> ## Documentation Index > Fetch the complete documentation index at: https://docs.realtimelca.com/llms.txt > Use this file to discover all available pages before exploring further. # Revit > Send Revit models to Real-Time LCA through the Speckle Connector for Revit. Use the **Speckle Connector for Revit** to publish your model to a Speckle project that a Real-Time LCA project listens to. After publishing, Real-Time LCA picks up the new version automatically and refreshes the BIM types and quantities. ## Prerequisites * A Revit installation supported by the Speckle Connector — Revit **2023**, **2024**, **2025**, **2026**, or **2027** New. * Your Real-Time LCA **Speckle credentials** for `https://api.realtimelca.com` (sent by email when you activated your account — see [Introduction to Speckle](/user-guide/integrations/speckle)). * A Real-Time LCA project configured with a Speckle Connection (see [Create a new project](/user-guide/project/create-new-project)). ## Install the connector Install the Speckle Connector for Revit from [releases.speckle.systems](https://releases.speckle.systems/). Restart Revit after installation — the connector appears as a **Speckle** tab in the ribbon. ## Sign in to the Real-Time LCA Speckle server The first time you launch the connector, the **Welcome to Speckle** dialog opens with the public Speckle server (`https://app.speckle.systems`) pre-filled. Speckle for Revit welcome dialog with https://app.speckle.systems in the server URL field. Replace it with the Real-Time LCA Speckle server URL: ``` https://api.realtimelca.com ``` Welcome dialog with https://api.realtimelca.com entered in the server URL field. Click **Log in**. The connector opens your browser on the Speckle login page hosted at `api.realtimelca.com/authn/login`. Speckle login page at api.realtimelca.com asking for E-mail and Password. Enter the **email** and **temporary password** from your Speckle credentials email and click **Log in**. Lost the email? Use **Reset password** at the bottom of the login form, or contact [support@realtimelca.com](mailto:support@realtimelca.com). ## Authorize the connector After logging in, Speckle asks you to authorize **Desktop Connectors** to access your account. Authorize application screen showing John Doe and a request from Desktop Connectors with Deny and Authorize buttons. Click **Authorize**. Speckle confirms the connection and instructs you to return to Revit. Authorize application success screen confirming Desktop Connectors is connected to your Speckle account. Switch back to Revit — the connector now shows the **Hello!** screen with **Publish** and **Load** options. Speckle for Revit Hello screen with Publish and Load buttons and a Getting started link. ## Publish a model ### Step 1: Pick a Speckle project Click **Publish** on the Hello screen. The connector shows every Speckle project your user can edit on the Real-Time LCA server. Select project dialog listing NTI New Headquarter as a project the user can edit. Choose the project that matches the one you configured in Real-Time LCA. Use **Search your projects** to narrow the list when you have many. ### Step 2: Pick a model Each Speckle project contains one or more models — for example, *structural* or *architectural* — that map to the discipline models you selected during [Speckle model configuration](/user-guide/project/create-new-project#configure-the-speckle-models). Select model dialog under NTI New Headquarter listing structural and architectural models. Click the model you want to publish into. ### Step 3: Choose what to send The **Select objects** dialog lets you decide which part of the Revit model is sent. Select objects dropdown with Selection, Views, and Categories options. You can publish from: * **Selection** — the elements currently selected in Revit. * **Views** — every element visible in a specific view (the recommended option for Real-Time LCA, because the view defines the scope of the calculation). * **Categories** — every element of one or more Revit categories (for example, *Walls*, *Floors*, *Columns*). For Real-Time LCA we recommend creating a dedicated 3D view that contains only the elements you want to assess, then publishing **Views → that view**. Select objects in Views mode with the View dropdown open and ThreeD - Real-Time LCA - Structural selected. ### Step 4: Confirm publish settings Scroll down in the dialog to review the publish settings before sending. Publish settings panel with Detail Level Medium, Reference Point InternalOrigin, Include Linked Models on, and a Publish button at the bottom. | Setting | Recommended value | | ------------------------------ | ---------------------------------------------------------------------------- | | **Detail Level** | *Medium* — balances geometry fidelity with publish time. | | **Reference Point** | *InternalOrigin* — keeps the geometry aligned with the Revit project origin. | | **Send null/empty parameters** | Off — keeps payload small. | | **Include Linked Models** | On if your assessment covers linked models. | | **Send Rebars As Volumetric** | Off — better performance. | | **Send Areas As Mesh** | Off unless you specifically need mesh-based areas. | Click **Publish** to send the model. The Real-Time LCA project receives the new version automatically and refreshes the BIM types and quantities. ## Parameter mapping Real-Time LCA looks for the parameter configured on the project (by default `BIMTypeCode`) to group elements into BIM types. Make sure this parameter is populated on your Revit elements before publishing — see [Speckle model configuration](/user-guide/project/create-new-project#configure-the-speckle-models) for how the mapping is set on the project side.