EN 81-71-2018 pdf download.Safety rules for the construction and installation of lifts- Particular applications to passenger lifts and goods passenger lifts – Part 71: Vandal resistant lifts.
Observation in the form of security cameras or by extenswe use of glass In the lift car and doors, with the lift located to allow observation, will greatly reduce the degree of vandalism that may be encountered. Consideration should be given to how effective the observation is likely to be and how effective any planned response to a given situation would be.
The provision of a mirror within the car can provide a useful distraction, but consideration should be given to the selection of the material used.
High levels of lighting are a deterrent to vandals and where surveillance systems are present provides for increased definition for identification purposes.
In selecting the Category of lift to be installed, the following may be adopted as a guide:
— will there be access control of the area containing the lift;
— is the building located in an area likely to be subject to vandalism;
— is the type of building known to suffer from vandalism;
— is the intended use of the lift likely to contribute to damage – (use of trolleys, etc.);
— what type of user as defined above will be expected to use the lift.
The building designer and lift contractor should seriously consider these aspects and the benefits of providing additional surveillance before selecting the Category of lift required.
Having determined the Category of lift, the designer also needs to consider the number, speed and size of the lifts. Incorrect selection of these parameters can also encourage vandalism and therefore very serious attention should be given to the following section.
A.4 Lift performance
The waiting time for users and the time spent travelling in the car should be as short as possible.
To avoId users being frustrated by tong waiting periods, the number and speed of cars in a multiple lift installation should be selected to provide an average interval of less than 45 s.
Select the size of the lift, taking account that in buildings where the use of push chairs or trolleys is expected, the lift car will in effect be full when one or two such devices are in the car. Where such devices are to be expected, lifts of suitable size should be selected.
The lift may incorporate a load by-pass feature to prevent car stopping at floors when full or nearly full.
In buildings where push chairs, wheelchairs, etc. are likely to be used, they will take up the available car floor area thus preventing other passengers entering the car even though it is not fully loaded. In such situations any load non-stop device should be set to operate at approximately 60 % of the rated load to avoid abortive car stops that will frustrate users.
A device to shorten the door dwell time should be considered to minimize user frustration. Such devices may be a door close button, light ray device or other similar means.
A door nudging feature in accordance with EN 81-20:2014. 5.3.6.2.2.1 b) 4) will help to keep the lift operational and thereby minimize user frustration.
A.5 Corrosion protection
Consideration should be given to the selection of car and landing finishes to ensure they resist corrosion from bodily fluids and cleaning solvents.
It is recognized that fouling can occur in Category 1 lifts but it is not envisaged this will be on a continuous basis. Therefore specific anti-corrosion measures are not essential for Category 1 lifts.
5.8 requires specific corrosion protection to be provided to those parts of Category 2 lifts that provide structural integrity to the doors and lift car.
The type of anti-corrosion measures taken will depend on the design of the lift, its environment and the materials selected. This is not defined by this document but the following may be used as a useful guide.
The designer may choose a special design to keep corrosive agents away from critical parts and/or provide additional anti-corrosive measures to critical parts. Steel can be treated by galvanising or anticorrosion paint treatments. Hot dip galvanising is best avoided due to the distortion of steel members caused by the heat process. Bronze alloys also offer good long-term protection as do many plastics and composite materials.EN 81-71-2018 pdf download.