3d stairs drawing step by step
Peradventure you lot know the power of Revit software's Family Editor but you've avoided information technology or it has intimidated you lot until now. Wait no more. This commodity will introduce y'all to the basics of Family unit Editor. One time you lot get past beingness intimidated, you will find that while Family unit Editor is extremely powerful, it tin actually be cracking fun. In this short introduction, nosotros volition create a Revit component family complete with constraints and parameters. Don't worry if you don't know what a constraint or parameter is — we'll cover that also. Whether yous've never worked in Revit software before, or you've used Revit software for a while merely you've simply avoided Family unit Editor, this article will teach y'all the nuts of the Family Editor in a simple step-by-step fashion. We'll work through the creation of a Revit component (loadable) family unit complete with constraints and parameters.
Fifty-fifty if yous are completely new to Revit, you accept no dubiety discovered how important families and the family editor are to your success in Revit. Everything you create in Revit is function of a family — consequently, understanding families and what it takes to dispense them is a vital role of learning the software. Offset with the difference between Organization and Component families, this section volition explore the disquisitional concepts and terminology. We'll also have a quick wait at what is provided in the Revit libraries and learn about family templates. Following this brief introduction to terminology, the tutorial will focus on the component family creation procedures and strategies — presented in detailed stride-past-pace procedures. Using the concepts and techniques covered herein, yous volition learn how to begin tapping into one of the most powerful aspects of the Revit software package — the Revit Family Editor!
Everything in Revit Is Part of a Family unit
In gild to go started with the family editor, information technology is important to understand some basic concepts and terminology. All elements in the Revit platform are part of a family and they fit into a clearly defined bureaucracy. At the acme level of this bureaucracy, are Categories. Categories are pre-divers within the software and cannot be added, deleted or renamed. A wide variety of categories are included in Revit and distributed among a few overall master groups including: model and notation (but there are a few others). Model Categories include all elements that comprise your building model such as: Walls, Doors, Floors, Stairs and Beams. Annotation categories include items like Text, Dimensions and Tags. Categories are past definition very wide. It would not be enough to merely accept a Walls or Doors category. These items come up in all shapes, sizes and behaviors. Therefore, the adjacent level of the hierarchy is the Family. All Revit elements vest to a family. Families are all-time thought of simply as a drove of like items sharing the same overall look and behavior. Revit includes many families such as the "Basic Wall" wall family, the "Single-Flush" door family and many annotation families like "Text" or "Linear Dimension Manner." Fifty-fifty the views themselves like floor plans and sections are system families in Revit.
Families branch into two major kinds based on their beliefs: the System Family and the Component (Loadable) Family. System families include anything that is built into the software and cannot be manipulated by the user in the interface. This tin can include model components like walls and floors, but also includes equally important items like flooring plans, project data, and levels. Arrangement families cannot be created or deleted. Their properties are pre-defined at the "factory." However, most system families like walls, floors and roofs can have more than than one: Type. A type is our next level or hierarchy in Revit. Call up of it as a collection of variables (sizes, materials or other settings) saved to certain values and given a proper noun for ease of reuse. A Type provides a convenient mode to switch several variables of a family unit at once. A family can comprise i or more than types; each with its ain unique user-editable settings. And then while for example we cannot create or delete wall families, we can add together, delete and edit the types associated with each of the provided wall families. For example, "Basic Wall" is the most common wall family. In the out-of-the-box template files, there are several predefined Basic Wall types such as: Outside — Brick on CMU, Generic 6″ and Interior — five ½″ Partitioning (1hr). The Bones Wall definition but means that it is a layered wall that has the same structure along its entire length and height. The actual make-upwardly of this structure can vary widely from blazon to type every bit the names noted here imply.
Other system families vary considerably in their specific composition and features, just at the conceptual level they share the same basic characteristics: the overall behavior of the object is divers by the organisation and cannot be redefined; even so, the specific object-level parameters can be manipulated via the creation and application of type and/or instance variations.
Equally already noted, system families include both things that are function of the concrete model in your Revit projects (like walls, floors and roofs) and other items that are not (like views, project data, and levels). To distinguish further, system families that also happen to exist model elements are referred to as "Host" elements. A Host is an element that can receive or support or provide construction for other model elements. Hosts are often required for many of the component families like doors or windows which crave wall hosts, or lighting fixtures which oft require ceiling hosts.
