Fixed scaffolding classes: an abstract notion for many but essential to use the equipment adapted to its needs and guarantee the safety of the operators and the site.
A fixed scaffold class is a weight story! There are 6 in the normative texts of fixed scaffolds with, for each, a maximum authorized service load. Depending on the nature of the work to be carried out, the user company will choose a scaffolding of a higher or lower class. Here are some keys to see more clearly
OF THE IMPORTANCE OF SCAFFOLD CLASSES
A fixed scaffold is not chosen and can not be used without taking into account its load class. This depends on the structure and the safety of the operators.
The texts of standard NF EN 12811 define the scaffolding classes and the corresponding service loads.
It is the nature of the work to be carried out that will guide the user company in choosing the appropriate class for its scaffolding. It determines whether or not to store tools and materials on work surfaces and the volume and type of storage. The higher the class, the greater the permitted load per m2. For example, a stonecutter will select a class 6 fixed scaffold because its activity involves storing and handling large stone blocks on the floors.
THE 6 CLASSES OF SCAFFOLDS AND THEIR SERVICE CHARGES
In order to meet the different operating conditions of fixed scaffolds, the European standard NF EN 12811 specifies 6 classes and the corresponding loads.
〉 CLASS 1 - Permissible load 75 kg per m2: inspection tasks and work done with light tools and without storage of equipment.
〉 CLASS 2 - Permissible load 150 kg per m2: inspections and painting, repairs, waterproofing, which do not involve the storage of equipment, except those which will be immediately used as paint, plaster.
〉 CLASS 3-Allowable load 200 kg per m2: inspections and operations which do not involve the storage of equipment, except those which will be immediately used as paint, plaster.
〉 CLASS 4- Permissible load 300 kg per m2: brickwork, concreting, plastering. The facade scaffold F3000 of DUARIB falls into this category. Fixed scaffolding F3000 DUARIB
〉 CLASS 5- Permissible load 450 kg per m2: masonry work
〉 CLASS 6- Permissible load 600 kg per m2: heavy masonry work with heavy storage of materials.
There is, however, an essential rule to be observed for the distribution of these loads on the work surfaces. They must be evenly distributed over 1.5 levels of loaded floors:
📏1 level charged at 100%.
The second, directly lower or higher, is 50%.
📏In addition, note that in the case where no normative load can meet the specifications of the work, a calculation note must be carried out.
Source: duarib
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