This tool simulates the long range airborne spread SARS-CoV-2 virus in a finite volume and estimates the risk of COVID-19 infection. It is based on current scientific data and can be used to measures the effectiveness of different mitigation measures.
How to use this tool:
Room data
Enter the data about the area you wish to study. You can find these figures in GIS Portal, or by measuring them yourself.
Ventilation data
Enter the data on the available means for venting of indoor spaces. For mechanical ventilation, you should check with a specialist for the air flow or air change rate.
Event data
Enter the total number of occupants in the room and how many you assume are infected at the same time
For the definition of the activity types:
Office = typical scenario all persons seated, talking.
Workshop = assembly workshop environment, all persons doing light exercise, talking.
Training = one person standing, talking, all others seated, talking quietly (whispering).
Seminar = As training, but all participants take turns in standing and talking (i.e. infectious person talks once).
You should specify if the event is a one off (give date) or recurrent use of the same space for the same activity, in which case tick the months when the activity takes place. (Note so sure about this part – see above)
Specify if a lunch break should be included, and when it starts/stops.
If you will take coffee breaks, they are spread out evenly throughout the day, in addition to lunch.
Mask wearing: Specify if they are worn at occupant workstations