What is BIM in Revit Context? Top 20 Sites of Revit BIM Models.

GlossaryDecember 23, 2020
rubysketch web page

To properly understand the concept of a Revit Family, it’s important first to address the differences between Revit and BIM. Surprisingly enough, many people still tend to think that Revit and BIM are one and the same, but that is not true.

Some level of confusion in these terms is understandable, because, for example, you can refer to a 3D model as “BIM” or as a “Revit model”, but it doesn’t mean that these two are the same. The main difference in this specific case is that the 3D model is designed by Revit application to be used for BIM.

What is Revit?

It’s also important to remember that, in essence, BIM is a process, and Revit is a software. So, what is BIM in the context of Revit? Essentially, BIM is often represented as a massive process that uses a plethora of different tools across different stages of the project, and one such tool is Revit. BIM does not design anything, Revit does.

What is Revit? Revit is a BIM software that allows users to use drafting elements and parametric modeling in the design process. In essence, a BIM Revit model contains the entire life cycle of a building or a project in question (from conceptualization to daily usage and deconstruction). Revit’s relational database architecture is what makes it all possible (Revit creators call it the parametric change engine).

Another way of looking at this is a 3D BIM Revit model, referred to as both “BIM” and as a “Revit model”. A 3D model in question is designed for BIM by interacting with Revit as a piece of software. The answer to the question “What is Revit?” would still be “software” in this case.

BIM has a primary role in linking various pieces of information into one cohesive system, making both interaction and cooperation between different parties and different phases of the project easier.

Main working principles of Revit

Revit is a shareable single file database that can connect different parts of the project into one single system that can update themselves whenever the information about one of them changes in some way. This kind of interaction allows Revit-based projects to have little to no disconnect between different parts of the said project.

The majority of the project (a building of sorts, most of the time) is done by using various 3D objects to create all of the necessary parts of a self-sufficient structure, such as walls, roofs, doors, windows, floors and so on. It’s possible for users to create their own models and objects in both 2D and 3D forms, making Revit extremely versatile in this perspective.

A shareable copy of the project’s database serves as a centerpiece and is stored within an office’s network. Each participant is then working with a copy of the project’s master file that is stored on their working station. Saving the copy of the file (sometimes called local file) triggers the update process which exchanges information in both ways – towards the master file and with the local file.

Revit itself also continually checks if there’s more than one user working on a project, preventing most of the conflicts that could have arisen in the process. This allows for the master copy to act as a reference point for the entire team, constantly updated and interacted with. Additionally, in the case of more than one discipline working on the same project, Revit can also run interference checks to search for components within the project that are placed in the same physical space.

One of the major use cases for Revit to be used is in the MEP field (Mechanical, Electrical, and Plumbing). The majority of construction projects include at least some degree of MEP. The appearance of 3D Revit models helps MEP specialists with their layout and design problems when it comes to electrical wiring, plumbing, and so on.

To help even more with MEP and the design as a whole, Revit has created a new type of object collection called Revit Families. All objects within the Revit itself belong to a family and have a defined hierarchy. This is where Revit Families come in. The popularity of this addition is extremely high since Revit allows for the addition of various third-party families, and there’s quite a lot of free ones across the web.

That’s not to say that Revit is a self-contained piece of software since it also supports the drafting import from other CAD platforms in many formats, including SKP, DXF, SAT, DWG, and more. Revit is working primarily with the proprietary file formats – RVT for BIM models, RFA for Revit families.

Top 20 sites to get Revit families

In this article, we’ll go over the top 20 sites to download Revit families.

  1. BIMsmith Market

bimsmith market web page

BIMsmith is a rapidly growing BIM platform, and BIMsmith Market represents their substantial library of thousands of free Revit BIM models. The website also comes with a number of different search filters and view modes, making the Revit Family browsing much more user-friendly.

  1. Blocks Revit

blocks revit web page

A curated collection of Revit families, somewhat different because it only offers the download of collections, not single families. It does have a registration before downloading requirement, and there’s also a paid membership available for more Revit families.

  1. RevitCity

revitcity web page

Aside from the original purpose of downloading free Revit families, RevitCity offers several different functions, like idea sharing, question answering, and finding the content you’ve been looking for. A detailed search filter is also available if you want to look for specific versions of Revit or specific file formats.

  1. MeasuredSurvey365

masuredsurvey365 web page

A good selection of free Revit Families separated by a large number of diverse categories – and all of that in a user-friendly comprehensive interface. You can find a lot of things there, including car families, plant families, railing families, and so much more than that.

