Floor Area Calculation For Occupancy

The net floor area is intended to include only the area of the room used for a specific purpose and does not include the areas mentioned in the above definition and therefore is not included in the net floor area.

Floor area calculation for occupancy.

The occupant load factors used for each room come from table 7 3 1 2 in nfpa 101 life safety code. The occupancy load is calculated by dividing the area of a room by its prescribed unit of area per person. The code formulates the number of exits based on the number of occupants in the office. Calculate the occupancy load using the following formula.

Calculate a basic estimation of a room s maximum occupancy by dividing the available floor space in square feet by 36. Call center 50 ft x 25 ft 1 250 ft 2 1 250 ft2 50 ft2 per person 25 people. Units of area per person for specific buildings can be found in the chart at the end of this article. Spaces 450 ft in area 75 ft fact sheet the floor plan below shows an example of occupant load calculations for several types of rooms commonly found in an office.

To calculate the net floor area of the classroom. Where data regarding the sq. When calculating occupancy we do not use one calculation for the entire building we need to apply the occupancy rules for each of the various areas to attain accurate calculations. Floor area occupant load factor occupancy load for office.

Floor or building as the case may be is designed or 2 by using the appropriate occupant area ratios from table 6 2 whichever is larger. To calculate a room s maximum occupancy determine factors such as the area of the room the available space in the room the number of useful exits and the height of the ceiling. If the minimum area per person is 100 sq ft the occupation rate is 1 100 0 01 person per sq ft or 10 persons per 1000 sq ft. The occupant load of any space shall include the occupant load of all spaces that discharge through it in order to gain access to an exit.

Measure only the area where people will sit or stand. Occupancy rate is maximum numbers of persons per area unit. For example if you want to find the maximum occupancy of a bar measure only where patrons will stand and not the area behind the bar. The general guidelines for floor area allowances per occupant for a 2 occupancy is as follows.

For instance the chart dictates that dormitories require 50 square feet of floor area for every room occupant. If you have a room that is shaped irregularly separate the room into square portions for ease of measurement. The floor area within the inside perimeter of the exterior walls of the building under consideration exclusive.