TNO report MON-RPT-033-DTS

Transcription

1 Stieltjesweg 1 PO BOX AD Delft Telephone Fax Info-IenT@tno.nl TNO report MON-RPT-033-DTS Airborne sound insulation of the SGG Systems Clip-in Stadip Silence 1739 full glass wall with and without door SGG Systems Clip-in Door 1337 Date 2 June 2008 Author(s) F.J.W. Biegstraaten Client - Interior Glass Solutions FAO Mr G. Roelofsen Spaceshuttle ML Amersfoort Project number / Number of pages 14 (including appendices) Number of appendices 1 All rights reserved. No part of this report may be reproduced and/or published by means of printing, photocopying, microfilm or any other means whatsoever, without the prior written permission of TNO. If this report was commissioned, please refer to the Terms and Conditions for TNO research assignments or to the relevant agreement concluded between the contracting parties for more information on the rights and obligations of the client and the contractor. Submitting the TNO report for inspection to parties who have a direct interest is permitted TNO

2 TNO report MON-RPT-033-DTS June /14 Table of Contents 1 Introduction Measuring procedure Measuring method Equipment used Accuracy of measurement Measurement results Signature... 7 Appendix/appendices A Relevant standards

3 TNO report MON-RPT-033-DTS June /14 1 Introduction At the request of Interior Glass Solutions, the airborne insulation of the sealant-free SGG Systems Clip-in Stadip Silence 1739 interior glass wall has been determined, In addition, the airborne sound insulation of the same interior wall with door, SGG Systems Clip-in Silence Door 1337 has been determined. The wall without door consists of five 88.2 laminated glass panels with a width of 73.3 cm. The wall with door consists of three 88.2 laminated glass panels with a width of 73.3 cm, one 88.2 laminated glass panel with a width of 57.2 cm and the 90 cm wide toughened 66.2 laminated door. In order to counterbalance the unevenness of the test opening, the wall was placed in a wooden frame made of 25 mm multiplex. The glass panels were mounted in aluminium U profiles. In order to prevent sound leakage, the connection of the wooden frame to the measurement opening was sealed off all around on both sides with polyurethane foam and aluminium. The connection between the glass panels and the wooden frame consisted of an aluminium SGG Click profile. The connection between the glass panels consisted of a plastic profile. The figures on pages 9 and 10 show the installation of the walls in the test opening. The research was conducted on 23 April 2008 in the special measuring chambers of TNO in Delft, where the structure was placed in the test opening for walls between the insulation measuring areas 1 and 2 (see page 8). The pictures below show the incorporated walls. The measurements were carried out and processed in accordance with the standard NEN-EN-ISO 140-3:1996. The measurement results are presented in this report.

4 TNO report MON-RPT-033-DTS June /14 2 Measuring procedure 2.1 Measuring method The sound insulation of walls is measured in accordance with the requirements provided in the Dutch standard, NEN-EN-ISO 140-3:1996: "Laboratory measurement of the sound insulation of structural elements". The sound insulation (R) is calculated according to the formula R = L 1 L g S/A in which: R = airborne sound insulation in db; L1 = sound pressure level in the transmission room in db compared to 20 μpa; L2 = sound pressure level in the transmission room in db compared to 20 μpa; S = surface area of the partition structure in m2; A = the equivalent in sound absorption surface in the transmission room in m2. In the transmission room, "white" noise is produced using an amplifier/active speaker combination. In the transmission and receiving room, continually rotating microphones are installed (rotation time 64 s). Both signals are simultaneously integrated and analysed over this period of time with the help of a dual channel real-time frequency analyser type 2133 manufactured by Bruël & Kjær. The results recorded on disc by the analyser are further processed with a specific editing program on a Personal Computer. The equivalent in sound absorption surface in the receiving room (A) is determined with Sabine s reverberation equation: A = 0,16 V/T in which: V = volume of the room in m3; T = reverberation time in s. Reverberation time is measured with pulses of broadband noise, the resonance of which is sampled and processed in the results using the same analyser. As prescribed in the above-mentioned standard, the measurements are performed with two source positions; the final result is the mean of these two measurements.

