Report:

• Rising of municipal castings = one of the most painful tasks of the cleaning operative, according to INRS research.

Cause:

• Excessive mass of the covers.
• Clogging of the covers → addition of effort (+ 50% minimum).
• Diversity of the types of manhole covers and the handling tools.
• Lack in training on the effective "postures".

Consequences:

• Onset or aggravation of lumbago.
• Intense cardiac solicitations.
• The prevention of these physiological disorders is conditioned by: - The opening convenience of the covers - The presence "help for the handling" - A "ergonomic" posture - Weights of castings "acceptable"

The performances of VIATOP 2 manhole covers as regards ergonomics facilitate the interventions on the networks and improve the security of exploitation.

Handling box

The measurement of the compressive force on the intervertebral discs enables a scientific evaluation of the physical constraints related to the handling of loads.

The value of 350 daN is internationally recognized like a maximum.

The handling box of VIATOP 2 manhole covers enables the uprising of the covers with efforts significantly lower than this value by using the crowbar in the housing inclined at 35°.