--- title: "Revit Arrays Masterclass: The Complete Guide to Smart Repetition (2025 Update)" description: Learn how to use array in Revit, when to avoid it, and why nested families still matter. Now updated for Revit 2025. image: https://blog.fetchbim.com/hubfs/revit_arrays_thumbnail.png --- [![Fetch BIM](https://blog.fetchbim.com/hs-fs/hubfs/raw_assets/public/FetchBIM_November_2022/images/Fetch-Logo-Dark.png?height=262&name=Fetch-Logo-Dark.png "Fetch BIM")](https://fetchbim.com/) BIM Library [By Markets](https://fetchbim.com/bim-library/markets) [By Product Type](https://fetchbim.com/bim-library/product-types) [Business Highly flexible workplace and storage solutions are more important than ever.](https://fetchbim.com/bim-library/markets/business) [Education With hybrid learning here to stay, we specialize in modular classroom furniture, lockers, and furnishing.](https://fetchbim.com/bim-library/markets/education) [Healthcare Nurses, doctors, and technicians need easily located storage solutions with fast access to provide patient care.](https://fetchbim.com/bim-library/markets/healthcare) [Industrial High-quality industrial storage solutions that are efficient and can grow with your business.](https://fetchbim.com/bim-library/markets/industrial) [Museum Protect irreplaceable artifacts and preserve important specimens in any museum or gallery collection.](https://fetchbim.com/bim-library/markets/museum) [Public Safety Secure evidence, turnout gear, and find the right tool quickly when time is of the essence.](https://fetchbim.com/bim-library/markets/public-safety) [Casework Create breakrooms, lounge areas, and office settings that are functional and stylish.](https://fetchbim.com/bim-library/product-types/casework) [Lockers Lockers provide safe, secure, and accessible storage in almost any setting.](https://fetchbim.com/bim-library/product-types/lockers) [Retrieval Systems Bring inventory to where it’s needed, minimizing time spent searching for a part.](https://fetchbim.com/bim-library/product-types/retrieval-systems) [Shelving Whether it’s a small room or a large warehouse, shelving solutions can make any storage space functional.](https://fetchbim.com/bim-library/product-types/shelving) [Desk, tables & stations The first step to completing any manual task is to use the proper work surface.](https://fetchbim.com/bim-library/product-types/desk-tables-workstations) [View All Families](https://fetchbim.com/search?m=0) [View All Model Groups](https://fetchbim.com/search?f=0) Resources Learn Support Featured Content [About Us Learn about who we are and what we do.](https://fetchbim.com/about) [Blog Discover the latest Fetch product updates and news.](https://blog.fetchbim.com/) [FAQ Get quick answers to our most common questions.](https://fetchbim.com/faq) [Contact Us Contact us to get assistance from our sales or support teams.](https://fetchbim.com/contact) [Documentation Documentation and guides to get the most out of Fetch.](https://fetchbim.com/documentation) [![](https://23230026.fs1.hubsblog.fetchbim.compotusercontent-na1.net/hubfs/23230026/Fetch/how-to-fetch.png') How to Use Fetch: Effortless Revit Model Insertion & Customization](https://blog.fetchbim.com/how-to-use-fetch-effortless-revit-model-insertion-customization) [![](https://blog.fetchbim.com/hubfs/revit-myth-blog.webp) Reductive Thinking in BIM: Revit and the Myth of the Over-Modeled Family](https://blog.fetchbim.com/reductive-thinking-in-bim-autodesk-revit-and-the-myth-of-the-over-modeled-family) [![](https://blog.fetchbim.com/hubfs/Fetch%201.4.1%20-%20filters.jpg) New Features and Updates to Fetch](https://blog.fetchbim.com/fetch-app-update-2024) - 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[Kyle Bruxvoort](https://blog.fetchbim.com/author/kyle-bruxvoort) ![](https://blog.fetchbim.com/hubfs/revit_arrays_thumbnail.png) ## Introduction: Why Arrays Matter in Revit If you've ever found yourself manually copying dozens or hundreds of identical elements in Revit, you know the pain of repetitive modeling. Whether you're placing chairs in an auditorium, lights in a grid pattern, or shelves in a storage unit, Arrays are your solution to smart, parametric repetition. Arrays in Revit allow you to create infinite copies that all behave as one unit. The genius? You only need to control two elements to control everything else. But here's the crucial rule that many beginners miss: the item you array cannot be modeled in-place or built directly within the current family. It must be a single, self-contained object—like a finished, loadable family or nested family. In this comprehensive guide, we'll cover everything you need to know about Revit Arrays, including the revolutionary 2025 update that solves the long-standing "Array of 1" problem. ## What are Arrays and why use them? ### Understanding Arrays at the project Level At its core, an Array is a tool that creates **parametric copies** of an element in a specific pattern. Think of it as a fancy copy tool where the copies remain grouped, meaning you can easily change the number of items or their spacing later. **Setting up a basic linear array in a project:** 1. **Load your family**: Go to Insert tab → Load Family 2. **Place your element**: Use Architecture tab → Component to place a single instance 3. **Create the array**: Select your element, go to Modify tab → Array (or type ***AR***) 4. **Configure settings**: - Ensure **"Group and Associate"** is checked in the Options Bar - Select **"Linear"** for straight-line repetition - Choose **"Second"** method for