EP2228500A1 - Salle de bâtiment - Google Patents

Salle de bâtiment Download PDF

Info

Publication number
EP2228500A1
EP2228500A1 EP09154779A EP09154779A EP2228500A1 EP 2228500 A1 EP2228500 A1 EP 2228500A1 EP 09154779 A EP09154779 A EP 09154779A EP 09154779 A EP09154779 A EP 09154779A EP 2228500 A1 EP2228500 A1 EP 2228500A1
Authority
EP
European Patent Office
Prior art keywords
room
silencer element
ceiling
sound
suspended ceiling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09154779A
Other languages
German (de)
English (en)
Inventor
Johannes Petrus Cornelius Vroomen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rockwool AS
Original Assignee
Rockwool International AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rockwool International AS filed Critical Rockwool International AS
Priority to EP09154779A priority Critical patent/EP2228500A1/fr
Publication of EP2228500A1 publication Critical patent/EP2228500A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/008—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation with means for connecting partition walls or panels to the ceilings

Definitions

  • the present invention relates to the reduction of sound transferred in building rooms.
  • the invention relates to a building room comprising a sound reducing structure reducing the transmission of sound from a first sub-room of the building room to a second sub-room of the building room.
  • the building room has a basic ceiling, a wall and a floor.
  • the sound reducing structure comprises a suspended ceiling arranged below the basic ceiling to form a space between the basic ceiling and the suspended ceiling.
  • the sound reducing structure further comprises a partition wall dividing the building room into the first and second sub-room, and extending from the floor of the building room to the suspended ceiling.
  • the present invention relates to a method of installing silencer element in a building room comprising a basic ceiling and a suspended ceiling, said building room being divided in a first sub-room and a second sub-room by a partition wall.
  • the method is also applicable for retrofitting in existing installations.
  • the suspended ceiling comprises a grid of profiles forming rectangular or substantially rectangular openings, wherein corresponding ceiling plates are arranged.
  • Sound absorption is a process in which sound is converted into heat over time and distance. This can be achieved in several ways, wherein a common way is to add a layer of material such as mineral wool which could be both relatively heavy and soft.
  • the silencer element advantageously may be made up from various materials with varying densities incl. interposed layers of metal or plastic film etc.
  • the known solutions often comprise ceiling plates having one layer of a fibrous material, e.g. mineral fibre, provided with a fleece layer and a layer of air permeable paint on the major surface facing the room. These ceiling plates are typically arranged in a supporting grid of profiles.
  • a fibrous material e.g. mineral fibre
  • Suspended ceilings are often used in large rooms divided into two or more smaller sub-rooms by means of partition walls.
  • the suspended ceiling is typically installed first, and a space between the suspended ceiling and the basic ceiling is formed between the basic ceiling and the suspended ceiling.
  • This space is sometimes known as "plenum”, and is commonly used for technical installations such as ventilation, plumbing and cabling for electric power and computer network etc.
  • partition walls Following the installation of the suspended ceiling, typically the partition walls are installed.
  • the partition walls will normally extend from the floor to the underside of the suspended ceiling. This construction has a very high degree of flexibility as partition walls may be arranged at any position of the building room, and further that such partition walls may be moved later, if a new division of the room is needed.
  • JP 1 022 708 3 A2 describes a structure capable of isolating sound by installing a sound reducing divisional plate in a ceiling plenum immediately above a partition wall.
  • the upper side of the divisional plate is installed in tight contact with the basic ceiling, and the lower side of the divisional plate is installed in tight contact with the upper side of the suspended ceiling. According to the disclosed construction, sound generated in adjacent rooms can be isolated.
  • NL 1 006 145 C2 describes a sound reducing structure to be installed in the plenum between a basic ceiling and a suspended ceiling.
  • the structure is composed of several adjacent plate parts of even thickness, and the structure has a thickness in the region of 60 mm.
  • the proposed material of the structure material is stone wool with a density in the vicinity of 110 kg/ m 3 .
  • Each plate part is on at least one side provided with a cover layer with closed structure, such as aluminium foil.
  • On the other side to the cover layer is a fibreglass fleece.
  • the proposed structure extends from the topside of the suspended ceiling to the underside of the basic ceiling.
  • Fig. 9 shows this prior art sound stop type of sound reducing structure.
  • the sound stops according to the prior art are typically not reusable, as each sound stop is custom made for the particular application.
  • EP 0 475 486 A1 describes a sound damping cover intended for placing over a light fixture arranged in a suspended ceiling construction in order to reduce the sound transmission there through.