  1. BIM Object

bim object web page

One of the largest growing digital content management systems for BIM objects, stores tens of thousands of product families, and can also filter products based on brands, file types, object categories and regions.

  1. ProdLib

prodlib web page

What is BIM in Revit when it comes to ProdLib? It is a software for Revit family management with the addition of a free library full of Revit BIM models for a specific list of manufacturers. There’s a log of different categories included in the search, and the software itself makes the interaction of CAD models a lot easier.

  1. Smart BIM Library

smart bim library web page

One more Revit family sharing site includes both manufacturer-specific and generic content. It’s easy to look for specific products or specific manufacturers, and the overall web page design is incredibly user-friendly.

  1. CAD Forum

cad forum web page

CAD/BIM block library, over 10,000 blocks and shares tips for AutoCAD and Revit 2017. A resourceful community and a lot of other supplementary things are also included in this website.

  1. Modlar

modlar web page

Mostly specialized in manufacturer-specific products, required signing-in to download files. Boasts a long list of different categories for its objects and an overall nice, clean design.

  1. SpecifiedBy

specifiedby’s web page

Self-acclaimed as the largest BIM content library in the UK, it has a lot of search filters and overall easy navigation. Also includes the ability to compare and/or bookmark the objects that you like, improving the overall user experience.

  1. ARCAT

arcat web page

Suitable for both CAD and BIM resources, does not need registration to gain access to different objects and families. There’s a long list of categories available, as well as a number of other supplementary resources.

  1. CADdetails

caddetails web page

Offers both SketchUp and Revit content, includes manufacturer-specific content with quite a diverse range of products. Can filter content based on master format or the product type, and consists of a number of different categories, as well.

  1. The National BIM Library

national bim library’s web page

A wide variety of generic BIM objects, still growing but has a lot of potential. Offers your regular Revit Family market package, with object filtering, various categories, and much more.

  1. TurboSquid

turbosquid web page

Mostly paid objects and components, but there is a variety of free items as well. The prices themselves are not steep, and it’s easy to filter out free objects. The overall filtering capabilities of this resource are quite impressive.

  1. BIM Catalogs

bim catalogs web page

Spot-on manufacturer-specific content only might be sometimes hard to navigate without knowing the manufacturer beforehand. On the other hand, there’s a lot of filtering that can be leveraged to make your life easier if you know the specific manufacturer that you’re looking for.

  1. Polantis

polantis web page

A lot of 3D content for Revit but families themselves are not “true” families because they’re mostly created in other 3D software and then imported to Revit family file format. Nevertheless, there’s a lot of free content in various categories, and you can even upload your own models if you want to.

  1. BIMbox

bimbox web page

One more site with UK origins and has a moderate amount of Revit BIM models available for free. Mostly focused on interiors, the majority of content is IFC compliant. There’s also the ability to add specific items to your own dashboard that is created when you sign up in your bimbox account.

  1. Diane Butterworth

diane butterworth web page

An assortment of Revit Families specifically for the workplace category (office furniture and similar). A number of free Revit Families is also available, as well as manufacturer-specific collections and a few other options.

  1. BIMstore

bimstore landing page

BIMstore is another answer to the question of “What is BIM in Revit?”, offering BIM-related content with three main formats: Revit, Microstation and ArchiCAD. Registration is required to download the content. The object collections are curated and changed regularly, and there’s a long list of manufacturers, each with their own BIM objects.

  1. RubySketch

rubysketch web page

Hosts a lot of SketchUp content, but there’s also an assortment of Revit families. A surprisingly wide range of products as well as the various filtering options like file types, brands, and so on. Each file can also be downloaded in a plethora of different software-specific file formats.

As you can see, there are a plethora of different resources that offer free Revit families, so it’s not that hard to find exactly what you need without paying for it.

About the author

James Ocean

BIM/VDC Specialist. James Ocean is Head of BIMspiration at Revizto and keeps everything moving onwards and upwards. From supporting and teaching our internal team as well as our clients, James shows us the ins-and-outs and how to best leverage Revizto to maximize workflows, cut costs, and get all types of projects through the finish line.

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What is BIM in Revit Context? Top 20 Sites of Revit BIM Models. The list of sites that offer free Revit Families is surprisingly long. However, many people do not know the difference between BIM and Revit. This article discusses both of these questions. 2020-12-23
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