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

2. 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.

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

4. 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.

5. 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.

6. 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.

7. 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

8. 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.

9. Index of sound insulation of partition elements between two premises

10. 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.

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

12. 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.

13. 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.

14. 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.

15. 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.

16. 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.

17. 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.

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

19. Example distribution and kind of partition elementsДА
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.

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

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