5 TNO report MON-RPT-033-DTS June / Equipment used The equipment used for the measurements is listed in the table below: Device Manufacturer Type Serial No TNO No sound level Bruël & Kjær calibrator condenser Bruël & Kjær microphone electret Bruël & Kjær /1 microphone preamplifier Bruël & Kjær A07080/1 preamplifier Bruël & Kjær A07080/1 microphone Bruël & Kjær power supply microphone Bruël & Kjær power supply dual channel Bruël & Kjær analyser sound source Bruël & Kjær sound source Bruël & Kjær 4296 dual channel Quad amplifier 2x100W single channel Quad 50E amplifier 1x50W microphone rotor Bruël & Kjær microphone rotor Bruël & Kjær loudspeakers Philips AD12202 PC Hexar HPII350M Intercepting amplifier Monacor MAB30AK 2.3 Accuracy of measurement The accuracy of measurements of structural acoustics is expressed numerically in terms of repeatability and reproducibility. Repeatability is the maximum expected difference (95% reliability) between two measurements in one object, in the same laboratory and, in essence, the same measuring installation and the same measuring system. Reproducibility is the maximum expected difference (95% reliability) between two measurements in one object in different laboratories, each with its own measuring installation and measuring system. ISO imposes requirements with regard to these two quantities (see ISO annex A). Single numerical designations require a repeatability of 1 db and a reproducibility of 3 db. Various national and international comparative studies show that the measuring method as described in NEN-EN-ISO and as performed at TNO Delft complies with the repeatability requirements. The aforementioned studies also indicate that the required reproducibility between the various (European) laboratories, including TNO Delft, is complied with as well, albeit only marginally in the case of some types of measuring objects.

6 TNO report MON-RPT-033-DTS June /14 3 Measuring results The results of the airborne sound insulation measurements are listed on pages 10 and 11. In the graphs, the airborne sound insulation is presented as a function of the centre frequency of 1/3 octave bands. The 1/1 octave band values are indicated with a circle (o). The measuring values are also listed in a table next to the graph. Under the graphs, a number of single numerical designations are summarised, which are determined in accordance with NEN-EN-ISO 717-1:1997. A more detailed explanation of these single numerical designations is given in appendix A. In practice, when a wall is used as a partition between two areas, not only is the sound transmission via the wall - as measured in the laboratory now - important, but other transmission paths such as circulation sound via a corridor or ventilation system and transmission via flanking structures such as floors and interior walls play a part as well. As a result, the soundproofing that can actually be realised between two areas strongly depends on the situation and the implementation (see also NPR 5079).

7 TNO report MON-RPT-033-DTS June /14 4 Signature Delft, 10 June 2008 TNO Industry and Technology P. Hendriksen F.J.W. Biegstraaten Head of Department Author

8 TNO report MON-RPT-033-DTS June /14 INSULATION MEASURING CHAMBERS AT TNO DELFT The insulation measuring chambers of TNO in Delft form a block of four rooms, each with a volume of approximately 100 m 3. The rooms themselves are structurally separated. The rooms have a hard-finished floor and hard-finished walls, of which at least two are not mutually placed in parallel. In each room, 4 diffusers are suspended with a total unilateral surface area of 5.7 m 2. Between measuring chambers 1 and 2 there is a test opening for wall structures of 3.75 x 2.65 m2; between measuring chambers 3 and 4 there is a double support structure with a test opening for glass measurements of 1,500 x 1,250 m 2. Between measuring chambers 1 and 4 there is a standard concrete floor of 100 mm (approximately 260 kg/m 2 ), and between measuring chambers 2 and 3 there is a test opening for floor structures of 3.15 x 3.15 m2. The insulation measuring areas comply with ISO 140-1:1997. The test opening for glass complies with ISO 140-3;1995 and the standard concrete floor complies with ISO 140-8:1997. The measuring procedure with 2 speaker positions and a rotating microphone complies with ISO 140-3:1995 and the measuring procedure with four positions for the tapping machine and a rotating microphone complies with ISO 140:6:1998. This ensures compliance with the requirements for repeatability and reproducibility of ISO 140-2:1991. EGE

