The report explains noise nomenclature, describes tools and mathematical models for reducing noise on engineering projects, and makes recommendations for revising engineering education. The various Federal, State and local regulations related to noise are reviewed. Future construction planning will have to take into account noise control in scheduling and deployment of construction equipment. The Environment Protection Agency's (EPA) document 'Noise from Construction Equipment and Operations, Building Equipment and Home Appliances' (dealing with construction noise), describes a model which predicts noise from various types of construction projects. On the basis of field interviews, EPA calculated "usage factors" for each piece of equipment. An average noise level for each phase of each job was calculated and tabulated. Tables are also presented of the various types of equipment that can be quieted, the degree of quieting and the cost of quieting. Options for compliance open to construction planners are listed. Important aspects of traffic noise are identified: noise levels rise 9 dBA each time the average speed is doubled; for a constant average speed, doubling the number of vehicles per hour increases average noise by 3 dBA; stop and go traffic introduces higher peak levels and often lower averages; smooth but slow traffic has a low average and low peaks. A mathematical model is described which was used to device various methods of decreasing sound emission levels from a mixture of different types of vehicles, different speeds, different volumes and different emission characteristics. Ways of handling problems dealing with traffic noise abatement are outlined. The need is indicated for education of the civil engineer to help him cope with problems of noise control and reduction. Topics that should be included in an elementary acoustics course are listed.

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Filing Info

  • Accession Number: 00260235
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 11 1974 12:00AM