---
title: "How to add a Conduit link | Tutorials"
slug: "how-to-add-a-conduit-link"
description: "Learn how to add a 1D urban conduit link from the 1D urban build tab. "
tags: ["1D urban modelling", "conduit"]
updated: 2022-08-03T09:09:59Z
published: 2022-08-03T09:09:59Z
canonical: "help.floodmodeller.com/how-to-add-a-conduit-link"
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.

# How to add a Conduit link

Please note, this guide refers to the urban Conduit link, however the same method applies for urban Pump, Weir, Orifice and Outlet links.

Note: If you want the length of your conduit to be automatically calculated based on the line drawn on the map, you must first set the length equal to zero in the **Model Defaults**. Recall how to do this from the [Urban Networks](/v1/docs/1d-urban-networks) section. This must be done **before** adding a link. Once your link has been drawn, you cannot set the length equal to zero in the link properties to use this functionality.

On the **1D Urban Build tab**, initially confirm you are in **1D Urban selection mode** by ensuring the toggle is coloured blue.

Click the **Add link** icon and a pop-up window will appear. Notice the **Start node** field is highlighted initially.

![1DUrbanimagesaddlink1.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DUrbanimagesaddlink1.PNG)

**Note:** Click on this window and drag to ensure it is not in the way of your map view

In the **Map** view, click on the inflow node the link is to be connected to. Alternatively, click in the **Start node** field and type the name of the node, or select it from the drop-down list (starting to type will filter the list accordingly). Notice the **Start node** field now contains the label of the node you selected in the map, and the tool is now automatically highlighting the **End node** field instead.

![1DUrbanimagesaddlink2.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DUrbanimagesaddlink2.PNG)

In the **Map** view, click on the outflow node the link is to be connected to. Alternatively, click in the **End node** field and type the name of the node, or select it from the drop-down list (starting to type will filter the list accordingly).

![1DUrbanimagesaddlink3.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DUrbanimagesaddlink3.PNG)

**Note** : The **Link type** drop-down will be set to CONDUIT by default. This can be adjusted if a different link type is required.

Click the **Add Link** button when you are satisfied with the start and end nodes selected. The link will automatically be added to the **map** view, and the **Links** tab of the **1D Urban Network panel**. It will be pre-filled with values and options set on the **Model Defaults** window, recall how to edit these defaults from the section.

![1DUrbanimagesaddlink4.PNG](https://cdn.document360.io/5074bc26-a9ef-4bf4-b1de-a5c6ce628aca/Images/Documentation/1DUrbanimagesaddlink4.PNG)

You will notice the **Start node** field is highlighted again, ready for you to add another link. Click the **Close** button when you have finished adding links and the pop-up tool will close.