9 TNO report MON-RPT-033-DTS June /14 Bilingual key glasverdeling voor sgg SYTEMS CLIP IN SILENCE 1739 met sgg CLICK profielen glass distribution for sgg SYTEMS CLIP IN SILENCE 1739 with sgg CLICK profiles inw. maat mplx frame 3671 internal size mplx frame 3671 uitw. maat mplx frame 3721 external size mplx frame 3721 uitw. maat mplx frame 2625 external size mplx frame 2625 inw. maat mplx frame 2575 internal size mplx frame 2575

10 TNO report MON-RPT-033-DTS June /14 Bilingual key glasverdeling voor sgg SYTEMS CLIP IN SILENCE 1739 met sgg CLICK en een ssg SYSTEMS CLIP IN SILENCE DOOR 1337 glass distribution for sgg SYSTEMS CLIP IN SILENCE 1739 with sgg CLICK and an ssg SYSTEMS CLIP IN SILENCE DOOR 1337 inw. maat mplx frame 3671 internal size mplx frame 3671 uitw. maat mplx frame 3721 external size mplx frame 3721 uitw. maat mplx frame 2625 external size mplx frame 2625 inw. maat mplx frame 2575 internal size mplx frame 2575

11 TNO report MON-RPT-033-DTS June /14 AIRBORNE SOUND INSULATION WALL STRUCTURE Laboratory measurements according to NEN-EN-ISO Client : Saint-Gobain - Interior Glass Solutions Product : SGG Clip-in Stadip Silence 1739 Project number : /01.21 Test area : TNO Measuring areas room 1-2 Monitored by : SGG-IGS Test date : Description of object : SGG Systems Clip-in Silence 1739 full glass wall in SGG Click click profile Composition of package: 88.2 laminated with silence film Mass : 40 kg/m2 Volume transmission room : 107 m3 Surface area : 10 m2 Volume receiving room : 110 m3 Bilingual key TABLE Frequentie (Hz) Frequency (Hz) GRAPH Luchtgeluidisolatie Airborne sound insulation verschoven ref. curve

12 TNO report MON-RPT-033-DTS June /14 shifted ref. curve Frequentie (Hz) Frequency (Hz) FORMULA Eéngetalsaanduiding volgens NEN-EN-ISO Single numerical designation according to NEN-EN-ISO 717-1

13 TNO report MON-RPT-033-DTS June /14 TNO report MON-RPT-033-DTS June / 12 AIRBORNE SOUND INSULATION WALL STRUCTURE Laboratory measurements according to NEN-EN-ISO Client : Saint-Gobain Interior Glass Solutions Product : full glass wall with door Project number : /01.21 Test area : TNO Measuring areas room 1-2 Assembled by : SGG-IGS Test date : Description of object : SGG Systems Clip-in Silence Door 1337 Composition of package : toughened 66.2 laminated with silence film Mass : 38 kg/m2 Volume transmission area : 107 m3 Surface area : 10 m2 Volume receiving area : 110 m3 Bilingual key TABLE Frequentie (Hz) Frequency (Hz)

14 TNO report MON-RPT-033-DTS June /14 GRAPH Luchtgeluidisolatie Airborne sound insulation verschoven ref. curve shifted ref. curve Frequentie (Hz) Frequency (Hz) FORMULA Eéngetalsaanduiding volgens NEN-EN-ISO Single numerical designation according to NEN-EN-ISO 717-1

