# Construction height (Water Overlay)

Attribute | Unit | Function value | Description |
---|---|---|---|

FLOOR_HEIGHT_M | m | Floor height (m) | The height of a floor in a construction. Additionally each section of a construction can have a different amount of floors. |

#### Construction height

Though not an explicit attribute or function value in and of itself, the height of a construction for the water overlay is calculated as:

*construction height = floors * floorHeightM*,

where the floorHeightM is the construction's attribute value for FLOOR_HEIGHT_M and floors is the amount of floors of the construction's section.

#### Construction height in water model

The height of constructions is taken into account when computing the flow of water above ground. Constructions are computed to have at most a height of DESIGN_FLOOD_ELEVATION_M. Lower constructions retain their own construction height. Taller constructions have their height capped at the attribute's value.

## How-to's