Hydrological attributes of buildings (Water Overlay): Difference between revisions

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Besides the [[building]]s which directly influence the hydrologic model as a [[Hydraulic structures (Water Overlay)|hydraulic structure]], each Building may also have attributes which can contribute to the hydrological model in some way. These attributes are stored and used on a grid cell level. This is different from the hydraulic structure attributes, which are stored and used on an object level.  
Beyond acting as [[Hydraulic structures (Water Overlay)|hydraulic structures]], buildings may have additional attributes that influence the hydrologic model. These attributes are stored and used on a grid cell level. This is different from the hydraulic structure attributes, which are stored and used on an object level.  


These attributes can be changed individually per Building or per building's function. In most cases, these attributes already exist as a [[function values|function value]].
These attributes can be changed individually per Building or per building's function. In most cases, these attributes already exist as a [[Function Value]].


{{building attributes|suppresscategory=true|allowselflinks=true|
{{building attributes|
{{:Building height (Water Overlay)}}
{{:Critical infrastructure (Water Overlay)}}
  {{:Ground infiltration md (Water Overlay)}}
  {{:Ground infiltration md (Water Overlay)}}
{{:Root depth m (Water Overlay)}}
  {{:Sewered (Water Overlay)}}
  {{:Sewered (Water Overlay)}}
{{:Solid (Water Overlay)}}
{{:Water transpiration factor (Water Overlay)}}
{{:Water manning (Water Overlay)}}
{{:Water microrelief m (Water Overlay)}}
  {{:Water storage m2 (Water Overlay)}}
  {{:Water storage m2 (Water Overlay)}}
{{:Root depth m (Water Overlay)}}
{{:Water evaporation factor (Water Overlay)}}
{{:Building height (Water Overlay)}}
{{:Critical infrastructure (Water Overlay)}}
{{:Water manning (Water Overlay)}}
  {{:Tracer ABCD (Water Overlay)}}
  {{:Tracer ABCD (Water Overlay)}}
}}
}}


In addition to the [[Attribute]]s of [[Building]]s affecting the calculations of the [[Water Overlay]], the [[building height (Water Overlay)|building height]] of [[Building]]s affects the interpretation of the [[elevation model (Water Overlay)|elevation model]].
Besides influencing [[Water Overlay]] calculations, building attributes—specifically [[building height (Water Overlay)|building height]]—also affect the interpretation of the [[elevation model (Water Overlay)|elevation model]].


{{article end
{{article end
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* In contrast with hydraulic structures, which can only behave as a single hydraulic object, [[building]]s can have all of the above effects on the hydrological model simultaneously.
* In contrast with hydraulic structures, which can only behave as a single hydraulic object, [[building]]s can have all of the above effects on the hydrological model simultaneously.
* Attributes which are connected to a function value can not be redefined using a different attribute name.
* Attributes which are connected to a function value can not be redefined using a different attribute name.
|api=
* [[Api session event editor building set attribute]]
* [[Api session event editor functionoverride set attribute]]
}}
}}


{{WaterOverlay hydrological building attribute nav}}
{{WaterOverlay hydrological building attribute nav}}
[[Category:Water Module]]
[[Category:Water Module]]

Latest revision as of 14:01, 15 July 2026

Beyond acting as hydraulic structures, buildings may have additional attributes that influence the hydrologic model. These attributes are stored and used on a grid cell level. This is different from the hydraulic structure attributes, which are stored and used on an object level.

These attributes can be changed individually per Building or per building's function. In most cases, these attributes already exist as a Function Value.

Icon Attribute Unit Range Description
FLOOR_HEIGHT_M m The height of a floor in a building. Additionally each section of a building can have a different amount of floors.
CRITICAL_INFRASTRUCTURE nominal Whether this building is deemed a critical. 0 means the building is never deemed impacted.
GROUND_INFILTRATION_MD m/day The speed at which water can flow vertically from the surface to the unsaturated zone.
ROOT_DEPTH_M m 0 to 65519 The depth of the roots of this Building, relative to the terrain height at the location of this Building. Water can be drawn from the ground and evaporated if the roots can reach it.
SEWERED boolean Whether this building is connected to the sewer.
SOLID boolean 0 or 1 Whether the building is solid and blocks water flow or not.
WATER_TRANSPIRATION_FACTOR factor 0 to 65519 Factor indicating how much a building with a crop, tree or plant function facilitates evapotranspiration. This factor is multiplied with the weather's evaporation rate at a particular time in the simulation.
WATER_MANNING s/(m1/3) 0.01 to 0.255 The Gauckler–Manning coefficient of the building.
WATER_MICRORELIEF_M m 0 - 0.255 The height and depth of microrelief hills, in which water can be stored.
WATER_STORAGE m³/m² The water storage capacity per square meter for this building.
TRACER_A x/m²/s -3.4028235E38 to 3.4028235E38 The amount of tracer A created per second per m² in this location.
TRACER_B x/m²/s -3.4028235E38 to 3.4028235E38 The amount of tracer B created per second per m² in this location.
TRACER_C x/m²/s -3.4028235E38 to 3.4028235E38 The amount of tracer C created per second per m² in this location.
TRACER_D x/m²/s -3.4028235E38 to 3.4028235E38 The amount of tracer D created per second per m² in this location.

Besides influencing Water Overlay calculations, building attributes—specifically building height—also affect the interpretation of the elevation model.

Notes

  • In contrast with hydraulic structures, which can only behave as a single hydraulic object, buildings can have all of the above effects on the hydrological model simultaneously.
  • Attributes which are connected to a function value can not be redefined using a different attribute name.

API Endpoints

Water Module
Water Module
Tutorials
Overview
Theory
Benchmarks
Group
Building attributes
Building height • Critical infrastructure • Ground infiltration md • Root depth m • Sewered • Solid • Water transpiration factor • Water manning • Water microrelief m • Tracer A • Tracer B • Tracer C • Tracer D
Related
Hydrological features • Hydraulic structures •  Terrain attributes • Model attributes • Prequels • Results • Simulation data
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