Component (or "Loadable") families include everything that is non a system family. Many component families are model elements, but they can also exist annotation or other non-model elements also. Component families can exist "host-based" (require a host), or they can be "free-standing" (not requiring a host). Revit users tin can create, delete and modify component families (and their associated types). This is accomplished in the family unit editor and each family thus created can exist saved to its own unique file (with and RFA extension). Like system families, component families can contain one or more than types. They tin can also have example parameters that vary from instance to instance (non part of the type). Unlike system families, they are completely customizable by the finish user in the family editor.
Loadable component (model) families are the primary focus of this article.
In add-on to the system and component families, there is a 3rd type of family unit in Revit called the "In-Place Family." In-place families are similar to component families in terms of creation, editing and strategy. However, an in-place family is created directly inside a project (not in a separate family file as component families are) and information technology cannot exist exported to other projects. Further, you can create in-place versions of many system family categories similar walls, roofs and floors. This adequacy allows the creation of custom or gratuitous-form shapes not otherwise possible in pre-defined arrangement families. You should only consider creating an in-identify family for elements that are unique to a particular projection with piddling possibility that you will ever want to reuse them in future projects. Also, in-place families as already noted, offer the merely means to "customize" certain organization families like walls or roofs. In-identify families therefore prove effective for modeling unique existing conditions or very specialized and unique design scenarios. Even so, wherever possible, consider if the detail you wish to create can be built using either predefined organisation elements or a component family first before resorting to an in-identify family. Often creating an in-place element seems like a good idea at the fourth dimension only to later be the source of regret. We volition not be exploring in-place families in this commodity.
Revit and Family Terminology
Hither is a cursory summary of Revit for Architecture disquisitional terminology. The illustration is borrowed from the online help file a few releases back. There is a unlike version in the current help organization, but I prefer this illustration as I believe it still does the best chore of summarizing all of the various kinds of elements in the Revit environment.
Chemical element— Anything in your Revit Architecture projection. (Elements in italic can be created and edited in the family editor.)
Model Chemical element — Something that represents the actual geometry of your building.
Host Element — An element that can receive or support or provide structure for other model elements (congenital in-identify structure).
Component Element — An item inserted into a projection (items that are pre-manufactured, purchased and installed). Can be freestanding or crave a host.
Host Based Component Element — A Component Element that must be inserted on or into a Host.
Freestanding Component Element — A Component Chemical element that tin be inserted independently without a Host.
View Element* — An item in the Revit interface that allows you to run into and interact with all other elements. Views accommodate to the characteristics of typical architectural drawing types like plan, section, summit and schedule. Some View Element families allow customization of Types, many exercise not.
Datum Chemical element* — Include Levels, Grids and Reference Planes. These are used plant project context, limits, extents and the like. Datum Elements provide guidelines and limits for other elements within a project and can besides include annotative qualities. The families and types of datum elements cannot be edited.
View-Specific Element— Something that is used to document, describe or embellish a view of your projection. View-specific elements exercise non appear in any other views automatically. If you lot wish to repeat view-specific items in other views, yous tin copy and paste them.
Detail Element — A two-dimensional family typically representing a model element merely at a level of detail that would be impractical to model. Detail elements appear only in the view in which they are added. Detail Elements remain their bodily size as created and practise non adjust scale with the view.
Notation Element* — Include text, dimensions tags and symbols. These items are view-specific (appearing only in the view in which they are added) and are used to notate, embellish, depict and document design intent inside a Revit Architecture project. Annotation elements maintain a constant size relative to the plotting scale of the view in lodge to maintain a abiding size relative the sheet on which they are placed.
*Level and Filigree head tags, Department and Elevation head tags, model element Tags and Symbols (Generic Notation families) tin be created and modified in the family unit editor. Text and Dimensions cannot.
Many of the branches in the diagram contain both system and component families. Naturally for a discussion on the family editor, we are therefore express to considering just the non-system families. This includes all items on the Component Elements model branch, Detail Detail families on the Particular Elements co-operative, Loaded Tags on the Annotation Elements branch and a few other miscellaneous elements also similar titleblock families or view tags and level head symbols.
Family Libraries and Resources
The first pace to working in Revit in general and building families in specific is to become comfortable with this list of terms. Go on it handy as reference equally y'all go on. But before you embark on the process of building family content, it should exist noted that there are many families included with the software and many more resources available online. A quick search in Google will plough up hundreds of sites containing tips, tricks and downloadable content. Do take the time to explore the out-of-the-box offerings and some of many bachelor sites likewise if you lot accept not already done then.
