BB365

THOMAS BUILT

Exterior Noise Test

Accelerating from Constant Speed

Date : 1995-02-20
Personnel : R.L., B.R., & R.H.
Temperature (°F) : 51 Humidity (%) : 60
Wind Speed (mph) : 9 Wind Direction : WSW
Barometric Pressure (in.Hg) : 29.7
Verify that microphone height is 4 feet, wind speed is less than 12 mpg and ambient temperature is between 30 F and 90 F: true checked by R.L.
Initial Sound Level Meter Calibration: false checked by R.L.
Exterior Ambient Noise Level dB(A): 39.6

Accelerating from Constant Speed
Curb (Right) Side
Accelerating from Constant Speed
Street (Left) Side
Run # Measured Noise Level dB(A) Run # Measured Noise Level dB(A)
1 75.5 1 74.8
2 75.5 2 74.7
3 74.8 3 74.4
4 75.0 4 74.7
5 74.6 5 74.1
Average of two highest actual noise levels = 75.5 dB(A) Average of two highest actual noise levels = 74.8 dB(A)