How does the Fire Marshal Determine the Maximum Occupancy of Rooms?

Most people have noticed when dining in a restaurant or staying in a hotel room, that there is a maximum occupancy limit for the space. This is usually quoted as being ordered by a fire marshal. Just what goes into determining the maximum occupancy of a room? Are there formulas or guidelines that all fire marshals use to determine room occupancy? Here are a few facts about what goes into determining maximum occupancy for any space.

There are a number of factors that go into determining the maximum occupancy of the space. One of the most obvious is the size of the enclosed space. This will include consideration of the available floor space, as well as the height of the ceiling. It is important to keep in mind that it is not just a matter of using the measurements of a room. Such factors as the placing of permanent columns, large pieces of furniture that are not likely to be moved, and any built in areas such as counter tops and cabinets will make an impact on what is considered available floor space. The final maximum occupancy ordered by the fire marshal will include all these types of considerations, making sure there is never too many people in the room that getting out of the space in an emergency would prove impossible.

Another important factor to consider with maximum occupancy is the number and placement of exits from the space. Having more than one possible exit will make a big difference in the maximum occupancy, assuming that each of the possible exits could in fact be used easily. For example, windows on the second floor, while a way out of the space, would not be considered and easy exit from the space.

The intended purpose of the space will also impact the maximum occupancy that is allowed in the area. Factors will vary from a general dining room to a theater to a hotel bedroom. While some of those factors are rather fine points, fire marshals understand how important it is to take into consideration the purpose for the space and how it is related to safety issues.

One general rule of thumb in determining maximum occupancy is a simple formula of multiplying the room’s width in feet by the length in feet. The answer can then be divided by thirty-six to arrive at a basic occupancy figure. Keep in mind this approach simply sets the stage for the consideration of other factors and is not necessarily a firm and final maximum occupancy. Only the fire marshal will be able to quickly identify other factors and determine a maximum occupancy that is both equitable and safe.