HOW TO USE GEOCASSINI IN URBAN PLANNING OPERATIONS?

1. STUDY PHASE (PRE/PRO)
1.1 The data needed for the studies:
1.2 Operation management
– llustrations from the project: Saint-Serge (33)
– Domaine de Grenade
– Control of the operation with the EDM mode
2. WORKS MANAGEMENT
2.1 Set up specific points
– Set up of land boundaries
– Technical set up
2.2 Survey of works
2.3 3D digital file of the executed works Retrocession of public equipment

3. COMMERCIALISATION

3.1 Use la MarketPlace
3.2 Provide GeoCassini features to acquirers
1. STUDY PHASE (PRE/PRO)
1.1 THE DATA NEEDED FOR THE STUDIES:
NATURE WHERE ? HOW ?
Orthophotos Open Data (IGN, others,…) DataBase repertory
Orthophotos Drone (specific production) DataBase repertory
Local Urban Plan Open Data DataBase repertory
other regulations Open Data DataBase repertory
Cadastre Open Data DataBase repertory
Networks specific requests DataBase repertory
Lidar survey specific requests DataBase repertory
Topographic plan specific production DataBase repertory
Soil studies specific production DataBase repertory
Other studies specific production DataBase repertory
Networks detection specific production DataBase repertory
Each data contained in DataBase is shareable and downloadable. Study managers thus have all the data necessary to conduct their studies, which can be used independently of GeoCassini in their own business applications
To note : GeoCassini’s “GeoStore” feature allows any external application to be directly connected to DataBase.
Study managers can themselves upload and share additional data from their research and work.
Dealer networks can be imported in “vector” mode in .dxf, .dwg, .shp formats. json. kml, etc.
To note 1 : if the dealers provide their network plans in .pdf, it is then necessary to redraw them in the topographic plan (time, costs, accuracy, updates). This is why it is preferable to favor the import of networks in vector mode.
To note 2 : generally the network plans are in 2D. GeoCassini makes it possible to integrate these plans by automatically assigning them an altitude from lidar data (reference altitude or depth).
Carry out a Lidar survey of the study area
Why?

The lidar survey makes it possible to describe the study area in the form of a cloud of colorized points, 3D, exhaustive with centimeter precision.
This point cloud is then used in GeoCassini to :
• produced a topographic plan
• navigate dynamically and immersively in the study area facilitating the identification of particular points
• integrate the different planning hypotheses, measure their impacts
• present to the target audiences the evolutions of the project
• facilitate the examination of authorizations and the resulting exchanges
• improve exchanges and collaboration between all parties involved in the development of the area
• facilitate the consultation of companies
• monitor the execution of the work
• produce 2D and 3D digital DOEs

How?

Through fixed scanners (on a tripod), mobile scanners (backpacks, on board vehicles or drones), or by processing orthophotos in digital photogrammetry.

Example of a topographic plan produced from a lidar survey
Soil studies
The reports of the soil surveys stored in the DataBase are geolocated in the cloud of points of the study area, thus facilitating the understanding and identification of the soil surveys.
Network detections
Stored in the DataBase, they directly update the project, either by vector imports, or by direct interpretation in the project.
Example of network detection by direct interpretation
video capture of ground markings transformed into point clouds
3D drawing of the georeferenced layout (cm) of the networks
2D and 3D overview with baseline data
1.2 OPERATION MANAGEMENT
llustrations from the project: Saint-Serge (33) Domaine de Grenade
Presentation: The development covers 200 hectares, partly wooded, including 40 hectares of rhododendrons (largest rhododendron forest in Europe). A castle and its outbuildings will be converted into a luxury hotel, with the grounds to host a golf course.
With the help of
3D overview with DataBase tree structures for displaying drone (forest), Backpack (roads, paths, esplanades, facades) and fixed scanners (interior survey of buildings) data.
Drone view details
Details of interior views of the chateau with details of the upper floor
Details seen from the digital model of the castle with a floor plan
CONTROL OF THE OPERATION WITH THE EDM MODE
Selection in the Database of the directories associated with the management of the operation
• Each directory is independently updated by those who have access to it. The project is automatically updated.

