ASTM E90M Airborne Sound Transmission Testing
The ASTM E90M standard, formally titled "Standard Test Method for Determining Airborne Sound Transmission Loss of Building Partitions," is a critical component in the evaluation and certification of building materials used to mitigate airborne sound transmission. This method ensures that construction elements such as walls, floors, ceilings, and partitions meet specified performance criteria for noise reduction.
This testing procedure involves measuring the sound insulation properties of a partition under controlled conditions in a laboratory setting. The standard defines the equipment requirements, test procedures, specimen preparation, and data analysis necessary to determine the airborne sound transmission loss (STC) values that are essential for compliance with building codes and standards.
The ASTM E90M method is widely recognized for its ability to provide accurate and reliable results under a variety of conditions. It has been adopted by numerous jurisdictions worldwide due to its robustness and consistency in measuring the performance of partition materials against airborne sound transmission.
For specimens, the ASTM E90M requires that test samples are prepared according to specific dimensions and tolerances defined within the standard. Specimens must be free from defects that could affect their performance during testing. The testing setup includes a two-chambered room where one chamber is exposed to noise while the other remains quiet.
The testing process involves measuring the sound pressure level (SPL) in both chambers before and after the specimen is placed between them. The difference in SPLs, known as the sound transmission loss (STL), is then calculated and reported using a specific formula provided by ASTM E90M. This value indicates how effectively the material can block or reduce airborne sound.
ASTM E90M also includes provisions for conducting tests at various frequencies to ensure broad-spectrum performance evaluation. Compliance with this standard ensures that construction elements perform consistently across different noise frequency bands, which is crucial for maintaining effective sound insulation in buildings.
| Frequencies | Minimum STL (STC) |
|---|---|
| 125 Hz | 30 dB |
| 250 Hz | 40 dB |
| 500 Hz | 45 dB |
| 1 kHz | 60 dB |
| 2 kHz | 70 dB |
| 4 kHz | 80 dB |
The data obtained from ASTM E90M testing is essential for architects, engineers, and builders to ensure that their projects comply with local and international noise control regulations. This information helps in selecting the appropriate materials and configurations to achieve desired sound insulation levels.
Benefits
- Compliance Assurance: Ensures compliance with local building codes and international standards, such as ASTM E90M.
- Precision Measurement: Provides precise measurement of airborne sound transmission loss (STC) values.
- Consistency: Offers consistent results across different testing conditions for better quality control.
- Confidence in Performance: Allows stakeholders to have confidence that the selected materials will perform as expected in real-world applications.
The ASTM E90M Airborne Sound Transmission Testing service offers several advantages, including enhanced compliance with regulatory requirements and improved product quality. By ensuring that sound insulation materials meet specified performance criteria, this testing method supports the development of high-quality buildings that effectively manage noise levels.
Industry Applications
The ASTM E90M Airborne Sound Transmission Testing is primarily applicable in various sectors including commercial and residential construction, healthcare facilities, educational institutions, and office environments. Here are some specific applications:
- Commercial Buildings: Ensures that partition materials used in offices, conference rooms, and meeting spaces effectively reduce noise levels.
- Residential Construction: Helps homeowners achieve quiet living spaces by selecting appropriate sound insulation materials for walls and floors.
- Hospitals and Clinics: Provides a controlled environment with minimal noise interference, which is crucial for patient comfort and privacy.
- Schools and Universities: Ensures that classrooms and other learning environments are free from excessive noise, promoting better concentration and learning experiences.
| Industry Sector | Main Application |
|---|---|
| Commercial Buildings | Noise Reduction in Shared Spaces |
| Residential Construction | Quiet Living Spaces |
| Hospitals and Clinics | Controlled Noise Environment |
| Schools and Universities | Better Concentration in Learning Environments |
The ASTM E90M Airborne Sound Transmission Testing is a valuable tool for professionals across these sectors, ensuring that the materials used meet stringent noise control standards.
International Acceptance and Recognition
The ASTM E90M standard has gained widespread acceptance and recognition internationally. Many countries have incorporated this method into their national building codes, ensuring that construction materials meet the same high standards globally.
This international adoption underscores the importance of consistent testing protocols in evaluating airborne sound insulation properties. Laboratories certified to perform ASTM E90M tests are trusted providers of accurate and reliable results, which are crucial for global projects involving multiple jurisdictions.
By adhering to ASTM E90M standards, laboratories ensure that their test results are comparable across different regions, facilitating smoother international trade and collaboration in the construction industry. The standard's robustness and consistency make it a preferred choice for quality assurance and compliance purposes worldwide.
