your apartment is on the ground floor and was built above soils rich in radon. assume the infiltration rate is 0.5 ach, the apartment has 200 m2 of floor space, and the total volume is 500 m3. you determine that 0.6 pci (picocuries)/m2-s of radon is emitted from the soil into the apartment. find the steady-state concentration of radon (pci/m3) in the apartment (10 points).

The key factors influencing indoor radon concentration are ventilation rate, outside radon concentrations, and the rate at which radon is produced by building materials.

The total of the radon emission rates and the exposed surfaces of the materials in a room is the radon generation rate for that space. The radon emission rate of dwellings varies greatly since the choice of building materials and exposed areas varies from room to room. The systematic radon growth curve is obtained in this instance, and it is advised that the radon production rate of a room be measured using a sealing approach. The starting slope of the growth curve can be used to calculate the room's radon generator rate.

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