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Aircraft Noise and Sound Insulation Fred Pierson Navy East Coast AICUZ Center of Excellence Excellence.

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Presentation on theme: "Aircraft Noise and Sound Insulation Fred Pierson Navy East Coast AICUZ Center of Excellence Excellence."— Presentation transcript:

1 Aircraft Noise and Sound Insulation Fred Pierson Navy East Coast AICUZ Center of Excellence Excellence

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3 RESULTS Reduced take-off weightsReduced take-off weights Quiet hoursQuiet hours Flight track changesFlight track changes Reduction in operationsReduction in operations LitigationLitigation Loss of flying missionLoss of flying mission

4 A ir I nstallations C ompatible U se Z ones

5 The AICUZ Program DefinesDefines –Noise Zones –Accident Potential Zones Recommends Land Use GuidelinesRecommends Land Use Guidelines

6 The AICUZ Program AICUZ is non-bindingAICUZ is non-binding Land use control is the responsibility of local, regional and state governmentsLand use control is the responsibility of local, regional and state governments Building codes w/proper NLR reduces noise impactBuilding codes w/proper NLR reduces noise impact

7 What are the benefits of Sound Insulation? Reduces – –Speech interference – –Sleep disturbance Its energy efficient – –Reduces air infiltration – –Higher R value

8 Aircraft Noise and Sound Insulation Concerns go back to 1960sConcerns go back to 1960s 1967-Development of Sound Insulation methods for use around LAX1967-Development of Sound Insulation methods for use around LAX 1971-Noise Control Act1971-Noise Control Act Late 1980s-DOD and FAA prepared Sound Insulation GuideLate 1980s-DOD and FAA prepared Sound Insulation Guide Publication DOT/FAA/PP Publication DOT/FAA/PP 92-5

9 2005- Navy sponsored update2005- Navy sponsored update Serves as a guide for NLR in residential buildingsServes as a guide for NLR in residential buildings CoversCovers –Building materials and cost –New and existing construction New Sound Insulation Guidelines

10 Mitigating Aircraft Noise Aircraft noise can be disturbingAircraft noise can be disturbing Sound insulation is not Sound eliminationSound insulation is not Sound elimination DNL and the Noise Exposure ZonesDNL and the Noise Exposure Zones

11 24-hour Average Sound Level with a weighting factor for night operations Often used for environmental noise, especially aircraft noise in the U.S. EPA and FAA established an interior goal of 45 DNL 24-hour Average Sound Level with a weighting factor for night operations Often used for environmental noise, especially aircraft noise in the U.S. EPA and FAA established an interior goal of 45 DNL DAY-NIGHT AVERAGE SOUND LEVEL DNL

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13 Noise Zones v. Contours >75 dB DNL DNL <65 DNL 70 DNL 75 DNL dB DNL 65 DNL

14 Changes in Noise Environment result from result from Changes in NOISE SYSTEM Changes in NOISE SYSTEM SOURCE PATH PATH RECEIVER RECEIVER Mitigation

15 Sound Insulation Sources of Noise PathsSources of Noise Paths –Gaps and Cracks –Windows and Doors –Walls and Ceilings –Fireplaces –Air Conditioners –Exhaust fans –Ventilation All building elements must work together in a balanced manner to reduce noise intrusionAll building elements must work together in a balanced manner to reduce noise intrusion

16 Costs Depends on noise zonethe higher the noise level, the greater the costDepends on noise zonethe higher the noise level, the greater the cost Average cost to insulate an existing home near an airport $10K-$50K.Average cost to insulate an existing home near an airport $10K-$50K. –Most modern construction already reduces interior noise by about dB –New home sound insulation is less

17 Model Building Code Appendix D, Noise level reduction Design RequirementsAppendix D, Noise level reduction Design Requirements –For NLR of 25 dB(65-70 DNL)25 dB(65-70 DNL) 30 dB(70-75 DNL)30 dB(70-75 DNL) 35 dB(75-80 DNL)35 dB(75-80 DNL) –Adaptable for: Commercial structuresCommercial structures Civil AirportsCivil Airports

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20 68 dB + 3 dB = 71 dB DNL 25 dB(65-70 DNL) 30 dB(70-75 DNL) 35 dB(75-80 DNL)

21 Questions?


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