Building

Building related to Function, Addressess and Plot

In the Tygron Platform, Buildings are a collection of physical objects present on the surface and below ground. These include constructions and roads placed by people, planted trees and agriculture, nature, culverts and drainage pipes.

Function of a Building

A Building is always assigned to a Function, which specifies properties shared by buildings of the same type. These also include visual properties. Each individual Building can also override most of these properties if necessary. See also attributes and List of Functions;

Sections

Several Buildings consisting of three sections with each a different amount of floors (3, 4 and 2).

Buildings consist of one or more sections. These sections each have their own surface plan and an amount of floors, allowing one building to consist of multiple sections of different floors and heights, while sharing the properties of that building. These sections are not allowed to intersect.

Type of Layer

A Building is also part of one layer; surface, underground or bridge. The layer a Building belongs to is determined by their main Category. This layer can put restrictions on a building when editing it. It also determines how it is treated by calculation models. For example, Buildings in the layer surface are considered to be directly on top of the surface terrain and can override the maximum rain infiltration rate.

Ownership

A Building is always owned by one stakeholder. A building is generally situated in one plot, but can be spread among more. A plot has an owner as well, which is often the same, but can be different from, the building owner. See also ownership.

Impact of overlays and indicators

Buildings have an impact on various overlays and indicators; a large concrete ware house will probably have a negative influence on the green and parking indicators, prompting stakeholders to respond to these changes, if required for their indicator objectives. For an example on Buildings and their effects see also.

Initial buildings

When a new project is generated using the New Project Wizard, Buildings will generally be placed automatically in the project based on the used data sources. Additional buildings can be imported using the Geo-wizard or manually added and adjusted using the Editor. During a session, stakeholders can plan the construction of new Buildings and the demolition of existing buildings, as integral part of the session mechanics. Upgrading existing buildings with green roofs, renovation etc., during a session is also possible.

Categorization

In the Tygron Platform, buildings can be categorized in multiple ways depending on the context. For example, some calculation models only take into account buildings that belong to a road system, have a specific attribute or are situated underground.

These categories are used to distinguish buildings:

• Road and Road system: A building with a function that belongs to one of these function categories: Road, intersection or bridge.
• Underground: A building having a function that belongs to the category: underground.
• Standard building: A building belonging to a function that is not a road or underground category.
• Residence: A residential building of e.g. category LUXE or STUDENT.
• Solid: A building with attribute SOLID is part of the DSM.
• Vacant: Whether a building is settled by residents or not.
• Layer: A building belongs to either of these layers: surface, underground or bridge. This can restrict to what function a building can be changed.
• Function: Buildings with a specific function
• Category: Buildings with a function belonging to a specific function category.
• Attribute: Buildings have a specific attribute.
• Key: Buildings that have an attribute specified in an overlay as a key. For example Culvert or Weir

• 
  European housing
• 
  Dutch Asphalt Road
• 
  Underground buildings

Attributes

Building attributes can be tricky. It is important to know a few things:

• A building inherits all attributes from its function
• Not all properties of a function , such as name, image and description, are attributes.
• A function's attribute can be overridden by its related Function Override
• A building can override each attribute.
• A building can define additional attributes not present in a function.
• Removing an attribute from a building does not remove that attribute from its function.

It is possible to access and modify the Attributes of Buildings using queries.

Icon	Attribute	Unit	Range	Description
	BAG_ID	Integer		A unique identifier for the Building as assigned by the BAG.
	BRP_CODE	Nominal		Crop identification number provided by the Basisregistratie Gewaspercelen (BRP) Source
	CONSTRUCTION_FINISH_DATE	timestamp		Attribute indicating the date this Building was constructed, in seconds from epoch.
	GEOMETRY_COLOR	Color		A building color that takes precedence over other color function values and Custom Geometries colors.
	NWB_ID	Integer		A unique identifier for a road as assigned by the NWB.
	POPULATION_DENSITY_M2	people/m2		The average population per m2 of lotsize of this building.
	POWER_LINE_BUILDING_ID	ItemID		The ID of the next Transmission Tower Building to connect powerlines to.
	PRIVATE_YARD	boolean		Whether the building is a private yard belonging to a residence or private stakeholder.

Visualization

The visualization of a Building is by default based on a 3D model generated by the Tygron Platform. Model Sets and subsequent Model Data linked by the Function of a Building determines its default visualization. A default 3D Model generally consist of walls, a roof, optionally a basement and (randomly) placed furniture.

Walls are categorized in the following levels: Ground, Extra, Top and Basement. Each level has a texture and a color. Windows, doors etc are defined using decals.

A roof is generated using the surface polygon of a building section. On top of the roof, objects can be placed, called furniture. An examples of roof furniture is a chimney. The height of a roof is determined by the slanting roof height.

A Building can also be visualized without walls and roofs. In such case furniture is placed on top of the DTM, and can represent a plant, crop or tree, as well as industrial installations.

Finally, the Building style setting also determines the way a building is visualized.

Colors

Building colors can be overwritten using various color function values:

Function value	Attribute	Unit	Per category	Range	Description
Basement color	BASEMENT_COLOR	color	No	-2147483648 to 2147483647	The color of walls at the basement floor of a building.
Ground color	GROUND_COLOR	color	No	-2147483648 to 2147483647	The color of walls at the bottom floor of a building.
Extra color	EXTRA_COLOR	color	No	-2147483648 to 2147483647	The color of the walls of the floors of the building which are neither the top nor bottom floor.
Top color	TOP_COLOR	color	No	-2147483648 to 2147483647	The color of the walls of the top floor of a building, unless that floor is also the bottom floor.
Roof color	ROOF_COLOR	color	No	-2147483648 to 2147483647	The color of the roof of a building. For flat building (such as gardens and roads), it is also the color of the ground surface.

All of these colors are ignored for the visualization of a Building when the following attribute is defined:

• Geometry color (Building Attribute)

This attribute allows for specifying a single visualization color of a building. Removing this attribute restores the visualization back to either the colors defined by the Custom Geometry, in case it has any, or to the color function values of that Building.

Custom Geometry

A building's visualization can be overwritten by assigning a Custom Geometry to it. Generally these are automatically assigned when importing 3D models at new project generation or when importing 3D models using the Geo Import Wizard.

• 
  Building with a 3D model generated by the Tygron Platform.
• 
  Building with an imported Custom Geometry

Notes

• Building is a Sourced Item, which means its records which Sources created it and which Sources changed any of its properties.

How-to's

• How to add and remove buildings
• How to edit building properties
• How to edit building addresses
• How to draw selections for buildings
• How to adjust Building Costs
• How to correct a building at the edge of the project area
• How to correct multiple buildings on the same location
• How to create a Geo Plugin to import Buildings at Project creation
• How to import Buildings with a specified amount of floors
• How to create an Overlay showing the presence of structures
• How to create an Overlay which highlights unused land
• How to visualize the year of construction using an overlay

API Endpoints

• Api session items buildings

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