Upload
claribel-nelson
View
224
Download
3
Tags:
Embed Size (px)
Citation preview
Propagation of sound in residential buildings
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Content
1.Basics for outdoor propagation2.Indoor propagation sources.3.In detail indoor soundproofing techniques4. Requirements and regulations5. Example
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Map of noise pollution in Sofia city
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
External sources of noise
La,eq = 90 dB La,eq = 77 dB
La,eq = 85 dB La,eq = 84 dB
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Basic rules for position of buildings near to noise source
Rooms orientationOrientation of the premises
Bedroom premises are orientated in direction opposite to the sound sources
NO
YES
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Basic rules for external buildings elements near to noise source
Solidrailings
Sound absorbing ceiling
Maximalshiftedwindows
Transparentbarriersin lowfloors
High index ofSound insulation of the facade elements
NO
YES
Traffic
Traffic
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Internal sources of noise
Lp = 76 dB
Lp = 99 dB
Lp = 71 dB
Lp = 71 dB Lp = 68 dB
Lp = 94 dB Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Ways of propagation of sound in buildings
Direct sound transition
Flanking ways of sound transmission
Sound transmittedby installationopenings between floors
Standard describing the methodology for calculation of bypass roads: EN 12354
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Index of sound insulation of partition elements between two premises
Index of sound insulation of partition elements between two premises with elastic separated elements
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
The sound pressure in receiver room with loud speech
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Application of sound reduction system to direct element
Partition element from aerated concrete blocks with total thickness = 135 mm
The noise reduction system with thickness 72.5 mm :-50 mm air gap filled with 40 mm mineral wool-10 mm gypsum-faser board-12.5 mm gypsum board-Rubber hangers-Metal construction
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
The sound pressure in receiving room with loud speech
L2 = 41.2 dB(A)
Adding of sound reducing system to partition element d of side Of the reception premise
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
The sound pressure in reception premise with loud speech
L2 = 39.9 dB(A)
Adding of sound reduction system to partition element d, f1 and f2 from sideof receiving room
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Adding of sound reduction system to horizontal elements
Reinforced concrete plate with coat 150 mm
Sound reducing system with thickness: 72.5 mm -50 mm air gap filled with 40 mm mineral wool-10 mm gypsum -phaser board-12.5 mm gypsum board-Rubber hangers-Metal standers construction
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Sound pressure in receiving room with loud speech
L2 = 32.7 dB(A)
Adding of sound reducing system to partition element d, f1, f2, f3 и f4 from sideof reception premise
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Sound pressure in reception premise with loud speaking
L2 = 38 dB(A)
Partition wall d from dense ceramic brick with total thickness 260 mm
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
инж. Цветан Недков , УАСГ София 2014 г.
Regulations requirements for permissible sound pressure
инж. Цветан Недков , УАСГ София 2014 г.
Example distribution and kind of partition elements
СпалняДетска стая
АнтреБаня
Кухня
Дневна
Баня
Кухня
Кухня
Дневна
Баня
Спалня
Дневна
Баня
НЕ
ДА
Dense ceramic brick 12/25 sm
Aerocrete brick / Gypsum wall12 / 20 / 25 sm
Hollow ceramic brick / Termo insulation 25 / 38 см
Lining tape under walls
Антре
Minimal requirements for insulation of partition elements
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.
Thank you for your attention!
Tsvetan Nedkov, Ivaylo HristevUACG 2014 г.