precise spacing control 5. **Define the pattern**: Click your starting point, then click to set the distance between first and second items 6. **Adjust count**: Change the number in the Options Bar to set total copies ### Creating radial arrays For circular arrangements like chairs around a table or lights in a circular pattern: 1. **Select your element** and start the Array command 2. **Choose "Radial"** in the Options Bar 3. **Set center of rotation**: Click "Place" and define your center point 4. **Define the pattern**: - **"Second" method**: Sets angle between each item - **"Last" method**: Sets total sweep angle and distributes items evenly The "Last" method is particularly useful when you need to fit a specific number of items within a defined arc, like fitting 8 chairs around three-quarters of a circular counter. ## Family Editor: Where arrays become powerful ### The Golden Rule: Always use nested families **Critical Best Practice**: Inside the Family Editor, ALWAYS create arrays using nested families, never raw geometry. Here's why this matters: - **Raw geometry arrays break**: When you array extrusions or sweeps created directly in your host family, they create visible seam lines and don't join properly - **Nested families stay clean**: Arraying a nested family encapsulates the geometry and behavior, making your array robust and predictable - **Better performance**: Nested family arrays are more stable and efficient in your overall model ### Setting up for success Before creating arrays in the Family Editor: 1. **Align your first element**: Use the Align tool (AL) to position your nested family relative to reference planes 2. **Lock the alignment**: This creates a stable framework for your parametric array 3. **Focus on precision**: Only the first element needs precise alignment—the array will follow ## Linear arrays: "Second" vs "Last" methods ### The "Second" method (recommended) **When to use**: When you need precise control over spacing between items **How it works**: You define the exact distance between the first and second items, and Revit repeats that spacing throughout the array. **Best for**: Consistent modular spacing like shelves, locker compartments, or structural elements where spacing is critical. ### The "Last" method **When to use**: When you know your total length constraint but want to vary the number of items within it **How it works**: You define the total span from first to last item, and Revit distributes items evenly within that distance. **Best for**: Cabinets of fixed width that need variable numbers of drawers, or fitting elements within specific boundaries. ## Connecting arrays to parameters This is where arrays become truly powerful for parametric design: 1. **Select your array group** 2. **Access Properties**: In the Properties Palette, find the "Number" parameter 3. **Create parameter**: Click the "Associate Family Parameter" icon → "New Parameter" 4. **Configure parameter**: - Name: "Number of Shelves" (or relevant name) - Type: Integer - Group: Construction or Dimensions - Instance vs Type: Instance for more flexibility 5. **Test in Family Types**: Use the Family Types dialog to change values and watch your array update automatically **Pro tip**: These parameters can be driven by formulas, allowing for complex parametric relationships based on overall family dimensions. ## The Big Decision: When Are Arrays Worth It? ### Arrays add complexity Arrays create grouped elements that require entering a group editor to modify individual components. This can become cumbersome with many arrays or nested arrays. ### When arrays are worth it: - **Variable repetition**: The number of items changes frequently - **Homogeneous elements**: All items are identical and move together - **Large quantities**: Arrays with 5+ items show clear benefits - **Parametric control**: You need the count driven by parameters or formulas ### When to avoid arrays: - **Small counts**: For 3 or fewer items, individual copies are simpler - **Individual variations needed**: Each item requires different properties - **Static situations**: Number rarely changes - **Performance concerns**: Very large arrays (100+ items) can impact model speed ## Array limitations you must know ### 1. No individual differences **The problem**: You cannot easily have individual variations within an array group. Changing one element affects all elements in the array. **Impact**: If you need some chairs with arms and others without, or some shelves glass and others wood, arrays won't work. You'd need to ungroup them, losing parametric benefits. ### 2. Performance considerations Large arrays can impact model performance, especially: - Arrays with hundreds or thousands of instances - Complex nested families within arrays - Multiple arrays within a single family - Projects with many arrayed families ## Game changer: Revit 2025 update ### The "array of 1" problem (pre-2025) Before Revit 2025, setting an array count to "1" would: - Break the array entirely - Delete elements - Generate errors - Force complex workarounds using Yes/No visibility parameters ### The 2025 solution **Revolutionary change**: Revit 2025 finally allows arrays with a count of "1"! **What this means**: - Arrays maintain integrity with single instances - No more complex visibility workarounds - Seamless flexibility from 1 to unlimited items - Simplified family creation workflow **Why it matters**: This simple change makes arrays exponentially more useful for dynamic families and eliminates major pain points for content