Propagation of sound in residential buildings Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Tsvetan Nedkov, Ivaylo Hristev Content 1.Basics for outdoor propagation 2.Indoor propagation sources. 3.In detail indoor soundproofing techniques 4. Requirements and regulations 5. Example Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Map of noise pollution in Sofia city Tsvetan Nedkov, Ivaylo Hristev UACG 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 Hristev UACG 2014 г.

Basic rules for position of buildings near to noise source Orientation of the premises Rooms orientation NO YES Bedroom premises are orientated in direction opposite to the sound sources Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Basic rules for external buildings elements near to noise source Sound absorbing ceiling NO Solid railings Traffic Maximal shifted windows Transparent barriers in low floors YES Traffic High index of Sound insulation of the facade elements Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Internal sources of noise Lp = 71 dB Lp = 76 dB Lp = 71 dB Lp = 68 dB Lp = 99 dB Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г. Lp = 94 dB

Ways of propagation of sound in buildings Standard describing the methodology for calculation of bypass roads: EN 12354 Sound transmitted by installation openings between floors Direct sound transition Flanking ways of sound transmission Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Index of sound insulation of partition elements between two premises

Tsvetan Nedkov, Ivaylo Hristev Index of sound insulation of partition elements between two premises with elastic separated elements Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

The sound pressure in receiver room with loud speech Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Application of sound reduction system to direct element 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 Partition element from aerated concrete blocks with total thickness = 135 mm Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

The sound pressure in receiving room with loud speech Adding of sound reducing system to partition element d of side Of the reception premise L2 = 41.2 dB(A) Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

The sound pressure in reception premise with loud speech Adding of sound reduction system to partition element d, f1 and f2 from side of receiving room L2 = 39.9 dB(A) Tsvetan Nedkov, Ivaylo Hristev UACG 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 Hristev UACG 2014 г.

Sound pressure in receiving room with loud speech Adding of sound reducing system to partition element d, f1, f2, f3 и f4 from side of reception premise L2 = 32.7 dB(A) Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Sound pressure in reception premise with loud speaking Partition wall d from dense ceramic brick with total thickness 260 mm L2 = 38 dB(A) Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Regulations requirements for permissible sound pressure инж. Цветан Недков , УАСГ София 2014 г.

Example distribution and kind of partition elements ДА Баня Детска стая Dense ceramic brick 12/25 sm Спалня Кухня Баня Антре Кухня Aerocrete brick / Gypsum wall 12 / 20 / 25 sm НЕ Антре Дневна Баня Кухня Баня Дневна Hollow ceramic brick / Termo insulation 25 / 38 см Дневна Спалня Lining tape under walls инж. Цветан Недков , УАСГ София 2014 г.

Minimal requirements for insulation of partition elements Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.

Thank you for your attention! Tsvetan Nedkov, Ivaylo Hristev UACG 2014 г.