Impact noise definition

Impact noise means the noise produced by the collision of one mass in motion with a second mass which may be either in motion or at rest.
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Impact noise means a relatively short duration noise generally produced by the striking of two or more objects so as to be heard as a separate distinct noise.
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Impact noise means the sound produced by the impact or collision of one moving object or mass with a second object or mass that is stationary or moving.
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Examples of Impact noise in a sentence

  • Impact noise monitoring was conducted at site boundary of the site office area in Works Area WA2 (NMS3B) respectively.

  • Impact noise monitoring was conducted at site boundary of the site office area in Works Area WA2 (NMS3A) respectively.

  • Impact noise monitoring was undertaken at one location N10a once per week.

  • Impact noise monitoring was conducted for at least once per week during the construction phase of the Project.

  • Impact noise monitoring was undertaken at the EPD-approved alternative station weekly.

  • Impact noise monitoring was conducted at the 2 monitoring stations (NMS2 and NMS3B) for at least once per week during 07:00 – 19:00 in the reporting quarter.

  • Impact noise levels in classrooms shall be less than 5dB above the ambient level.

  • Impact noise on floors may arise from:• foot traffic, particularly in corridors at break times/lesson changeover• percussion rooms• areas for dance or movement• loading/unloading areas (eg in kitchens and workshops)• machinery.Where possible, impact noise should bereduced at source through use of soft floor coverings or floating floors.

  • I.L., Impact noise isolation of composite floors, J Acoust Soc Am, 1971, 50(4): 1043-1050.

  • Impact noise: the importance of level, duration, and repetition rate.


More Definitions of Impact noise

Impact noise means noise of short duration or rapidly changing sound which causes fluctuation of the sound level meter needle in excess of plus or minus two decibels and is therefore incapable of being accurately measured on a sound level meter.
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Related to Impact noise

  • Process Wastewater means any water which, during manufacturing or processing, comes into direct contact with or results from the production or use of any raw material, intermediate product, finished product, by-product, or waste product.

  • National Pollutant Discharge Elimination System (NPDES) means the national program for issuing, modifying, revoking and reissuing, terminating, monitoring, and enforcing permits and imposing and enforcing pretreatment requirements, under Sections 307, 318, 402, and 405 of CWA. The term includes an approved program.

  • Environmental pollution means the contaminating or rendering unclean or impure the air, land or waters of the state, or making the same injurious to public health, harmful for commer- cial or recreational use, or deleterious to fish, bird, animal or plant life.

  • Crawling bug insecticide means any insecticide product that is designed for use against ants, cockroaches, or other household crawling arthropods, including, but not limited to, mites, silverfish or spiders. “Crawling Bug Insecticide” does not include products designed to be used exclusively on humans or animals, or any house dust mite product. For the purposes of this definition only:

  • Stormwater management planning area means the geographic area for which a stormwater management planning agency is authorized to prepare stormwater management plans, or a specific portion of that area identified in a stormwater management plan prepared by that agency.

  • Flea and tick insecticide means any insecticide product that is designed for use against fleas, ticks, their larvae, or their eggs. “Flea and Tick Insecticide” does not include products that are designed to be used exclusively on humans or animals and their bedding.

  • Environmentally critical area means an area or feature which is of significant environmental value, including but not limited to: stream corridors, natural heritage priority sites, habitats of endangered or threatened species, large areas of contiguous open space or upland forest, steep slopes, and well head protection and groundwater recharge areas. Habitats of endangered or threatened species are identified using the Department’s Landscape Project as approved by the Department’s Endangered and Nongame Species Program.

  • New Jersey Stormwater Best Management Practices (BMP) Manual or “BMP Manual” means the manual maintained by the Department providing, in part, design specifications, removal rates, calculation methods, and soil testing procedures approved by the Department as being capable of contributing to the achievement of the stormwater management standards specified in this chapter. The BMP Manual is periodically amended by the Department as necessary to provide design specifications on additional best management practices and new information on already included practices reflecting the best available current information regarding the particular practice and the Department’s determination as to the ability of that best management practice to contribute to compliance with the standards contained in this chapter. Alternative stormwater management measures, removal rates, or calculation methods may be utilized, subject to any limitations specified in this chapter, provided the design engineer demonstrates to the municipality, in accordance with Section IV.F. of this ordinance and N.J.A.C. 7:8-5.2(g), that the proposed measure and its design will contribute to achievement of the design and performance standards established by this chapter.

  • Sewage sludge weight means the weight of sewage sludge, in dry U.S. tons, including admixtures such as liming materials or bulking agents. Monitoring frequencies for sewage sludge parameters are based on the reported sludge weight generated in a calendar year (use the most recent calendar year data when the NPDES permit is up for renewal).