Event data:
Attendees:
Total number of occupants:
Number of infected people:

Activity type:
Start: Finish:
Infected person(s) presence:
Start: Finish:

When is the event?
Single event Date:
Recurrent usage

Lunch break: No Yes

Start: Finish:

Coffee Breaks No breaks 2 4
Duration (minutes):
Coffee breaks are spread evenly throughout the day.

Face masks:
Are masks worn when occupants are at workstations?
Yes No

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 of them you assume are infected. We have provided common activity types:
Office = typical scenario all persons seated, talking.
Workshop = assembly workshop environment, all persons doing light exercise, talking.
Training = one person (the trainer) standing, talking, all others seated, talking quietly (whispering). It is assumed the trainer is the infected person, for the worst case scenario.
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 select the month when the activity takes place.
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, or are removed when a physical distance of 2m is respected.

CARA Covid Airborne Risk Assessment tool