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Stability principle: DEDRA 600 grating D400 class

Product family
Gully grating

The DEDRA 600 gratings use the stability principle ″2 oblique supports + 2 plane supports ″.

Technical design

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Features

Schematization of the stability principle

DEDRA_600_principe_stabilite_grille
Position of the supports on the frame
DEDRA_600_principe_stabilite_grille
Application of the solicitations
DEDRA_600_principe_stabilite_grille
Reaction on first oblique support
DEDRA_600_principe_stabilite_grille
Positioning of the grating
DEDRA_600_principe_stabilite_grille
Reaction on second oblique support and plane support
DEDRA_600_principe_stabilite_grille
Positioning of the grating
DEDRA_600_principe_stabilite_grille
Reaction on second plane support = equilibrium

Legend:

Blue arrow: Solicitations generated by the traffic.

Red arrow: Reaction force of the supports.

Green arrow: Resultant of the reaction forces.

Grey arrow: Positioning of the grating [Weak displacements to find stable supports].

The spring bar is not in permanent tension (passive bar) because it must not be opposed to the light displacement of the grating so that this one finds its supports.

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