# Calculation Models

After reading this page:

- you've learned what is a Calculation Model.
- you've learned how Calculation Models relate to the Tygron Platform.
- you've learned what Calculation Models are used.
- you've learned when to use your own Calculation Models.

## Contents

## What is a Calculation Model

A calculation model is the principle which is used as a formula for calculations. The origin of the calculation models differ from scientific research to calcutation models that are officially used by certified public authorities.

## How Calculation Models relate to the Tygron Platform

The calculation models that are integrated in the Tygron Platform are used to calculate effects. The effects are formulated as the results arising from the content of your project and measures and adjustments that are taken in the project area. Because of this function the Tygron Platform can be used for giving insight in the effects on the environment in various scenario's for the current and future situation.

The Tygron Platform can make two kinds of calculations, Vector calculations and Grid calculations.

Based on the purpose of the calculation, the effects can be vizualized in various ways and places.

Feedback and result of the calculations that are made (in excel) can be vizualized in:

- The indicatorscreen
- A panel
- Zone permit panel (in case the new situation does not fit the zoning plan)
- Globals
- Attributes (only for areas, buildings, and neighborhoods)
- Overlays (Area-, attribute- or custom overlay. NOTE: provided that it is a grid calculation)

## Calculation Models

The Tygron Platform makes use of a couple of build in calculation models. These are applicable for the default indicators and overlays that are available in the Tygron Platform.

Name overlay | Source Calculation model | Description | More information |
---|---|---|---|

Traffic Noise | Wetten.nl calculation method SRM1 and key figures via InfoMil.nl | Emissions in decibels on roads. | https://previewsupport.tygron.com/wiki/Traffic_Noise_(Overlay) |

Traffic No2 | Wetten.nl calculation method SRM1 and key figures via InfoMil.nl | Emissions in NOX on roads. | https://previewsupport.tygron.com/wiki/Traffic_NO2_(Overlay) |

Livability | Based on VROM-leefbaarometer | Physical quality of the environment. | https://previewsupport.tygron.com/wiki/Livability_(Overlay) http://www.tygron.com/downloads/climategame/Climategame_main_manual_v1.0.pdf, blz 71 https://www.leefbaarometer.nl/home.php |

Heat Stress | Two models: DPRA Heat Stress model and UNESCO-IHE Heat Stress Model | Heat stress in urban areas. | DPRA: https://previewsupport.tygron.com/wiki/Heat_stress_(Overlay) UNESCO-IHE: http://support.tygron.com/w/downloads/climategame/Heatstress.pdf |

Flooding, Groundwater and Rainfall | Implementation of a 2D grid based shallow water model based on the 2D Saint Venant equations and enhancements (see more information) | Provide insight into water stress and impact caused by for example (excessive) rainfall or a levee breach and insight into long-term processes of water flow both on the surface and underground | https://previewsupport.tygron.com/wiki/Water_Overlay |

## When to use your own Calculation Models?

Using your own calculation models is mostly done for two specific reasons. First of all, however the calculation models that are implemented in the Tygron Platform by default are reliable and are often used in practice by experts and governments, the Tygron Platform provides space to make use of specific calculation models that are the standard within your own organization. Second of all, you can create a new custom section in which a calculation that is not provided in the Tygron Platform is used. For example, an indicator or a panel. This is part of the possibility to create your custom project corresponding to your own real life project case. See the article on Excels for more information on how to implement your own calculation model.