invention also includes all of the steps, features, components and / or devices referred to or indicated in the specification, individually or collectively and any and all combinations or any two or more of the steps or features.

[0037] In this specification, unless the context clearly indicates otherwise, the word “comprising” is not intended to have the exclusive meaning of the word such as “consisting only of”, but rather has the non-exclusive meaning, in the sense of “including at least”. The same applies, with corresponding grammatical changes, to other forms of the word such as “comprise”, etc.

[0038] Other definitions for selected terms used herein may be found within the detailed description of the invention and apply throughout. Unless otherwise defined, all other scientific and technical terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which the invention belongs.

[0039] Any promises made in the present document should be understood to relate to some embodiments of the invention and are not intended to be promises made about the invention in all embodiments. Where there are promises that are deemed to apply to all embodiments of the invention, the applicant / patentee reserves the right to later delete them from the description and they do not rely on these promises for the acceptance or subsequent grant of a patent in any country.

Examples

Embodiment Construction

[0028]In an embodiment, referring to FIG. 1 there is shown an end view of a building stud 2 that is typically used in the construction of an internal wall of a residence. The stud 2 has a first flange 4, a second flange 6 which is parallel to and opposite the first flange 4. Joining the first flange 4 to the second flange 6 is a web 8, with the web 8 having a first portion 10 and a second portion 14. In between the portions 10 and 14 there is a single projection 12 which is respectively joined to or formed integrally with the first portion 10 through section 37, and joined to or formed integrally with the second portion 14 through section 34. The projection 12 is continuously formed with each of the portions 10 and 14 and projects outwardly from the web 8 into an interior space 9 between the first flange 4 and the second flange 6. A first bend 36 is defined between the first flange 4 and the first portion 10 of web 8, while a second bend 38 is defined between the second flange 6 and...

PRIORITY CLAIM

[0001] The present application claims priority from Australian Provisional Patent Application No. 2025901058, filed on 31 Mar. 2025. The contents of the priority application are hereby incorporated herein by reference.TECHNICAL FIELD

[0002] The present invention relates generally to the field of building studs and more particularly to an improved acoustic building stud having features that reduce or attenuate the transmission of soundwaves and noise through a building structure, such as a wall.BACKGROUND

[0003] It is a requirement in most countries to meet minimum standards when providing sound insulation in a structure such as a wall between rooms of a dwelling or residence. Most internal walls are constructed from a pair of plaster boards which are supported and joined to each other through a series of studs, with each stud being set in place with one end of the stud connected to a ceiling structure and the other end of the stud connected to a floor structure.

[0004] Noise and sound, including external factors such as wind, travel through the wall through each stud or other transmission points located internally of the wall. Attempts have previously been made to overcome or at least reduce the transmission of this noise from one room to another by modifying the stud and particularly in the web of each stud. Such attempts have been included in prior art documents such as European Patent No. 1127989, Australian Patent No. 2004203463 and Australian Patent No. 2003242835. In these documents there is no conclusive evidence that the sound transmission through a wall has been substantially reduced and therefore improved the overall acoustics of a wall.

[0005] In the European Patent No. 1127989 an M-rung is provided in the web of the stud, a part of which has a thickness of up to 4 times the thickness of a cross piece 8. The document makes no reference to how the sound insulation has improved and appears to be complex in design.

[0006] Australian Patent No. 2004203463 has an internal projection that projects from the web of a stud that has a number of faces that deflect under pressure, whereby opposed faces compress towards one another while other faces around the projection deflect outwardly due to the impact of an external soundwave.

[0007] Australian Patent No. 2003242835 has a semi-circular curved member which extends outwardly of a web of the stud and provides slots within the curved member to attenuate sounds that travel through the stud.

[0008] The present invention seeks to improve the acoustics of a stud wall by reducing as much as possible the sound transmission through the wall while maintaining the structural integrity of the stud while absorbing relatively high stresses from the soundwaves.DISCLOSURE OF THE INVENTION

[0009] In a first aspect, the present invention comprises a building stud for attenuating the transmission of soundwaves through the stud, said stud comprising:

[0010] a first flange;

[0011] a second flange substantially parallel to the first flange;

[0012] a web joining said first flange to the second flange,

[0013] a single projection extending from and continuously formed with the web;

[0014] the projection having a first protruding section and a second protruding section each protruding from said web, the projection further having a valley portion between the first protruding section and the second protruding section.

[0015] The first protruding section preferably has a first face, a first side and a first ridge joining said first side and said first face. The second protruding section preferably has a second face, a second side and a second ridge joining said second side and said second face, said first face being substantially parallel to said second face.

[0016] The valley portion preferably shares said first side of said first protruding section and shares said second side of said second protruding section and has a middle section joining the first side and the second side.

[0017] The first ridge and the second ridge may be spaced at substantially the same distance from the web. The projection can extend from said web into an interior space of the stud between the first and second flanges by more than half the width of the first and second flanges.