  • the cover consists at least substantially of mineral wool and has a form allowing it to rest on the suspended ceiling.
  • a further object of the present invention is to present a solution which improves the sound reducing properties of a structure comprising a relatively cheap suspended ceiling, whereby the overall reduction of sound transferred from one room to another room is comparable with the reduction of sound presented by relatively expensive suspended ceilings.
  • It is an even further object of the present invention is to present a solution which reduces the level of sound transferred from one room to another room, where the solution involves with a minimum of preparation of the sound reducing means.
  • a silencer element having sound reducing or sound absorbing properties, is arranged in the space along and above the partition wall, wherein the silencer element is arranged so as to leave a gap between the silencer element and the basic ceiling or the suspended ceiling.
  • said silencer element has a width extending in the plane or substantially in the plane of the suspended ceiling and a thickness extending perpendicular or substantially perpendicular to the suspended ceiling, said width being at least two times larger than said thickness.
  • the suspended ceiling comprises a grid of profiles forming rectangular or substantially rectangular openings, wherein corresponding ceiling plates are arranged.
  • Other shapes of the ceiling plates could be used, such as square or triangular, but rectangular plates are very versatile and easy to install.
  • the silencer element may be made from any suitable material, such as paper, natural fibres, saw dust etc., but according to an embodiment the silencer element is made from mineral fibres. Mineral fibres have the advantages inter alia of high fire resistance and resistance to decomposition.
  • the density of the silencer element may be chosen for the particular purpose and does not seem to significantly change the sound reducing effect of the silencer element.
  • the silencer element has a density in the range of 50 - 500 kg/m 3 , preferably in the range 50 - 200 kg/m 3 , and even more preferably in the range 50 - 175 kg/m 3 .
  • a density of e.g. 40 kg/m 3 might be usable, but a low density may entail difficulties with handling of the silencer element, as it may disintegrate during handling.
  • the price of the silencer element, and installation thereof will normally rise with rising density, and it is found that a suitable compromise is to choose a density in the interval of 50 - 80 kg/m 3 .
  • the position of the silencer element in the plenum is not critical, but according to an embodiment the silencer element is arranged such that at least a part of said silencer element overlies said first sub-room of the room while another part of said silencer element at least borders said second sub-room of the room. Placing the silencer element like this will be advantageous as installation is very easy, also when retrofitting.
  • the surface of the silencer element is open to air diffusion. This will normally provide the best sound absorbing effect of the silencer element, although a thin foil or film could be used.
  • the silencer element may, and will often, be placed directly on the suspended ceiling, but according to an embodiment, the silencer element is installed in any height above the upper surface of the suspended ceiling. This is an advantage if technical installations hinder or restrict placement of the silencer element directly on the suspended ceiling.
  • the width of the silencer element may be chosen for the particular application, and according to an embodiment, said silencer element has a width in the interval of 200 to 1,200 mm. A width of less than 200 mm will often not be enough for a significant reduction of sound. On the other hand increasing the width to more than 1,200 mm will often not be worth the extra cost in terms of more expensive silencer elements and more difficult installation. Normally a width of 600 mm or 1,200 mm will be chosen in Europe, as these widths are standard widths, and further will result in silencer elements, which are relatively easy to handle for a craftsman.
  • the thickness of the silencer element may be chosen for the particular application, and according to an embodiment the thickness of the silencer element is in the range of 10 - 600 mm. A thickness of less than 10 mm may have some effect, but normally not enough to be sufficient. Increasing the thickness will, on the other hand, increase the cost, and using a thickness of more than 600 mm will often not be worth the extra cost. A suitable compromise will often be a thickness in the interval of 200 to 400 mm.
  • Another aspect of the invention relates to a method as outlined above.
  • the method comprises the steps of arranging a silencer element, having sound reducing or sound absorbing properties, in a space bound by the suspended ceiling and the basic ceiling, and dimensioning and arranging said silencer element so as to leave a gap between said silencer element and said basic ceiling or said suspended ceiling.
  • This method is a very cost-effective way of installing a silencer element, and hence reducing sound from room to room.
  • the silencer element does not need to fill the space, installation is very easy, and retrofitting to existing building rooms is also possible and indeed easy. Hence significant reduction of sound from room to room may be achieved at low cost by retrofitting the silencer element according to this simple method. This may significantly increase quality of life of people using such rooms, reduce stress and increase working capacity.
