APPENDIX: OCTAVE-BAND BREAKDOWNS OF DBA LIMITS

   The octave-band breakdowns of the DBA limits used in this chapter shall be:

   (A)   For a residential zone: (55 DBA)

Octave-Band Center Frequency (HZ)	Maximum Boundary SPL (DB)
31.5	72
63	71
125	65
250	57
500	51
1000	45
2000	39
4000	34
8000	32

 

   (B)   For a commercial zone: (64) DBA

Octave-Band Center Frequency (HZ)	Maximum Boundary SPL (DB)
31.5	79
63	78
125	73
250	67
500	61
1000	55
2000	50
4000	46
8000	43

 

   (C)   For an industrial zone: (66 DBA)

Octave-Band Center Frequency (HZ)	Maximum Boundary SPL (DB)
31.5	80
63	79
125	74
250	69
500	63
1000	57
2000	52
4000	48
8000	45

 

(Ord. 82-7, passed 3-8-82)