Table 2.

Model’s parameters and variables used in the case study.

Parameter/Variables	Value Range	Justification/References
Population of worker agents	100	•A common setting to understand construction workers behaviors during a construction project (Ahn et al., 2013).
Percentage of activities classified as low risk	40–70%	•As limited information exists regarding the spread of COVID-19 among construction workers a range of values is used to model workers contagion rate (Varotsos and Krapivin, 2020). •A range of values for these parameters are used to represent a wide variety of potential cases (Ahn et al., 2013).
Percentage of activities classified as medium risk	30–40%
Percentage of activities classified as high risk	0–20%
Rate of infection during construction activities	0–40%	•As limited information exists regarding the spread of COVID-19 among construction workers a range of values is used to model workers contagion rate (Varotsos and Krapivin, 2020).
Arrival time to work	7–8 am	•Assumption of the arrival from construction workers based on a 45 work-hours week, a longer work-hours week may have detrimental effects on construction workers (ENR 2010).
Leaving time from work	5–6 pm
Quarantine duration	Two weeks/14 days	•Duration of the quarantine if infected with COVID-19 (ENR 2020c)