Equally has been noted, you cannot create or delete system families. All system families volition already be in your project file. To add types that are non nowadays to a system family, you either have to duplicate an existing blazon, rename and modify information technology, or import i from some other project. To import from some other project, you can employ Transfer Project Standards (Manage tab) or copy and paste.
To utilize a component family from outside the project in your current projection, you tin can load it from a family file (RFA) or re-create and paste from another project. To load a family file, use the Load Family unit button on the Insert tab of the ribbon, or the contextual ribbon tab when a control is active. For instance, if you click the Door tool (Compages tab), the Load Family push will appear on the Alter | Place Door tab. This lets you load a door family and place information technology all in the same procedure. Too, on the Insert tab of the ribbon, on the Autodesk Seek panel, you lot tin can run a search from directly in Revit of the online Autodesk Seek website. You can also type seek.autodesk.com into your web browser.
In many cases, a family unit similar to the i you lot wish to create will already exist somewhere in the production or online in one of the myriad online resources. Nigh companies also maintain their own libraries of part standard content on their internal servers. Check with your CAD/BIM manager to see what your firm offers.
The Recommended Manner to Become Started
Applied wisdom says that it makes more sense to begin with something in the library and either use it as-is, or modify it to suit your needs. Typically, this will be easier than starting from scratch. In your day-to-twenty-four hour period work when yous are up against deadlines, this is by far the all-time approach. Just be certain to take a niggling fourth dimension to "vet" any unknown or newly downloaded content to ensure that information technology meets your function standards before using it on a live project.
If yous are new to creating families in Revit, and then I recommend that you lot create your kickoff few familiesfrom scratch. By edifice the entire family yourself, you will learn more than simply modifying i. Furthermore, families can include very complex parameters and constraints that oft link to i another in a chained and sometimes complex or fifty-fifty convoluted fashion. Even for seasoned family content authors, it can be difficult to dissect these oftentimes complex relationships. Therefore, to avoid becoming discouraged, information technology is recommended that you start with a minor unproblematic example and piece of work your mode to more complexity over time.
For example, don't showtime with a Door or Window family. These are more complex than they at first seem. Begin with something small, simple and boxy: like a simple article of furniture or equipment.
Family unit Creation Procedures
The basic process for creating a family is as follows: decide what blazon of family you lot need. This will include deciding what information technology should await like, how much detail to include and whether the graphics or level of detail should change in different views. Yous can start by sketching out (yep on paper) the family yous intend to create and make notes about its requirements.
Next, create a new family unit file from the appropriate template or open an existing family file similar to the i yous wish to create and save equally. The choice of family template is important. The templates included with the software are provided by Autodesk with the product. Each contains basic settings, behaviors and in many cases some simple geometry or reference planes. The geometry included (like a sample length of wall) is only for reference and does not get inserted with the family when used in a project. While it is possible to modify the category of family unit after creation, it is best to choose wisely at the start. Try to choose the most appropriate category selecting: Generic Model.rft only if no other suitable category can be determined. Unlike category, the hosting behavior of a family file cannot be changed subsequently it is created. So if you are not certain that you want the family you are creating to crave a Host, it is safer to build it without one. In other words, if you lot choose Casework wall based.rft equally the template, the family unit you create will always require a wall in order to be inserted. If you lot think you might similar to employ the chiffonier as a freestanding piece of casework, cull the Casework.rft template instead. You tin ever use the Align tool to move the not-hosted cabinet to a wall confront later. You cannot later decide to detach the hosted casework item from its host wall.
Once y'all have decided what you desire to build and created a new family file based on an existing file or the advisable new template, you are ready to create your family reference planes, parameters and geometry. It is normally all-time to start with the framework. If yous begin with an existing family, delete annihilation yous don't need commencement. And so in both existing and new families, add the Reference Planes yous will need. Reference planes provide the skeleton for your family. Some templates already comprise basic reference planes. Y'all tin can use these as-is or modify them. The proper process is to manipulate or create reference planes, optionally constrain or assign parameters to these planes, and then create geometry and lock information technology to the reference planes. In this style, the reference planes really drive the geometry. This is the almost reliable, best-practice style to build your family files.
One time you accept laid down your reference plane framework and assigned parameters and constraints, test the family past "flexing" information technology. This is washed in the "Family Types" dialog which you tin can access from the Family Types button on the ribbon. To flex the model, simply try different values for each parameter and then employ. If the framework moves the style you wait, everything is adept. Otherwise, undo, and try to ready the problem. We will see several examples below.
