A compartment with the following data is subjected to a fire. The compartment located in remote area is designed as office usage. The following information is given: Automatic smoke alarm is provided; No independent water supplies are provided; No firefighting devices are provided; The office is made of concrete, p=2500kg/m3; cp=980J/kgK; k=1.5W/mk; There are two ventilation openings on the walls. The dimensions (breadth x height) are 3.6m x 1.5m for Opening 1 and 7.2m x 1.5m for Opening 2; The breadth x length x height of the compartment is 7m x 14m x3m; Use Annex E of the Eurocode 1(Part 1-2) to determine the fire load density (MJ/m?) incorporating appropriate factor of safety