  • the method comprises the further step of arranging said silencer element such that at least a part of said silencer element overlies said first sub-room of the room while another part of said silencer element at least borders said second sub-room of the room.
  • the silencer element can be easily arranged from one sub-room of the room. This can for example be done by lifting one or more ceiling plates in one sub-room of the room near the partition wall and shift the silencer element into the plenum and arranging the silencer element to overlie the second sub-room of the room.
  • the silencer element may be provided as a roll, and according to an embodiment, arranging said silencer element is effected by rolling the silencer element out in the space, substantially above the partition wall. This will provide a very easy installation procedure.
  • Figures 1 and 2 show a building room divided into two parts or areas 7, 8 by a partition wall 2.
  • the room is delimited by building walls 14, a basic ceiling 3 and a floor 4.
  • a suspended ceiling 5 is mounted below the basic ceiling 3.
  • the suspended ceiling 5 will normally comprise a grid or rail system (not shown) connected to the basic ceiling 5.
  • Loose ceiling plates (not shown) are connected to the grid as known per se.
  • the basic ceiling 3, the building walls 14 and the floor 4 may be made from any kind of conventional materials such as concrete incl. modules of prefabricated sections, bricks, timber or any other suitable building material.
  • a silencer element 1 having a thickness 11, and which exhibits sound absorbing properties, is arranged in a space 6 bounded by the lower surface of the basic ceiling 3 and the upper surface of the suspended ceiling 5, and in an area above the partition wall 2. As shown, a gap or space is left between the silencer element 1 and the basic ceiling 3. However the silencer element may be arranged so as to leave a gap between the silencer element and at least one of the basic ceiling and the suspended ceiling.
  • the silencer element 1 acts as a silencer, and when sound emanating from the first sub-room or area 7 pass the silencer element 1 in the aforementioned gap, a portion of the sound will be absorbed in the silencer element 1 by lateral absorption.
  • the silencer element 1 has sound reducing properties and alternatively or supplementary has sound absorbing properties.
  • the silencer element 1 may constitute a slab or a web of low density mineral fibre wool, and extends only partially in the height of the space 6.
  • the silencer element 1 may consist of paper, bound sawdust or any other suitable material being able to make up a silencer element holding sound absorbing properties.
  • the silencer element 1 may be arranged directly or indirectly above any layer of additional material, e.g. insulation material, sound barriers or even vapour barriers etc. arranged directly or indirectly on the suspended ceiling.
  • additional material e.g. insulation material, sound barriers or even vapour barriers etc.
  • the silencer element 1 may advantageously be installed as relatively long one-piece slabs originating from a roll of web 1; however using pre-cut slabs will prove equally efficient.
  • the silencer element 1 functions as a silencer, the silencer element 1 does not need to be placed directly upon the suspended ceiling 5.
  • the silencer element 1 may be installed at any height between the upper side of the suspended ceiling 5 and the lower side of the basic ceiling 3 in the vicinity of the partition wall 2.
  • the silencer element 1 may even lie above or below technical installations 13 such as ducting 13 etc. as shown in figure 3 . Consequently, at convenience, the silencer element 1 may be rolled out as a one-piece web on top of or below any hindrance located in the space 6.
  • the silencer element 1 preferably has a length 10 extending in the plane or substantially in the plane of the suspended ceiling 5 and a thickness 11 perpendicular or substantially perpendicular to the plane of the suspended ceiling 5.
  • the length 10 will normally be of approximately the same size as the partition wall, although a length 10 being for example 10% lower than the length of the partition wall is currently expected to give acceptable results.
  • the width 9, substantially perpendicular to the partition wall 2, is preferably at least two times larger than said thickness 11 shown in figure 1 .
  • the thickness 11 of the silencer element 1 is preferably in the range of 10 - 600 mm.
  • the silencer element 1 should preferably be open to air diffusion. This means that any applied paint or fleece etc. should also be open to air diffusion. If a non-permeable layer is applied, the layer should be relatively light and thin.
  • the silencer element 1' may be displaced slightly in relation to the partition wall 2. As shown, and as verified by the below test results, the silencer element 1' may be arranged with a substantial portion overlying only one sub-room of the room, and where the edge of the silencer element 1', opposite the overlying portion, may only border the other sub-room of the room. Further, the silencer element 1' may be arranged in any position where an edge of the silencer element 1', which is substantially parallel to the partition wall 2, is arranged in the vicinity of the partition wall 2.
  • the silencer element 1 may be arranged in any height 12 between the upper surface of the suspended ceiling 5 and the lower surface of the basic ceiling 3.
