§ 3. Definitions.

The following words and terms used in this ordinance shall have the following meanings unless the context clearly indicates otherwise:

Day-night average sound level (DNL). A twenty-four-hour energy average sound level expressed in dBA, with a ten-decibel penalty applied to noise occurring between 10:00 p.m. and 7:00 a.m.

Permits and inspections division or division of permits and inspections. The division of permits and inspections of the department of planning.

Building official. The building code administrator of the permits and inspections division.

Use group. The classification of buildings and structures as to the use and occupancy thereof as set forth in Chapter 3 of the International Building Code.

Sound transmission class (STC) rating. A single number rating characterizing the sound reduction performance of a material tested in accordance with ASTM E 90-90, "Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions."

(Ord. No. 2290, 8-23-94; Ord. No. 2906, 12-20-05)

(Ord. No. 2290, 8-23-94; Ord. No. 2906, 12-20-05)