[0018] The middle section of the valley portion is preferably positioned from the web by less than half the distance between the ridges and the web. The projection is preferably integrally formed in the web and is offset from a centre line of the web, such that a first portion of the web between the first flange and the projection is smaller in width compared to a second portion of the web between the second flange and the projection. The first side and the second side may be angled apart from one another and define an acute angle between each other.

[0019] In an embodiment, the single projection is adapted to flex when subjected to soundwaves.

[0020] Further or alternative embodiments of the invention may be disclosed herein or may otherwise become apparent to the person skilled in the art through the disclosure herein. These and other embodiments are considered to fall within the scope and object of the invention.BRIEF DESCRIPTION OF THE FIGURES

[0021] Embodiments of the present invention will now be described, by way of example only, in relation to the Figures, wherein:

[0022] FIG. 1 is an end view of a building stud for use in providing support to a wall;

[0023] FIG. 2 is an isometric view from the front of part of the stud of FIG. 1;

[0024] FIG. 3 is an isometric view from the rear of part of the stud of FIG. 1;

[0025] FIGS. 4a and 4b are respectively end views of the stud of FIG. 1 but showing the flexibility of the stud when subjected to compression or extension;

[0026] FIG. 5 is a table that provides an acoustic comparison of the present invention compared to other studs in terms of percentage difference of transmission loss through the studs; and

[0027] FIG. 6 is a table similar to that shown in FIG. 5 that provides an acoustic comparison of the present invention compared to other studs in terms of actual measured transmission loss through the studs.DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0028] In an embodiment, referring to FIG. 1 there is shown an end view of a building stud 2 that is typically used in the construction of an internal wall of a residence. The stud 2 has a first flange 4, a second flange 6 which is parallel to and opposite the first flange 4. Joining the first flange 4 to the second flange 6 is a web 8, with the web 8 having a first portion 10 and a second portion 14. In between the portions 10 and 14 there is a single projection 12 which is respectively joined to or formed integrally with the first portion 10 through section 37, and joined to or formed integrally with the second portion 14 through section 34. The projection 12 is continuously formed with each of the portions 10 and 14 and projects outwardly from the web 8 into an interior space 9 between the first flange 4 and the second flange 6. A first bend 36 is defined between the first flange 4 and the first portion 10 of web 8, while a second bend 38 is defined between the second flange 6 and the second portion 14 of the web 8.

[0029] The projection 12 is made up of a first raised (protruding) section 31 and a second raised (protruding) section 32, each of which protrude from the web 8 into interior space 9. The first protruding section 31 has a first face 20, a first side 24 and a first ridge 23 between the first face 20 and the first side 24. The second protruding section 32 has a second face 22, which is spaced apart and parallel to the first face 20, a second side 26 and a second ridge 25 between the second face 22 and the second side 26. The first face 20 is continuously joined to the second face 22 at respective ridges 23 and 25 by a valley portion 27. The valley portion 27 is made up of the first side 24, the second side 26 and a middle section 29 which joins the first side 24 to the second side 26. The first side 24 is angled with respect to the first face 20 while the second side 26 is angled with respect to the second face 22. Both the sides 26 and 24 are angled apart from each other between the middle section 29 and the respective ridges 23 and 25, but form an acute angle. The arrangement produces a first protruding section 31 and a second protruding section 32 with a lateral space 33 defined between the first and second protruding sections 31, 32. A pair of outer edges 16 and 18 respectively protrude from the first flange 4 and the second flange 6.

[0030] In this embodiment, each of the first face 20 and second face 22 have the same width (or height), such that ridges 23 and 25 are each spaced from the web 8 at about the same distance. However, the widths or heights of the first face 20 and second face 22 can be different and the first and second protruding sections 31, 32 can be of a different size to one another. The middle section 29 of the valley portion 27 is spaced from web 8 by a distance that is less than half the distance from each of the ridges 23, 25 to web 8. However, the distance that the middle section 29 is from web 8 can be variable, regardless of the distance between middle section 29 and each ridge 23, 25.

[0031] In this embodiment, the projection 12 extends from web 8 into interior space 9 by more than half the width of the first and second flanges 4, 6. Although projection 12 is not exactly in the middle of the web 8, but is offset, such that the first portion 10 is smaller in width than the second portion 14 of the web 8, projection 12 can extend from web 8 at any convenient position along web 8, including extending along a centre 13 of the web 8.

[0032] The projection 12 assists in attenuating sound transmissions across the stud 2 with its size and shape and also due to having the first and second protruding sections 31, 32 either side of a valley portion 27. Any soundwave, created by a sound, noise or wind for example, has a longer path to traverse through the projection 12 and this assists in reducing the transmissibility of any noise or sound. Such a path includes moving along first and second portions 10, 14 in web 8, along first and second faces 20, 22 and valley portion 27.

[0033] Referring to FIGS. 4a and 4b, the drawings show the flexibility of the stud 2. In FIG. 4a the normal tension applied to the stud 2 is with the stud shown in the open line format 40. This is in its normal unstressed condition, whereas in the full black line format 42, the stud 2 is shown in a compressed and stressed condition in which it generally keeps its shape apart from a smaller difference of angle between the first side 24 and the second side 26 compared to the unstressed position.