  • the silencer element 1 may even be installed in varying heights meaning that the silencer element 1 in some areas may lie directly on the upper surface of the suspended ceiling 5, and in other areas lie on technical installations 13, i.e. ducting for ventilation etc.
  • the silencer element 1" may be attached to the underside of the basic sealing 3 by any suitable means of attachment.
  • the silencer element 1 may at convenience be installed in any height 12 above the upper surface of the suspended ceiling 5, as the silencer element 1 serves as a sound absorbing silencer.
  • the partition wall extends from the floor of the room to the underside of the suspended ceiling. It should however be noted, that the present invention will prove equally beneficial in configurations wherein the suspended ceiling 5 abuts an upper portion of the sides of the partition wall 2, i.e. the upper edge of the partition wall 2 terminates in the space 6 between the basic ceiling 3 and the suspended ceiling 5.
  • the silencer element 1 may be arranged such that at least a part of the silencer element 1 overlies the first sub-room 7 of the room while another part of the silencer element 1 at least borders the second sub-room 8 of the room.
  • the relative level of sound absorbed by the silencer element 1 is by nature higher in structures comprising suspended ceiling with fairly high room to room transmission of sound and vice versa in structures comprising suspended ceiling with fairly low room to room transmission of sound. Hence a high degree of sound reducing effect can be achieved at low cost in existing buildings having fairly high room to room transmission of sound.
  • ISO 717-1 takes into consideration the different sound level spectra of various sound sources.
  • the silencing effect which refers to the attenuation of sound passing into a room from the outside, such as room to room sound or sound from above ceiling surfaces, is represented in dB (DncW) according to the European standard EN 20140-9 and EN 150717/1.
  • DncW defines the average room to room silencing effect of a ceiling system.
  • this silencing effect will be influenced by the sound reducing effect of the ceiling plates used.
  • Figure 5 schematically indicates the silencer element in the space above the partition wall.
  • relatively high quality ceiling plates are use, wherein the ceiling plates produce a relatively high silencing.
  • the silencing effect of the silencer element is measured with the silencer element arranged in three different heights:
  • the height in which the silencer element is arranged in within the space is non-essential.
  • the graph of figure 6 shows the silencing efficiency of a silencer element with density of 80 kg/m 3 arranged with its centre substantially above the centre of the partition wall.
  • a standard ceiling plate is used.
  • Such standard ceiling plates have a sound reducing effect of approximately 18 dB.
  • the silencing effect in DncW can be read as a function of the thickness of the silencer element along the horizontal axis. From the graph, it is clear that the silencing effect of the suspended ceiling without a silencer element according to the present invention results in a sound reduction of abt. 17 dB (DncW).
  • a sound reducing effect of approximately 30 dB can be achieved with a silencer element having a thickness of 300 mm, i.e. the same sound reducing effect as when using expensive wetfelt ceiling plates, as stated in the introduction.
  • a sound reducing effect of approximately 30 dB will normally be enough to elliminate problems with sound from room to room in relatively quiet buildings like offices, hospitals etc. Comparing this with providing a silencer element of 600 mm, i.e. closing the entire space a silencing effect of 46 dB (DncW) is achieved.
  • the effect of filling only 10% of the space with a silencer element is an increase of silencing effect of abt. 6 dB (DncW), while filling the entire space results in an increase in the overall silencing effect of abt. 29 dB (DncW).
  • the graph of figure 7 shows the silencing efficiency of a silencer element at different positions in the space above the suspended ceiling, as with Fig. 5 using ceiling plates with high sound reducing effect.
  • the silencing effect in dB (DncW) can be read as a function of the position of the silencer element with respect to the partition wall.
  • tests number 1 & 5 resulting in silencing of the room to room transferred sound of abt. 51 dB (DncW), wherein tests number 2 & 4 results in abt. 5 % increase in sound reduction and test number 3 results in about 3.5 % increase in sound reduction.
  • the graph of figure 8 shows the room to room silencing effect as a function of the width of the silencer element. Again ceiling plates with high sound reducing effect of approximately 48 dB was used.
  • the width of the silencer element is defined as the direction substantially perpendicular to the face of the partition wall. Three tests have been carried out with;
  • the width of the silencer element is of importance, however increasing the length from 600 mm to 1,200 mm show only limited improvement in silencing of the room to room transferred sound.
  • the skilled person will realize that a silencer element could be made up as a plurality of smaller elements installed adjacent to or on top of each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
EP09154779A 2009-03-10 2009-03-10 Salle de bâtiment Withdrawn EP2228500A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09154779A EP2228500A1 (fr) 2009-03-10 2009-03-10 Salle de bâtiment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09154779A EP2228500A1 (fr) 2009-03-10 2009-03-10 Salle de bâtiment

