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Lighting pole stability testing

Roch – Municipal responsibility

Roch – Municipal responsibility

Current situation
Municipal authorities have the duty of looking after the safety of the building equipment committed. However, how can an authority decide with certainty which pole is (still) technically satisfactory or represents a risk of destruction?

Visual inspection, ultrasound wall thickness measurement or a simple loading test is absolutely insufficient when the duty to ensure the safety of equipment operation or even to compensate for claimed damage is at stake.

Regular undifferentiated exchange of poles (e.g. because of a certain age of poles) results in unnecessarily high costs and an enormous burden for the municipal budget. Acute replacement is necessary actually in 4% to 6% of the tested poles. An economical solution consists in separating the poles in good condition, thus eliminating potential risks. But there is an uncomplicated, certain and economical possibility of how to get from such a difficult situation which almost every municipal authority must face!

Our solution – legally mandatory strength and stability test
Roch – Services GmBH is a testing laboratory certified according to DIN EN ISO 9001 which has corresponding competence in the field of pole strength and stability testing. The Roch method is a proprietary non-destructive testing method used throughout the world for pole systems. It enables a quick, uncomplicated and cheap test of strength and stability while simultaneous complying with the requirements for cost-saving and legal responsibility.

Cheap and effective
The stability of pole systems consists in pole strength and mounting stability. The Roch method induces artificial wind load which stresses the pole in bending. A diagram drawn with electric sensors (dependency of deflection and shift on the applied force) similar to that used for testing materials throughout the world is used for test assessment. The Roch method examines both the material strength and pole anchoring stability simultaneously. This testing method can be carried out quickly with minimum potential costs; it is reliable and defines measurement results clearly. This is a prerequisite for the Roch – Services GmBH testing reports to be used in full extent as evidence of equipment performance capability. The test can be carried out anytime and anywhere by trained Roch – Services operators.

The procedure and technology used (more than 800,000 reviewed poles throughout the world!) is the proprietary ownership of Roch – Services GmBH.

Your benefits

  • Enormous savings. Testing of the place of replacement: You do not replace poles unnecessarily in the case of a positive test.
  • Legal certainty and responsibility with respect to damage caused.
  • Advanced maintenance system.

Roch testing method

Roch testing method

Strength and stability test
The non-destructive testing method according to Roch is based on a generally recognized principle of metallurgical tests and strength science used in all testing laboratories throughout the world.

The Roch testing method combines the best from execution and measuring of the test with consequent displaying and assessment of the result.

The endangered zones for pole stability.

  • Connected parts of poles: The thermal load resulting from welding may lead to the formation of cracks and other material deformations.
  • Pole flap: This is statically the weakest zone of a pole. Cracks in the material may be formed as a result of age, qualitative changes and overloading in this zone.
  • Ground penetration: This pole section is especially susceptible to corrosion caused by moisture, spread salt, dog excrement, stray currents and the rubbing of metallic parts.
  • Ground section: This zone is susceptible to corrosion as a result of concentrated accumulation of harmful substances and retained moisture. There is a risk of formation of cracks as a result of heavy mechanical load.
  • Foundation: A problem in the foundation results from the erosion of the ground section and consequent moisture condensation causes damage to the stressed underground part of the pole.

Principle of the test:

  • The test simulates the force with which wind acts on the complete pole (course of bending moment). The pole is loaded with previously calculated and slowly increasing force. Pole deflection is measured and recorded simultaneously in a graphic diagram. Loading and alleviation or deflection of the pole indicates defects in the pole and in its foundation in the ground without material destruction. In order that all hazardous zones are taken into consideration during the test, the testing force should have effect at the height of 1.8 – 2.0 m.

This method can be used for tests of metallic, concrete and wooden poles of all types (street or motorway lighting, railway structures, lighting of sports facilities, etc.)

racom elsing seak harvard roch

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