ENVIRONMENTALLY FAVOURABLE SOUND BAFFLE WALLS

UMWELTFREUNDLICHE LAERMSCHUTZWAENDE

After explanation of the terms sound, noise, loudness, sound intensity, sound level, audibility threshold, bel, decibel and sound level range, the author enumerates the available preventive measures against traffic noise: tunnels, banked cuttings, soil embankments, elevation, low level retaining walls and sound baffle walls. The requirements of the "guidelines for sound baffle walls for roads" concerning durability and low maintenance costs are fully satisfied by concrete, as elucidated by a few examples. The absorption values required in some cases can be achieved by the use of a sound-absorbing coating. There are however still differences of opinion concerning acceptable levels of noise immission. The values for the noise level limits regarded as desirable, namely 55/45 db(a) (55 during the day, 45 during the night) cannot be achieved on purely cost grounds. The leading local government organisations estimate that to achieve a limit of 60/50 db(a) the cost will amount to 7%, corresponding to 320 million dm/year, of the total capital investment, in the case of federal highways, for provincial roads 4% or 60 million dm/year, and for municipal roads 16% or 960 million dm/year. (TRRL)

  • Corporate Authors:

    Bauverlag GmbH

    Wittelsbacherstrasse 10, Postfach 1460
    D-6200 Wiesbaden 1,   Germany 
  • Authors:
    • Dietsch, W
  • Publication Date: 1978-1

Language

  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00324662
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM