00497402

Component

http://onlinepubs.trb.org...trr/1990/1255/1255-004.pdf

http://scholar.google.com...lker&publication_year=1990

All of the single-number indices currently used to assess the sound insulation of walls use one-third octave band sound transmission loss data in the frequency range 125 to 4,000 Hz. Forty-two walls were measured over the range 50 to 5,000 Hz. None of the existing indices correlated well with the calculated 50- to 4,000-Hz loudness reduction using the International Organization for Standardization method. A new proposed rating, the outdoor-indoor transmission class (OITC), which is based on A-weighted sound reduction in the range 80 to 5,000 Hz, shows significant improvement over other methods. Typically, both the loudness reduction and OITC give lower numbers than sound transmission class for wall constructions.

This paper appears in Transportation Research Record No. 1255, Energy and Environment 1990: Transportation-Induced Noise and Air Pollution. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01414362

p. 19-22

1990

Transportation Research Record

030905009X

Figures (6) ; References (9) ; Tables (2)

Dwellings; Electric insulating materials; Insulating materials; Ratings; Sound level; Walls

Design; Environment; Highways; Terminals and Facilities

TRIS, TRB

Sep 30 1990 12:00AM

• AIRPORT NOISE INSULATION OF HOMES SURROUNDING STAPLETON INTERNATIONAL AIRPORT
• ATMOSPHERIC EFFECTS ON TRAFFIC NOISE PROPAGATION
• BARRIER OVERLAP ANALYSIS PROCEDURE
• COMPARISONS OF EMISSIONS OF TRANSIT BUSES USING METHANOL AND DIESEL FUEL
• CONTROL OF WHEEL SQUEAL NOISE IN RAIL TRANSIT CARS
• COST OF NOISE BARRIER CONSTRUCTION IN THE UNITED STATES
• ENERGY-RELATED, ENVIRONMENTAL, AND ECONOMIC BENEFITS OF FLORIDA'S HIGH-SPEED RAIL AND MAGLEV SYSTEM PROPOSALS
• FEASIBILITY OF TRANSPARENT NOISE BARRIERS
• FIELD TESTING OF THE EFFECTIVENESS OF OPEN-GRADED ASPHALT PAVEMENT IN REDUCING TIRE NOISE FROM HIGHWAY VEHICLES
• HIGH-SPEED RAIL SYSTEM NOISE ASSESSMENT
• KNOWLEDGE-BASED PREPROCESSOR FOR TRAFFIC NOISE PREDICTION
• PREDICTING STOP-AND-GO TRAFFIC NOISE WITH STAMINA 2.0
• PUBLIC REACTION TO LOW LEVELS OF AIRCRAFT NOISE
• SOUND INSULATION AND THERMAL PERFORMANCE MODIFICATIONS: CASE STUDY FOR THREE DWELLINGS NEAR BWI AIRPORT