The occupant evacuation elevator lobby floor area also shall accommodate one wheelchair space of 30 inches by 48 inches.
Reqired numbersof elevator per floor per occupant.
The requirements of 407 apply to destination oriented elevators but some provisions or exceptions which are summarized here are unique to this type of elevator.
Each occupant evacuation elevator lobby shall have minimum floor area as follows.
A four story building has 2900 square feet per floor.
If you are designing such a building i would call the building official to confirm this is the jurisdictions interpretation before you apply for a permit.
An elevator is required.
When using a destination oriented elevator an occupant calls an elevator car by first indicating which floor they need usually on a keypad.
The occupant evacuation elevator lobby floor area shall accommodate at 3 square feet 0 28 m 2 per person not less than 25 percent of the occupant load of the floor area served by the lobby.
Population to be served.
This type of elevator reduces the number of stops per trip.
The occupant evacuation elevator lobby shall accommodate 3 square feet per person not less than 25 percent of the occupant load of the floor area served by the lobby.
Occupant evacuation elevator lobbies shall be able to house one wheelchair with a space of 30 inches by 48 inches for every 50 persons within the area the lobby serves.
Lobby indicators designate which car to use which is programmed by the time of arrival.
Figuring the number of people can be a tricky business firstly one has to calculate the total population in a building which could be unknown if it s a speculative project secondly not all the people would want to go to the same floors at the same time.
An elevator is not required because each floor has less than 3000 square feet.
Destination oriented elevators group passengers for the same destination to reduce wait and travel times.