01

Acoustics - Laboratory measurement of sound insulation of building elements

Tipo: Test standard

Standard: UNI EN ISO 10140-1:2016 UNI EN ISO 10140-2:2010 UNI EN ISO 10140-4:2010 UNI EN ISO 717-1:2013

Clienti:

The sound insulation tests in our sector are carried out according to the following standards:
  • UNI EN ISO 10140-1:2016 Acoustics - Laboratory measurement of sound insulation of building elements Application rules for specific products
  • UNI EN ISO 10140-2:2010 Acoustics - Laboratory measurement of sound insulation of building elements - Part 2: Measurement of airborne sound insulation.
  • UNI EN ISO 10140-4:2010 Acoustics - Laboratory measurement of sound insulation of building elements Measurement procedures and requirements
  • UNI EN ISO 717-1:2013 Acoustics – Acoustic insulation verification in buildings and in building elements Part 1: Airborne sound insulation.
THE TEST
These standards are used to test products in acoustic chambers consisting of an emitting and a receiving chamber. Between the two, a partition septum is created that does not contribute to the soundproofing of the product. The product to be tested is placed in a special compartment and the difference in levels between the emitting and receiving chamber is measured and a series of calculations are made according to standard. The result is Rw: the index of evaluation of the soundproofing power of the partition measured in the laboratoryor obtained by calculation (without lateral transmissions) which expresses the value in decibels of the reference curve at 500 Hzafter curve displacement according to the method specified in ISO717.
Terminology
Soundproofing power of an element. Indicates the difference in sound level that the partition is able to maintain between a disturbing environment and a receiving environment under controlled laboratory conditions. Rw = laboratory measured R’w = measured on site Decibel = unit of measurement, on a logarithmic basis, to measure differences. Normally the soundproofing power of an element is expressed as, for example, Rw 42 (-1;-3) dB. The values in parentheses are the terms of spectrum adaptation (C, Ctr), introduced to correct the value of the evaluation index when it refers to a practical situation where there is a noise source attributable to pink noise(C) used to describe indoor noise or urban traffic noise(Ctr). Consequently, the result of an assessment of the sound insulation index can be expressed, for example, as Rw = 42 (-1, -3) dB, which indicates that the object under consideration has a basic performance of 42 dB; if affected by pink noise the sound insulation performance becomes 41 dB, while if subjected to traffic noise it will have an insulation equivalent to 39 dB.
DIMENSIONAL EXTENSIONS
For Italy the extensions with respect to the sample tested are taken from the UNI/TR 11469regulation The measured value is maintained up to +50% of the window area. Increasing from 50% to 100% of AREA, decreases by 1 dB From 100% to 150% -2 Over 150% -3.
CASE STUDIES
In special case studies, it is also possible to perform acoustic intensimetries to visually understand where an element has leaks and to evaluate the impact of construction changes.
THE CHEMOLLI FIRE CONTRIBUTION
When it comes to testing, we provide our experience and our KNOW-HOW. Having always done this type of activity, as specialists, we offer you complete advice during all the laboratory experimentation phases, from design to documentation of results. THE METHOD Listening is the most important phase of our interaction: we want you to develop a product that is the sum of your identity and your needs. First of all, we'll try to understand your real needs, the channels and the markets you want to measure yourself on. Then we will show you how the testing and certification process takes place: we need to deal with you, to fully grasp your point of view. Then, we concert a proposal that respects - compatibly with the required performances - your product lines, your production lines and, as far as possible, the potential economies of scale by using products and methodologies already consolidated in your company. EMPATHY Beyond the opportunities, which we will show you, we will then advise you what we would do, in your shoes. We advise with our experience on what, how and where to test. In which laboratory should you test? In the one that best suits your needs! THE PROJECT Once the key is turned, we prepare a project that is exhaustive of all the details. Which materials and components to use, an important part of our dialogue on which we can best advise you. In addition to this, a cost sheet and a forecast of weights, to allow you to check if your goals will be achieved. Using the best practices in the sector, we are convinced of this. ATYPICAL CONSULTANTS: WE TAKE CARE OF THE TESTING ACTIVITY A consultant gives advice, then lets the client put it into practice. We are not like this: we take off tie and put on our work clothes when needed. Once the production of the samples has been launched, we are present during the gluing of the doors, we offer support during processing and hardware installation, we proceed with our technicians to install the samples in the laboratory and we are physically present at the test. We manage the post-test documentation review phase, we illustrate the documentation and remain available for all issues related to results management.
IN DEPTH
02

Classification for Rating Sound Insulation - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements

Tipo: Test standard

Standard: ASTM E90-09, ASTM E413-10, ASTM E1332-16, ASTM E 2235-04

Clienti:

