Working platform network

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A work platform net is a horizontal, comfortably accessible work platform, tightly meshed (45 mm mesh size), knotless, double-contoured nets according to DIN EN 1263-1 that are clamped into the roof / supporting structure, which are additionally supported by braided and tensioned cross straps (redundant system in a 2 m grid ) and additional tensioning belts (tensioning set every 0.5 m in the edge area).

In the edge areas, the work surface must be supplemented with edge protection devices. A fine-meshed material safety net (mesh size 2 mm) is usually installed under this work platform in order to catch any small parts that may fall.

Mainly work platform nets are used in the construction industry for assemblies at high altitudes. Here, very large areas with relatively little mass can be made safely accessible. They were developed for the construction of foils and membrane roof surfaces, but are now used for many security, assembly and maintenance work. Another use is in biology for researching upper tree levels.

In Germany they were developed in 2004 by the company Membranteam GmbH for the construction of the ETFE pillow case for the Allianz Arena in Munich. In close cooperation with the BG, the BGI 662 was written from this, which describes the rule structure.

The advantages of a work platform network are that the floor below the work area is not blocked or endangered by work platforms, that work can be carried out at many points in the network at the same time, that there is as much light permeability as possible and that it is relatively light. It should be noted that relatively large forces are introduced into the load-bearing structure and, due to the high pre-tensioning of the work platform, these are significantly higher than those of a pure safety net solution as fall protection. Under certain circumstances, these forces must be compensated for by makeshift structures. A static assessment of the installation situation by the specialist engineer is necessary.

Force input into the existing building structure

Forces occurring in the edge area and through the cross straps of the work platform nets in the supporting structure: Force input at the dowel points and the consoles of the steel structure (cross strap attachment points) max. 8 kN at full load (network overload). Normal entry 2.0 kN - 3.0 kN when using the net area in the area of ​​load entry by people and material.

Standards and regulations that deal with work with work platform nets are BGI 662 (instructions for handling work platform nets) as well as BGR 179 (use of protective nets) and BGR 198/199 (guidelines for working at heights).

See also

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