ASI Services

High Quality Services
for all Our Clients

Acoustical Engineering Design and Field Testing

Acoustical Engineering/Design/Consultation

  • Wall Construction (Sound Transmission Class – STC)
  • Floor/Ceiling Construction (STC/Impact Insulation Class – IIC)
  • Interior Acoustics (Reverberation Time – RT60)
  • Mechanical Systems (Noise Criteria – NC/RC)
  • Environmental Noise Impact
  • New Construction/Renovation Acoustical Design Review
  • Construction Site Reviews
  • LEED for Schools and Hospital Consumer Assessment of Health Care Providers and Systems
  • (HCAHPS) consultation

Acoustical Field Testing (ANSI, ASTM, Military, and Project-Specific Requirements)

  • Field Sound Transmission Class/Noise Isolation Class (FSTC/NIC) Testing
    • ASTM E336/413
    • Military Standards DCID/JAFAN 6/9, ICD/ICS 705
  • Impact Insulation Class (IIC) Testing
    • ASTM E989/E2179
  • Reverberation time (RT60) Testing
    • ASTM C423/E336/C1007
  • Noise Criteria (NC/RC) Testing
    • ANSI S12.2/S12.60
  • Environmental Noise Impact
    • FHA, HUD, and State/Local Noise Ordinances

Industrial/Environmental Acoustic Services

Industrial Noise Control Services

  • Workplace Noise Exposure Assessments per OSHA 1910.95, MSHA Part 62
  • Acoustical Engineering Feasibility Studies to meet project-specific acoustical requirements
  • Industrial Noise Abatement Compliance Plans
  • Field Certification Testing for New Equipment Noise Specifications
  • Predictive Noise Mapping services for future facility planning
  • Turnkey design/build capabilities for single source industrial noise control solutions

Environmental Noise Control Services

  • Community Noise Surveys/Local Noise Ordinance Compliance Evaluations
  • Environmental Noise Impact Statements
  • Acoustical Engineering Feasibility Studies to meet project acoustical requirements/ goals
  • Predictive Noise Mapping services for future planning
  • Environmental Noise Abatement Compliance Plans
  • Turnkey design/build capabilities for single source environmental noise control solutions

Program Management Alternatives

Single Source Turnkey Services

Acoustical Systems, Inc. can offer single source turnkey services that include
responsibility for every phase of the project from initial engineering and design, bid
package management (development, circulation, and review), vendor selection, purchase of system components, fabrication oversight, scheduling, and installation services to
ensure the proper system specifications are implemented.

Program Management

Should the owner prefer to manage the material procurement and installation services
internally, Acoustical Systems, Inc. can provide program management services to ensure the proper project specifications are met at all phases of the project. A brief description of the Program Management duties follow:

  1. Responsibilities
    • The program manager will coordinate all interior and exterior activities, submit progress reports as requested, and be responsible for the successful completion of the noise control compliance program.
  2. Duties
    • Review concept drawings with production and maintenance personnel.
    • Prepare the necessary construction drawings for all acoustical fabrication.
    • Review construction drawings with project manager to determine what, if any, production ramifications may result.
    • Make any necessary modifications resulting from the production, maintenance, and project manager input.
    • Determine, along with maintenance personnel, what materials and hardware will be fabricated in-house.
    • Secure final written approval of the construction drawings from production
      personnel.
    • Procure competitive bids on all materials that will be supplied by outside vendors and update ASI contract price if necessary.
    • Along with the purchasing department, select the supplier and provide the
      necessary delivery information to maintenance for installation scheduling.
    • Review approval drawings with the vendor prior to any fabrication.
    • Assist vendor’s installation supervisor to insure a complete material installation.
    • Qualify the noise reduction achieved after installation has been completed and
      present a final report to all parties.

Workplace Noise Exposure Assessment

Dosimetry Method

  • Introduction – The Employee Time-Weighted Average (TWA) will be based on recorded noise exposure data during a full-shift sample. Employee names and/or identification numbers will be listed in the final report.
  • Determination of Sound Levels – Equip selected employees with noise dosimeters for sound data collection prior to the start of the work shift. The dosimeters will be programmed to incorporate the settings specified in OSHA 1910.95 – Occupational Noise Exposure. Each sample will record noise exposure data throughout the shift in incremental samples as well as the ongoing full-shift sample.
  • Noise Exposure Potential Calculations – Remove the dosimeters from the employees at the end of the work shift and download the stored sound level data from the dosimeter to process the results.
  • Reporting – Submit a report that includes the results of the full shift noise dosimetry sampling and the area noise sampling with a color-coded noise contour map.

Job Function Method

  • Introduction – The survey will be task and equipment based, therefore no employee names or identification numbers will be listed in the final report.
  • Center of Area Sound Readings – The areas selected for testing will be divided into grid sectors. Acoustical Systems will record A-Scale maximum, average, and peak production sound levels in the areas. These levels will be used to develop color-coded noise maps.
  • Job Function Analysis – Through observation and supervisor interviews, the noise assessment monitoring groups will be determined. The activity, location, time duration and noise levels of each activity/task will be recorded. The data is then processed to determine the Job Function that represents the group being studied.
  • Determination of Sound Levels – Our engineers will measure the A-weighted maximum, and Production Laverage, and the unweighted peak at each activity/task. In addition, primary noise sources and critical observations will be recorded. The data is typically gathered over a period of three to five cycles of the monitored activity, or a representative duration to record an accurate task sound level.
  • Noise Exposure Potential Calculations – The full-shift noise exposure potential for each employee will be calculated by applying equipment noise sampling data and exposure time factors to noise exposure equations specified in OSHA 1910.95 – Occupational Noise Exposure
  • Reporting – The format and content of the Acoustical Systems reports conform to OSHA guidelines. In addition, the reports will include the location of each set of sound level measurements gathered. This information allows the client to easily audit the data.