Table 4 - 12 in Saidabad Water Treatment Plant Project, Phase III

Table 4-12: Noise Limits for Various Working Environments LAeq, 8hLAmax, fastHeavy Industry (no demand for oral communication)85 dB(A)110 dB(A)Light Industry (decreasing demand for oral communication)50 – 65 dB(A)110 dB(A)Open offices, control rooms, service counters or similar45 – 50 dB(A)--Individual offices (no disturbing noises)40 – 45 dB(A)--Classrooms, lecture halls35 – 40 dB(A)--Hospitals30 – 35 dB(A)40 dB(A) Note: For acceptable indoor noise levels for residential, institutional, and education settings refer to WHO (1999)