• Directories (or individual files) can be dynamically associated with 2D and 3D representations

• Any type of file can be used in the EDM, from meeting minutes to the digital model of a building complex

• The directories are accessible to users according to the access rights that have been defined for them for each directory (see the DataBase functions)

Display of the project in 3D with the associated EDM tree structure
“LAND” EDM views and detail of the land unit

EDM “NETWORKS ” views and details of existing networks resulting from the detection of networks

EDM “TOPOGRAPHY” views and detail of the overall topographic plan
EDM “URBANISM” views and detailed road plan of the building permit
EDM “URBAN PLANNING” views and stormwater calculation note
Views EDM “URBANISM”: Local urban plan and receipt of deposit of the demolition permit
• Management of all studies, monitoring of all documentation produced, management of authorizations and agreements

• Dynamic presentations to elected officials and authorities as the project is developed

Views study of building layout
Assistance with business consultation
• Provision of the elements of the project necessary for the costing of the works by the companies (control of the quantities, the available data (networks), the locations of the works to be carried out, etc.)
• Management of company responses through the DataBase in the directories reserved for this purpose
• Procurement management and safeguards
• Management of service orders and their history
2. WORKS MANAGEMENT
2.1 SET UP SPECIFIC POINTS
Set up of land boundaries

• Export of the coordinates of the terminals to be implemented from the Project
• Conventional set-up of terminals and usual survey verification
• The survey verification file can be loaded into the DataBase for later control
• Likewise, the lot plans drawn up following the demarcation are saved in the DataBase to be used in the EDM and subsequently used commercially (MarketPlace)

To note : possibility of using the augmented reality application connected to GeoCassini for assistance in setting up the terminals

Technical set up
• Export of the coordinates of the remarkable points of the networks to be implemented from the Project
• Classic set up of remarkable points
• Special assistance for the installation of electrical boxes.
To note : the survey of works will be carried out with the RezoCassini application
2.2 SURVEY OF WORKS
They are made with the RezoCassini application.
• RezoCassini automatically transforms videos taken with a smartphone, a gopro, etc., into colored 3D point clouds.
• RezoCassini then makes it possible to georeference the point clouds obtained either from GPS calibration points, or -simpler and faster- from points of existing point clouds prior to the work.
Examples of survey of flexible networks buried on the Val de Moine operation (Cholet, France)

With a Gopro

With a smartphone

With a Gopro

With a smartphone

Examples of survey of buried flexible networks – sections (Val de Moine) showing the details of the networks, the depth of the trench, the backfill layer of the trench, the backfill layer of the road network.
Examples of surveying buried sewerage networks
Note : possibility of filling in the nomenclature of each piece of network installed
Detail of the outcrops of the networks (sanitation, drinking water, electrical boxes, TV,…)
Other examples of inventory in an urban site

Renewal of drinking water connections

Laying a drinking water pipe

2.3 3D DIGITAL FILE OF THE EXECUTE D WO RKS – RETR OCESSION OF PUBLIC EQUIPMENT
• Superposition of the project of the network plans with the verification of the works
• Drawing of the networks from the point clouds of the works to establish the as-built plans.
• The road sections make it possible to justify compliance with the pavement structure when carrying out the work.
• Control of cubatures of embankments, cuttings and evacuations.
• Control of the construction of rainwater retention basins, etc.
• Classic delivery of the file of executed works supplemented with its definition in 3D AS (As Built).
• In France, LOM law decree n°2021-836 of June 29, 2021 relating to the collection of data describing the accessibility of roads and transport:
use of data from the 3D digital file of executed works to inform the newly developed area.
3. MARKETING
3.1 USE LA MARKETPLACE
It is possible to create a “space” dedicated to the client in the MarketPlace to allow access to each operation:
> Visualize the entire operation
> Visualize each batch individually including in immersive view
> Provide the digital model of each lot with the details of the installation of the networks
> Allows the study of the layout of the construction
> Allows the study of the development of the lot
> Provide the rules of the area
> Provide the demarcation plans
> Provide network plans
3.2 PROVIDE GEOCASS INI FEATURES TO ACQUIRERS
• Verication of works
Example of building foundations for a house
Example of a study for the installation of solar panels on the roof of a house
• Use of the augmented reality application to nd buried networks, land boundaries, etc.
• Use the EDM mode to monitor the contractual relationship with buyers
Example of EDM tree structure – contractual follow-up

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