Photogrammetry — Building construction — Dunkirk Urban Community
Description
Accurate database at 1/500 containing many visible elements of the landscape: roads, enclosures, wooded and grassed areas, canals, buildings.
This repository covers the entire territory of the Dunkirk CU and is used as a topographic background for the management of summary pre-projects or as a default topographic study.
It is also used to analyse the evolution of the territory.
It consists of 39 layers of information:
This layer includes the linear representation of the ridges corresponding to the breaking lines of the roofs.
* A ridge line is limited by:
— Another ridge line
— Roof border.
This layer of information makes it possible to have characteristic points of the roofs defined in XYZ at the sewer and at the ridge of each building.
The purpose of these data is to enable:
. assign a minimum and maximum building height to the built component of the photogrammetric plane.
. to schematically model buildings in 3D.
Cases of figures and methods of surveying:
Roofs with two sides of slope the same • a point at the ridge a point at the sewer of the roof side of the roadside
Roofs with two different slopes • a point at ridgeing a point at the sewer of each roof
Flat roofs • one point
Multi-slope roofs • a point at ridgeing a point at the sewer of each roof
Complex roof buildings • a maximum of 10 characteristic points
Resources
| Name |
Format |
Description |
Link |
|
0 |
|
https://opensig.dkgl.fr/geoserver/SIRS/ows?service=WFS&version=1.0.0&request=GetFeature&typeName=SIRS%3APHOTOGRAMMETRIE_BATI_FAITIERE&outputFormat=SHAPE-ZIP |
Tags
- photogrammétrie
- aménagement-urbanisme
- aménagement-du-territoire
- cud
- urbain
- usage-des-sols
- aménagement-urbain
- aménagement
- installations-de-suivi-environnemental