Acoustic door tests according to American STC: Reverberation chamber test method for determining sound insulation.
STANDARDS USED
The standards used to determine the STC value are: ASTM E90-09 "Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements" ASTM E413-10 "Classification for Rating Sound Insulation" ASTM E1332-16 "Standard Classification for Rating Outdoor-Indoor Sound Attenuation" ASTM E 2235-04 "Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods"
THE CALCULATION
The calculation of the STC (Sound Transmission Class)index, according to the E413standard, is based on the values calculated for each one-third octave frequency band from 125 Hz to 4000 Hz. The experimental curve is evaluated and compared with the reference curve. Then the curve comparison method is applied up to the point where the sum of the unfavourable differences between the relative curve values are on the reference curve less than or equal to 32 dB and the maximum deficiency at any one frequency does not exceed 8 dB. The single number rating is given by the value of the reference contour shifted to 500 Hz.
TL ED OITC
The classification, according to the E1332standard, requires the measurement of transmission loss (TL - Transmission Loss) in the third octave band from 80 to 4000 Hzfor the determination of the OITC (Outdoor-Indoor Transmission Class) index. The same header port for Rw and STC could give similar results, although sometimes American results are slightly more "optimistic" than European ones. By changing the band and method, the results may vary.
THE CHEMOLLI FIRE CONTRIBUTION
When it comes to testing, we provide our experience and our KNOW-HOW. Having always done this type of activity, as specialists, we offer you complete advice during all the laboratory experimentation phases, from design to documentation of results. THE METHOD Listening is the most important phase of our interaction: we want you to develop a product that is the sum of your identity and your needs. First of all, we'll try to understand your real needs, the channels and the markets you want to measure yourself on. Then we will show you how the testing and certification process takes place: we need to deal with you, to fully grasp your point of view. Then, we concert a proposal that respects - compatibly with the required performances - your product lines, your production lines and, as far as possible, the potential economies of scale by using products and methodologies already consolidated in your company. EMPATHY Beyond the opportunities, which we will show you, we will then advise you what we would do, in your shoes. We advise with our experience on what, how and where to test. In which laboratory should you test? In the one that best suits your needs! THE PROJECT Once the key is turned, we prepare a project that is exhaustive of all the details. Which materials and components to use, an important part of our dialogue on which we can best advise you. In addition to this, a cost sheet and a forecast of weights, to allow you to check if your goals will be achieved. Using the best practices in the sector, we are convinced of this. ATYPICAL CONSULTANTS: WE TAKE CARE OF THE TESTING ACTIVITY A consultant gives advice, then lets the client put it into practice. We are not like this: we take off tie and put on our work clothes when needed. Once the production of the samples has been launched, we are present during the gluing of the doors, we offer support during processing and hardware installation, we proceed with our technicians to install the samples in the laboratory and we are physically present at the test. We manage the post-test documentation review phase, we illustrate the documentation and remain available for all issues related to results management.
01

Acoustics - Laboratory measurement of sound insulation of building elements

Tipo: Test standard

Standard: UNI EN ISO 10140-1:2016 UNI EN ISO 10140-2:2010 UNI EN ISO 10140-4:2010 UNI EN ISO 717-1:2013

Clienti:

The sound insulation tests in our sector are carried out according to the following standards:
  • UNI EN ISO 10140-1:2016 Acoustics - Laboratory measurement of sound insulation of building elements Application rules for specific products
  • UNI EN ISO 10140-2:2010 Acoustics - Laboratory measurement of sound insulation of building elements - Part 2: Measurement of airborne sound insulation.
  • UNI EN ISO 10140-4:2010 Acoustics - Laboratory measurement of sound insulation of building elements Measurement procedures and requirements
  • UNI EN ISO 717-1:2013 Acoustics – Acoustic insulation verification in buildings and in building elements Part 1: Airborne sound insulation.
THE TEST
These standards are used to test products in acoustic chambers consisting of an emitting and a receiving chamber. Between the two, a partition septum is created that does not contribute to the soundproofing of the product. The product to be tested is placed in a special compartment and the difference in levels between the emitting and receiving chamber is measured and a series of calculations are made according to standard. The result is Rw: the index of evaluation of the soundproofing power of the partition measured in the laboratoryor obtained by calculation (without lateral transmissions) which expresses the value in decibels of the reference curve at 500 Hzafter curve displacement according to the method specified in ISO717.
Terminology
Soundproofing power of an element. Indicates the difference in sound level that the partition is able to maintain between a disturbing environment and a receiving environment under controlled laboratory conditions. Rw = laboratory measured R’w = measured on site Decibel = unit of measurement, on a logarithmic basis, to measure differences. Normally the soundproofing power of an element is expressed as, for example, Rw 42 (-1;-3) dB. The values in parentheses are the terms of spectrum adaptation (C, Ctr), introduced to correct the value of the evaluation index when it refers to a practical situation where there is a noise source attributable to pink noise(C) used to describe indoor noise or urban traffic noise(Ctr). Consequently, the result of an assessment of the sound insulation index can be expressed, for example, as Rw = 42 (-1, -3) dB, which indicates that the object under consideration has a basic performance of 42 dB; if affected by pink noise the sound insulation performance becomes 41 dB, while if subjected to traffic noise it will have an insulation equivalent to 39 dB.
DIMENSIONAL EXTENSIONS
For Italy the extensions with respect to the sample tested are taken from the UNI/TR 11469regulation The measured value is maintained up to +50% of the window area. Increasing from 50% to 100% of AREA, decreases by 1 dB From 100% to 150% -2 Over 150% -3.
CASE STUDIES
In special case studies, it is also possible to perform acoustic intensimetries to visually understand where an element has leaks and to evaluate the impact of construction changes.
THE CHEMOLLI FIRE CONTRIBUTION
When it comes to testing, we provide our experience and our KNOW-HOW. Having always done this type of activity, as specialists, we offer you complete advice during all the laboratory experimentation phases, from design to documentation of results. THE METHOD Listening is the most important phase of our interaction: we want you to develop a product that is the sum of your identity and your needs. First of all, we'll try to understand your real needs, the channels and the markets you want to measure yourself on. Then we will show you how the testing and certification process takes place: we need to deal with you, to fully grasp your point of view. Then, we concert a proposal that respects - compatibly with the required performances - your product lines, your production lines and, as far as possible, the potential economies of scale by using products and methodologies already consolidated in your company. EMPATHY Beyond the opportunities, which we will show you, we will then advise you what we would do, in your shoes. We advise with our experience on what, how and where to test. In which laboratory should you test? In the one that best suits your needs! THE PROJECT Once the key is turned, we prepare a project that is exhaustive of all the details. Which materials and components to use, an important part of our dialogue on which we can best advise you. In addition to this, a cost sheet and a forecast of weights, to allow you to check if your goals will be achieved. Using the best practices in the sector, we are convinced of this. ATYPICAL CONSULTANTS: WE TAKE CARE OF THE TESTING ACTIVITY A consultant gives advice, then lets the client put it into practice. We are not like this: we take off tie and put on our work clothes when needed. Once the production of the samples has been launched, we are present during the gluing of the doors, we offer support during processing and hardware installation, we proceed with our technicians to install the samples in the laboratory and we are physically present at the test. We manage the post-test documentation review phase, we illustrate the documentation and remain available for all issues related to results management.
IN DEPTH
02

