update of noise database for prediction - Defra, UKCrushing Concrete / Rubble. 14 . Octave Band Sound Pressure Levels (Hz) .. Ж Drive-by maximum sound pressure level in Lmax (Octave Bands) and LAmax.concrete crushers sound pressure level,Calm crushing in London's city centre - RUBBLE MASTER2.0 tracked crusher is the quietest crusher in the industry, environmentally . of the standardised measuring procedure: the mean noise pressure level (Lp) at a.
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