15 TNO report MON-RPT-033-DTS June 2008 Appendix A 1/2 A Related standards The acoustic performance of structural elements is determined in the form of normalised measurement values based on international standards (ISO 140) and often expressed in one single figure in accordance with national (NEN 5079, DIN etc.) and international (ISO 717) standards. Since 2000, European standards stipulating this have come into force (EN-ISO 140 and EN-ISO 717); these European standards have been adopted by all European countries as a national standard. In the Netherlands, all parts of the standard for laboratory measurements have been adopted (NEN-EN-ISO 140); the standard for determining the single numerical designation has been adopted as well (NEN-EN-ISO 717:1997). The use and application of the latter standard is further explained by NPR 5079:1999. The adjustments in the series of measuring standards pertain, in particular, to the tightening up of several points within the measuring procedure in order to assist reproducibility, however no fundamental changes have been made. It is recommended, however, to expand the frequency range to lower frequency bands (up to and including 50 Hz 1/3 octave band). As the measurements with the lower frequencies are less reliable, these results must as yet be regarded as a global indication. The change in the way the measured performance is expressed in one single figure is much greater at first sight. The way in which the acoustic performance of structural elements is expressed is a combination of two different systems. Product performance must always be expressed according to both systems, so as to be able to provide full information in the prescribed way. As a reference, the originally weighted quantity is always expressed in accordance with the old ISO 717 with spectrum adaptation terms C, which indicate the extent to which the A-weighted quantity deviates from this for a certain reference spectrum. For the various acoustic properties this is indicated as follows. airborne sound insulation of structural elements, measured in accordance with NEN-EN-ISO 140-3: Rw (C; Ctr), for example Rw (C; Ctr) = 52 (-1; -5) airborne sound insulation of small elements, measured in accordance with NEN-EN-ISO : Dne;w (C; Ctr), for example Dne;w (C; Ctr) = 34 (-2; -7) contact sound insulation of floors, measured in accordance with NEN-EN-ISO 140-6: Ln;w (CI), for example Ln;w (CI) = 65 (-9) improvement of contact sound insulation through floor finish or floor covering, measured in accordance with NENEN-ISO 140-8: Lw ; Llin, for example Lw ; Llin = 18; 8 Note: alternatively, Lw (CI ) can be used as well The frequency range considered in these spectrum adaptation terms concerns the third octave bands of 100 Hz, up to and including 2500 Hz (contact sound) or 3150 Hz (airborne sound). In addition, NEN-EN-ISO 717 offers the opportunity to involve a broader frequency range in the single numerical designation for information To this end, spectrum adaptation terms may be provided additionally, in which lower frequency bands (up to and including 50 Hz) and/or higher frequency bands (up to and including 5000 Hz) have also been included. These spectrum adaptation terms can also be used to determine an A- weighted quantity for the relevant frequency area based on the weighted quantity.

16 TNO report MON-RPT-033-DTS June /14 When applying the data, it is possible to opt for either system (at a national level). In the Netherlands, this choice was made and incorporated in the new standard NEN 1070:1999 Sound insulation in buildings. It was decided to make use of the A-weighted system with reference spectra for that purpose. While the calculation method and naming of the quantities changed drastically in most cases as a result, the actual frequency weighting largely remained similar. As a result, there tend to be transparent relationships between the 'old' and the 'new' quantities (within ±1 db(a)). The quantities that are relevant to the Dutch situation and the existing relationships with the quantities used up to now are as follows: airborne sound insulation for structural elements, up to now Ilu-lab or RA,verkeer: A-weighted airborne sound insulation for typical environmental sound RA of structural elements: RA = Rw + C Ilu-lab + 51 A-weighted airborne sound insulation for typical exterior sound RAtr of structural elements: RAtr = Rw + Ctr RA, road traffic A-weighted sound level difference for typical environmental sound Dne;A of small structural elements: Dne;A = Dne;w + C A-weighted sound level difference for typical exterior sound Dne;Atr of small structural elements: Dne;Atr= Dne;w + Ctr Dne;A (road traffic) contact sound insulation, up to now Ico-lab or improvement in Ico-lab (also Ico-lab): A-weighted standardised contact sound pressure level for typical contact sound Ln;A of structural elements: Ln;A = Ln;w + CI 59 - Ico-lab A-weighted contact sound insulation-improvement for typical contact sound Llin of floor finishes: Llin = Lw + CI Ico-lab NPR 5079:1999 also explains the nature of the relationship between product performance expressed in this new way and performance in buildings expressed in a corresponding manner, as used in NEN 1070:1999. Practical measurements according to NEN 5077 are assumed here, the 2006 version of which now refers to the relevant sections of ENISO 140, and also determines the single numerical designations in accordance with NEN-EN-ISO 717. It is expected that the Building Decree will also use these European single numerical designations; for the time being, the Ilu;k and Ico of the Building Decree are derived from these designations via fixed relationships. These practical measurement standards are explained in more detail in NPR 5097:2006.