Classification for Rating Sound Insulation - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements

Tipo: Test standard

Standard: ASTM E90-09, ASTM E413-10, ASTM E1332-16, ASTM E 2235-04

Clienti:

Acoustic door tests according to American STC: Reverberation chamber test method for determining sound insulation.
STANDARDS USED
The standards used to determine the STC value are: ASTM E90-09 "Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements" ASTM E413-10 "Classification for Rating Sound Insulation" ASTM E1332-16 "Standard Classification for Rating Outdoor-Indoor Sound Attenuation" ASTM E 2235-04 "Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods"
THE CALCULATION
The calculation of the STC (Sound Transmission Class)index, according to the E413standard, is based on the values calculated for each one-third octave frequency band from 125 Hz to 4000 Hz. The experimental curve is evaluated and compared with the reference curve. Then the curve comparison method is applied up to the point where the sum of the unfavourable differences between the relative curve values are on the reference curve less than or equal to 32 dB and the maximum deficiency at any one frequency does not exceed 8 dB. The single number rating is given by the value of the reference contour shifted to 500 Hz.
TL ED OITC
The classification, according to the E1332standard, requires the measurement of transmission loss (TL - Transmission Loss) in the third octave band from 80 to 4000 Hzfor the determination of the OITC (Outdoor-Indoor Transmission Class) index. The same header port for Rw and STC could give similar results, although sometimes American results are slightly more "optimistic" than European ones. By changing the band and method, the results may vary.
THE CHEMOLLI FIRE CONTRIBUTION
When it comes to testing, we provide our experience and our KNOW-HOW. Having always done this type of activity, as specialists, we offer you complete advice during all the laboratory experimentation phases, from design to documentation of results. THE METHOD Listening is the most important phase of our interaction: we want you to develop a product that is the sum of your identity and your needs. First of all, we'll try to understand your real needs, the channels and the markets you want to measure yourself on. Then we will show you how the testing and certification process takes place: we need to deal with you, to fully grasp your point of view. Then, we concert a proposal that respects - compatibly with the required performances - your product lines, your production lines and, as far as possible, the potential economies of scale by using products and methodologies already consolidated in your company. EMPATHY Beyond the opportunities, which we will show you, we will then advise you what we would do, in your shoes. We advise with our experience on what, how and where to test. In which laboratory should you test? In the one that best suits your needs! THE PROJECT Once the key is turned, we prepare a project that is exhaustive of all the details. Which materials and components to use, an important part of our dialogue on which we can best advise you. In addition to this, a cost sheet and a forecast of weights, to allow you to check if your goals will be achieved. Using the best practices in the sector, we are convinced of this. ATYPICAL CONSULTANTS: WE TAKE CARE OF THE TESTING ACTIVITY A consultant gives advice, then lets the client put it into practice. We are not like this: we take off tie and put on our work clothes when needed. Once the production of the samples has been launched, we are present during the gluing of the doors, we offer support during processing and hardware installation, we proceed with our technicians to install the samples in the laboratory and we are physically present at the test. We manage the post-test documentation review phase, we illustrate the documentation and remain available for all issues related to results management.

Ask for information about testing
Sound insulation

Ask for information about testing
Sound insulation