[0034] In FIG. 4b the stud 2 has a normal tension applied thereto as shown in the open line format 40. This is in its normal unstressed condition. In the full black line format 42 the stud 2 is shown in an expanded or stretched condition from its original resting position, whereby the angle between the first side 24 and the second side 26 has increased compared to the original unstressed position. In relation to both FIGS. 4a and 4b, when sound reaches the stud 2, the stud 2 can flex slightly, depending on the situation. The flex mainly occurs in the “M” area (projection 12) of the stud 2 affecting at least the first face 20, second face 22, first side 24 and second side 26.

[0035] Referring to FIGS. 5 and 6 there is shown two tables 50 and 60 that respectively provide a comparison of transmission loss across the stud 2 compared to different prior art studs, in terms of percentage difference (FIG. 5) and actual values measured (FIG. 6). In particular, it is noted that with the present invention, that is the SO1 stud, it has the characteristics shown in the last line of each table 50, 60. The transmission loss is significantly greater than most of the other prior art studs, identified as Prior Art Samples 1 to 4, particularly at transmission frequencies of 125 Hz and 2000 Hz. As an example, at 2000 Hz the transmission loss in Prior Art Sample 4 is 26.920 dB compared to 30.270 dB in the present invention stud (S01). Thus, the transmission loss using the S01 stud is 11.07% higher or greater than the loss using the Prior Art Sample 4 stud. The percentage is calculated as (1−26.92 / 30.27)×100.

[0036] While the invention has been described with reference to preferred embodiments above, it will be appreciated by those skilled in the art that it is not limited to those embodiments, but may be embodied in many other forms, variations and modifications other than those specifically described. The invention includes all such variation and modifications. The invention also includes all of the steps, features, components and / or devices referred to or indicated in the specification, individually or collectively and any and all combinations or any two or more of the steps or features.

[0037] In this specification, unless the context clearly indicates otherwise, the word “comprising” is not intended to have the exclusive meaning of the word such as “consisting only of”, but rather has the non-exclusive meaning, in the sense of “including at least”. The same applies, with corresponding grammatical changes, to other forms of the word such as “comprise”, etc.

[0038] Other definitions for selected terms used herein may be found within the detailed description of the invention and apply throughout. Unless otherwise defined, all other scientific and technical terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which the invention belongs.

[0039] Any promises made in the present document should be understood to relate to some embodiments of the invention and are not intended to be promises made about the invention in all embodiments. Where there are promises that are deemed to apply to all embodiments of the invention, the applicant / patentee reserves the right to later delete them from the description and they do not rely on these promises for the acceptance or subsequent grant of a patent in any country.

Examples

Embodiment Construction

[0028]In an embodiment, referring to FIG. 1 there is shown an end view of a building stud 2 that is typically used in the construction of an internal wall of a residence. The stud 2 has a first flange 4, a second flange 6 which is parallel to and opposite the first flange 4. Joining the first flange 4 to the second flange 6 is a web 8, with the web 8 having a first portion 10 and a second portion 14. In between the portions 10 and 14 there is a single projection 12 which is respectively joined to or formed integrally with the first portion 10 through section 37, and joined to or formed integrally with the second portion 14 through section 34. The projection 12 is continuously formed with each of the portions 10 and 14 and projects outwardly from the web 8 into an interior space 9 between the first flange 4 and the second flange 6. A first bend 36 is defined between the first flange 4 and the first portion 10 of web 8, while a second bend 38 is defined between the second flange 6 and...

Claims

1. A building stud for attenuating the transmission of soundwaves through the stud, said stud comprising:a first flange;a second flange substantially parallel to the first flange;a web joining said first flange to said second flange,a single projection extending from and continuously formed with said web;said projection having a first protruding section and a second protruding section each protruding from said web, said projection further having a valley portion between said first protruding section and said second protruding section.

2. A building stud according to claim 1 wherein the first protruding section has a first face, a first side and a first ridge joining said first side and said first face.

3. A building stud according to claim 2 wherein the second protruding section has a second face, a second side and a second ridge joining said second side and said second face, said first face being substantially parallel to said second face.

4. A building stud according to claim 3 wherein the valley portion shares said first side of said first protruding section and shares said second side of said second protruding section and has a middle section joining the first side and the second side.

5. A building stud according to claim 4 wherein the first ridge and the second ridge are spaced at substantially the same distance from the web.

6. A building stud according to claim 1 wherein the projection extends from said web into an interior space of the stud between the first and second flanges by more than half the width of the first and second flanges.

7. A building stud according to claim 4 wherein the middle section of the valley portion is positioned from the web by less than half the distance between the ridges and the web.

8. A building stud according to claim 1 wherein the projection is integrally formed in the web and is offset from a centre of the web, such that a first portion of the web between the first flange and the projection is smaller in width compared to a second portion of the web between the second flange and the projection.

9. A building stud according to claim 3 wherein the first side and the second side are angled apart from one another and define an acute angle between each other.

10. A building stud according to claim 1, wherein the single projection is adapted to flex when subjected to soundwaves.

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