ISO TS 18870:2014 pdf free

ISO TS 18870:2014 pdf free.Lifts (elevators)一Requirements for lifts used to assist in building evacuation
To calculate the number and size oflifts required to provide an adequate evacuation service, the handling capacity of a given lift or group of lifts shall be determined. To calculate lift handling capacity, the lift designer will require certain information as detailed in Annex B.
Any other building specific information that might affect the handling capacity or assist the lift designer in understanding the issues related to the evacuation strategy should also be provided.
It shall be recognized that there is always a reasonable possibility that a lift or lifts might not be available for some reason. This might occur due to planned maintenance, repairs, etc. An allowance should be made in the handling capacity calculations to take account of this. This shall be done by assuming that in a building with multiple lifts, at least one lift will not be available at any given time and should therefore be removed from any calculation.
In determining the size of the lift, it should be assumed that if a lift car arrives at a floor and there is not enough space for people to enter, there is a risk of panic and/or overloading. This might occur where a wheelchair is in the lift consuming a relatively large amount of floor area in relation to its load. To avoid this situation, the size of lift car chosen should be suitable to accept a wheel chair while still providing room for a number of additional occupant(s).
A lift contractor will be able to calculate the number oflifts and their speed provided that the information contained in Annex B is provided.
Whenever a lift containing passengers has stopped for some reason, it needs to be, if possible,automatically recovered to a safe floor. If it is not close enough to a safe floor to open its doors, it should be provided with a means to enable it to attempt an automatic recovery and during this process both car and landing doors should be locked closed and passengers should be informed that a recovery is taking place.
Whenever a car stops, it is a natural reaction for passengers to try and pull the car door open. For this reason, car doors should be locked shut during automatic recovery operation. The doors should remain locked shut until it is determined that the car has recovered to a floor.ISO TS 18870 pdf download.