3D surfaces on Rennes Métropole

This layer of surfaces filled with information at altitude (Z) combined with a Digital Land Model (MNT) is used to improve the representation of the soil in the context of 3D operations implemented in the territory of Rennes Métropole.
This layer is to be combined with the 3D slope breaking line layer on Rennes Métropole (uuid:
0c5751d6-ea8f-4f6a-a4bd-5cca2e3ce476).
It represents the 3D surfaces of certain soil elements in particular:

- The deck of bridges;
- The right-of-way of stairs;
- Water surfaces seized at the boundary between water and soil.The water surface is horizontally populated with a Z which corresponds to the mean altitude of the points of the numerical field model on the zone

Precision of 3D surfaces:

- EMQ XY ~ 20 cm

- EMQ Z ~ 30 cm

The altimeter reference system is the IGN69.