creators. ## Advanced tips for students and new professionals ### 1. Start simple - Practice with basic rectangular arrays before attempting complex radial patterns - Master the "Second" method before exploring "Last" method applications ### 2. Plan your reference framework - Always establish clear reference planes before arraying - Use consistent naming conventions for your reference planes - Lock critical alignments to prevent accidental movement ### 3. Test parametric behavior - Always test your arrays at extreme values (1 item, maximum items) - Check array behavior when family is flexed to different sizes - Verify performance with realistic item counts for your use case ### 4. Document best practices - Name your array parameters descriptively ("Shelf Count" not "Number") - Group related parameters logically in the Properties palette - Include parameter tooltips when creating custom families ### 5. Quality assurance workflow - Test arrays in both family editor and project environment - Verify array behavior when family types change - Check model performance with realistic array sizes ## When to consider alternatives ### Manual copying **Best for**: - 2-3 identical items - Items that need individual modification - One-time arrangements ### Specialized BIM content **Consider**: High-quality manufacturer families that provide configurability without array complexity. These often offer: - Built-in parametric control - Optimized performance - Manufacturer data integration - Professional quality assurance ## Conclusion: Mastering arrays for better BIM Arrays are powerful tools for identical repetition in Revit, offering parametric control that can significantly speed up your modeling workflow. Remember these key takeaways: **Essential rules**: - Always use nested families, never raw geometry - Only array when repetition truly benefits from parametric control - Consider maintenance complexity vs. benefits **2025 Game changer**: - The "array of 1" capability revolutionizes family creation - Eliminates major workflow bottlenecks for content creators **Best practices**: - Master both "Second" and "Last" methods - Connect arrays to parameters for maximum flexibility - Always test at extreme values - Consider performance implications for large arrays **For Students**: Start with simple arrays and gradually build complexity as you master the fundamentals. Understanding when NOT to use arrays is as important as knowing how to create them. **For New Professionals**: Focus on creating robust, maintainable families that your team can easily understand and modify. Well-planned arrays can be powerful assets, but poorly implemented ones become maintenance nightmares. Arrays represent just one tool in your parametric modeling toolkit. Master them, but always choose the right tool for each specific situation. Your future self (and your teammates) will thank you for the thoughtful approach. Tags: [Fetch](https://blog.fetchbim.com/tag/fetch) [Back to Blog](https://blog.fetchbim.com) - [Tweet](https://twitter.com/share) ## Related Articles ## [How to Create a Custom 3D Cube in Revit: Step-by-Step Tutorial for Beginners](https://blog.fetchbim.com/how-to-create-a-custom-3d-cube-in-revit-step-by-step-tutorial-for-beginners) Creating custom 3D objects in Revit can be a daunting task, but it doesn't have to be. With the... [Read More](https://blog.fetchbim.com/how-to-create-a-custom-3d-cube-in-revit-step-by-step-tutorial-for-beginners) ## [How to Easily Configure Our Student Desks with Revit](https://blog.fetchbim.com/fetch-student-desks) Are you looking for the perfect furniture to enhance your educational projects? Look no further!... [Read More](https://blog.fetchbim.com/fetch-student-desks) ## [How better Revit data leads to better projects: A practical guide for BIM teams](https://blog.fetchbim.com/how-better-revit-data-leads-to-better-projects) Revit content has come a long way, but most firms still deal with the same problems: inconsistent... [Read More](https://blog.fetchbim.com/how-better-revit-data-leads-to-better-projects) ### **contact information** 2535-B E. State Highway 121, Ste. 110 Lewisville, Texas 75056 (800) 803-1083 [*#*](https://www.facebook.com/fetchbim) [*#*](https://twitter.com/fetchbim) [*#*](https://www.youtube.com/channel/UCCZNSWd-v9HFIy1LdgpQG5g) **Nav Links** - [BIM Library](https://fetchbim.com/bim-library) - [Sign In](https://fetchbim.com/login) - [All Model Groups](https://fetchbim.com/search?f=0) - [All Families](https://fetchbim.com/search?m=0) - [Markets](https://fetchbim.com/bim-library/markets) - [Product Types](https://fetchbim.com/bim-library/product-types) - [Site Map](https://blog.fetchbim.com/sitemap.xml) - [Blog](https://blog.fetchbim.com) ![Fetch BIM](https://blog.fetchbim.com/hubfs/raw_assets/public/FetchBIM_November_2022/images/Fetch-Logo-Dark.png "Fetch BIM") © 2023 FetchBIM All Rights Reserved. | [Privacy](https://fetchbim.com/privacy-policy) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Kyle Bruxvoort", "url" : "https://blog.fetchbim.com/author/kyle-bruxvoort" }, "dateModified" : "2025-08-29T21:24:54.845Z", "datePublished" : "2025-08-29T21:13:53.000Z", "headline" : "Revit Arrays Masterclass: The Complete Guide to Smart Repetition (2025 Update)", "image" : [ "https://blog.fetchbim.com/hubfs/revit_arrays_thumbnail.png" ], "mainEntityOfPage" : { "@id" : "https://blog.fetchbim.com/arrays-in-revit-guide-2025", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.fetchbim.com/hubfs/Branding/Fetch-Logo-Dark-2.png" }, "name" : "Southwest Solutions Group" } } ```