Reqired Numbersof Elevator Per Floor Per Occupant

Lobby indicators designate which car to use which is programmed by the time of arrival. Destination oriented elevators group passengers for the same destination to reduce wait and travel times. The 5th floor is 4 stories above the level of exit discharge since the 1st floor is on the level of the exit discharge so a 4 story building would not require an elevator per chapter 10.

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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.

Reqired numbersof elevator per floor per occupant.

A four story office building has 3500 square feet on the first floor and 2500 square feet on each of the other floors. When using a destination oriented elevator an occupant calls an elevator car by first indicating which floor they need usually on a keypad. An elevator is not required because each floor has less than 3000 square feet. The occupant evacuation elevator lobby floor area also shall accommodate one wheelchair space of 30 inches by 48 inches.

One needs to know the number of people the elevators are to be planned for. 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. 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. 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.

Each occupant evacuation elevator lobby shall have minimum floor area as follows. 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 required. 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.

A four story building has 2900 square feet per floor. Population to be served. This type of elevator reduces the number of stops per trip.

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