Overview
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Francis TIMMERMANS: Engineer from the École nationale supérieure d'électrotechnique de Grenoble - Research and Development Director, Groupe Tractel
INTRODUCTION
Variable-level suspended platforms are used in the civil engineering and industrial sectors to provide access for personnel to a work area located at height. Some of the most common types of work performed from a suspended platform are listed below:
facade cleaning and painting;
sandblasting and painting of large metal structures;
construction and maintenance of engineering structures ;
work on high-rise structures such as antennas, chimneys and lighthouses.
The characteristics of the platform - dimensions, payload - depend on the structure and the type of work being carried out; nevertheless, platforms are classified according to three types:
Platform permanently installed on a building to maintain and clean its facades, known as a "facade maintenance unit";
standard platform temporarily installed for routine work ;
special platform designed to meet a user's specific needs.
The selection criteria that favor the use of a suspended platform are :
working area over 20 m high;
duration of work beyond one day.
On the other hand, the selection criteria that favor the use of a platform lift are :
working area up to 25 m high ;
time-limited work at the same location ;
high mobility ;
ground access must be kept clear.
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Devices for lifting persons