Hydrological attributes of buildings (Water Overlay)
Besides the buildings which directly influence the hydrologic model as a 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.
These attributes can be changed individually per Building or per building's function. In most cases, these attributes already exist as a function value.
|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 underground unsaturated zone.|
|ROOT_DEPTH_M||m||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 underground and evaporated if the roots can reach it.|
|SEWERED||boolean||Whether this building is connected to the sewer.|
|SOLID||boolean||Whether the building is solid and blocks water flow or not.|
|WATER_EVAPORATION_FACTOR||factor||How fast this building can evaporate water from the underground. The weather's evaporation speed is multiplied by this factor to determine the rate of evaporation.|
|WATER_MANNING||s/(m1/3)||The Gauckler–Manning coefficient of the building.|
|WATER_STORAGE||m³/m²||The amount of water this building can store.|
|TRACER_A||x/m²/s||The amount of tracer A created per second per m² in this location.|
|TRACER_B||x/m²/s||The amount of tracer B created per second per m² in this location.|
|TRACER_C||x/m²/s||The amount of tracer C created per second per m² in this location.|
|TRACER_D||x/m²/s||The amount of tracer D created per second per m² in this location.|
- 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.