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Le canevas géodésique qui est la réalisation, ou la matérialisation, du système géodésique de référence, n’est bien souvent pas assez dense pour les travaux topographiques usuels. En effet, ces points de référence sont souvent très éloignés des différents chantiers. C’est pourquoi, il est d’usage de densifier ces réseaux géodésiques, de façon locale et en fonction des travaux topographiques à réaliser. Les canevas topographiques réalisés sont alors rattachés au système de référence national à l’aide du réseau géodésique. Ainsi ce canevas d’ensemble constitue l’ossature sur laquelle viendra se greffer le canevas polygonal lors du levé topographique proprement dit. C’est ce dernier qui assurera le lien avec les détails.

Ce maillage de 125 points a été réalisé grâce à l’implantation de points espacés d’une distance maximale de deux kilomètres, afin d’assurer une homogénéité et une précision centimétrique (+/- 1.5 cm) des levés.

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Coordonnées 
sig@agglo-thionville.fr
03-82-526-526 (accueil),
demander le service SIG</gco:CharacterString>
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