Use this calculation program to get a very approximate idea of the equivalent sound level
produced by industry at a certain distance. You can choose a sound power from the list, press the calculate button and you will have an average sound level on the preset 50 meters distance. This is, of course, a LAeq sound level when the industry is operational. The default is for 8 hour
functioning over an 16 hr day period. If this is to be different, fill in the time the
machines operates in the required time, eg 4 hour in a 12 hour working day.
If you have to do so, depends of course on local regulations, which may require an LAeq over a time period not te be exceeded, or an absolute maximum. Change the other settings to suit your case.