---
title: "Urban settings -  timesteps tab | Technical Reference"
slug: "urban-settings-timesteps-tab"
description: "Learn about the timesteps tab in the model settings window to specify the timestep to be used in the simulation. "
tags: ["1D urban modelling"]
updated: 2022-09-23T15:18:16Z
published: 2022-09-23T15:18:16Z
canonical: "help.floodmodeller.com/urban-settings-timesteps-tab"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.floodmodeller.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Urban settings -  timesteps tab

In the **Time Steps** tab of the urban Model Settings window, you specify the timestep to be used in the simulation.

![UrbanSimulationsimagestimestepstab.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/UrbanSimulationsimagestimestepstab.PNG)

The **Routing Step** should be small (compared to the height of your conduits), especially if using Dynamic Wave routing. The timestep can be significantly larger if using Kinematic Wave routing, and is irrelevant if considering the time-invariant (Steady-state) solution.

We refer the user to the [EPA Manual](https://www.epa.gov/sites/default/files/2019-02/documents/epaswmm5_1_manual_master_8-2-15.pdf) for further details on this tab of the urban Model Settings window.