Publications (1)

Publication Number Publication Date
EP2228500A1 true EP2228500A1 (fr) 2010-09-15

Family

ID=40902705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09154779A Withdrawn EP2228500A1 (fr) 2009-03-10 2009-03-10 Salle de bâtiment

Country Status (1)

Country Link
EP (1) EP2228500A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017207389A1 (fr) 2016-06-03 2017-12-07 Etex Building Performance International Sas Jonction de paroi de séparation
RU2678293C1 (ru) * 2018-02-19 2019-01-24 Ооо Фирма "Вефт" Монолитная звукоизоляционная стеновая конструкция

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941055U (de) * 1965-07-26 1966-06-23 Charles Zwickert Vorrichtung zur befestigung einer zwischendecke.
DE1709493A1 (de) * 1967-08-29 1976-08-12 Kurt Mechel Deckenplatte fuer abgehaengte unterdecken
NL7612340A (nl) * 1975-11-11 1977-05-13 Armstrong Cork Co Achterwaartse onderdrukking van de geluidsvoort- planting voor onderplafonds van gebouwen.
EP0475486A1 (fr) 1990-08-17 1992-03-18 Rockwool Lapinus B.V. Couverture isolant acoustiquement et son procédé de fabrication
JPH10227083A (ja) 1997-02-18 1998-08-25 Shimizu Corp 天井裏遮音構造及び床下遮音材
NL1006145C2 (nl) 1997-05-28 1998-12-01 Rockwool Rockfon B V Geluidsisolerende plaatstructuur.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1941055U (de) * 1965-07-26 1966-06-23 Charles Zwickert Vorrichtung zur befestigung einer zwischendecke.
DE1709493A1 (de) * 1967-08-29 1976-08-12 Kurt Mechel Deckenplatte fuer abgehaengte unterdecken
NL7612340A (nl) * 1975-11-11 1977-05-13 Armstrong Cork Co Achterwaartse onderdrukking van de geluidsvoort- planting voor onderplafonds van gebouwen.
EP0475486A1 (fr) 1990-08-17 1992-03-18 Rockwool Lapinus B.V. Couverture isolant acoustiquement et son procédé de fabrication
JPH10227083A (ja) 1997-02-18 1998-08-25 Shimizu Corp 天井裏遮音構造及び床下遮音材
NL1006145C2 (nl) 1997-05-28 1998-12-01 Rockwool Rockfon B V Geluidsisolerende plaatstructuur.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017207389A1 (fr) 2016-06-03 2017-12-07 Etex Building Performance International Sas Jonction de paroi de séparation
RU2678293C1 (ru) * 2018-02-19 2019-01-24 Ооо Фирма "Вефт" Монолитная звукоизоляционная стеновая конструкция

Similar Documents

Publication Publication Date Title
CN1074492C (zh) 吊顶
CN105803965A (zh) 一种宽频带吸声单元板
US4228624A (en) Heat-sound insulating wall
CA1091885A (fr) Mur isolant
KR20160098510A (ko) 흡음 패널 및 방음벽 설비
CN205529956U (zh) 一种宽频带吸声单元板
EP2228500A1 (fr) Salle de bâtiment
KR200489664Y1 (ko) 건축물의 개방부 차폐판
EP2116661A1 (fr) Plafond suspendu avec plaques de plafond en 3 couches
KR20100001719U (ko) 층간소음차단용 소음 방지 조립체
CN211775050U (zh) 一种塑料墙板
EP2975188B1 (fr) Dalle de plafond, plafond suspendu comprenant une telle dalle de plafond et procédé de fabrication de celle-ci
CN211548895U (zh) 一种可以阻隔建筑结构传声的隔音房
CN211616866U (zh) 一种周期加筋复合结构波纹夹层板
KR100629309B1 (ko) 액체용기에 의한 진동소음 방지구조
CN213626237U (zh) 一种具有隔音功效的预制叠合板
CN215166855U (zh) 板式钢结构模块化建筑墙体模块
JP2001032219A (ja) 防音壁
KR102536920B1 (ko) 진공단열재를 이용한 층간소음 방지패널
CN217053880U (zh) 一种alc墙体半嵌入式消火栓箱连接结构
US20100293878A1 (en) Floor assembly as well as a section suitable for such a floor assembly
KR101136031B1 (ko) 방음벽용 흡음 패널 및 이를 구비한 방음벽
GB2228954A (en) Ceiling panels
CN204126206U (zh) 减振地板和采用减振地板的多功能声学房间结构
KR200403893Y1 (ko) 건축용 복합패널의 충격음 저감 지지대

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

AKY No designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: R108

Effective date: 20110419

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110316