When all geometry and parameters have been created, applied and flexed, you are ready to relieve the file and load it into a examination project (below I utilize the 100 Sandbox.rvt file for this purpose). If necessary, return to the family editor to make whatever adjustments and then reload, otherwise your family file is complete.
Constraints and Parameters
In its simplest form, a family can be a static graphic or symbol. Such a family would exist drawn the way information technology was intended to look regardless of the circumstance. The out-of-the-box Chair-Breuer is 1 such example. There are no types or user-editable dimensions in this family. Even so, one of the things that make families then powerful is their ability to utilise variables to assistance them adjust to varying circumstances. This is done using constraints and parameters. While each of these terms has several possible meanings, in the context of Revit the post-obit definitions are suitable to our discussion.
Constraint — is a fixed dominion that tin only be manipulated by editing the family file.
Parameter — creates a rule or relationship that has user-editable properties.
Essentially each of these is a rule practical to some part of a family unit'south geometry or behavior, but a constraint cannot be manipulated by the terminate user, and a parameter tin can. For example, if yous were working with a door family and you wanted to ensure that a vision panel was 10" from the door border regardless of the door'due south width, y'all would employ a constraint within the family editor to achieve this. On the other hand, if you desire to allow the aforementioned door family to take varying (flexible) sizes for height and width of the vision panel, these would be parameters. Past making vision panel width and height parameters and using them to drive the geometry inside the family, the user can exercise much greater control than would otherwise be possible. All the same, the location of the vision panel with respect to the door would be fixed.
Solid and Void Grade Geometry Types
Geometry in families consists of solid and void forms. Solid forms represent the actual physical parts of the family unit and void forms are used to carve away portions of the solid forms. For instance, y'all could create a solid course box, and then utilise a void class to cut a pigsty in it like a donut. Both solid and void forms come in v varieties. These include: Extrusion, Blend, Revolve, Sweep and Swept Blend (encounter Figure 1). Nosotros will use an extrusion and a blend in the tutorial.
An extrusion is a sketched shape pushed forth a distance perpendicular to the sketch airplane. A blend is similar have that instead of a single shape, you have both a peak and a bottom shape and the 3D form transforms (or blends) from i to the other forth the perpendicular height of the form. A revolve spins a sketch shape around an centrality. The revolve can exist a total 360-caste or a partial arc. A sweep pushes a shape (sketch or loaded profile) along a sketched path. The shape is perpendicular to the path. A swept blend combines features of both the blend and the sweep. The class morphs between 2 profiles or sketches equally in a blend, merely can follow a nonlinear path. Unfortunately, the swept blend path tin can only contain 1 segment unlike the sweep. This means that complex forms crave a spline path. Using a combination of solid and void forms yous tin can create nearly whatever three-dimensional shape.
Family Types
As nosotros accept already pointed out above, families can incorporate types. A type is a saved and named collection of values for the parameters inside a family. Y'all can add every bit many types every bit you lot wish. Types can be added within the family editor or even later on in the projection.
Nested Families
You can build circuitous forms using a combination of the solid and void forms available in the family unit editor as noted above. Nonetheless, managing a circuitous form in a single family tin can become cumbersome. In many cases, it makes sense to suspension your object into discreet parts and build the parts as separate families. Yous can and so insert these simpler families into some other family that represents the whole. This is referred to as nested families. When you manage your complex families in this style, you lot proceeds more control and flexibility.
Subcategories and Visibility Parameters
Any family you create or load from a library will belong to a certain category. Each of the elements within the family unit can belong to a subcategory within the family. Subcategories provide an extra level of visibility and graphical control over the parts of a family. For instance, in the door families included with the software, there are several pre-divers subcategories. Ane such subcategory is the Plan Swing. Using this subcategory, it is possible to brand door plan swings a lighter pen weight across a project regardless of the specific family. This helps enforce standards and simplifies such changes.
Visibility parameters are another way to control elements within a family. Sometimes it is useful to see part of the family unit just in certain circumstances. For case, you lot could create a casework family unit where hardware was an optional brandish component. In this case, a visibility parameter would be assigned to the hardware elements within the casework family and the visibility parameter could then exist toggled on or off by the user depending on whether or not the needed to show it in a given situation.
Tutorial
That completes the introductory materials. Download the class handout for the tutorial, which allows yous to follow forth with complete step-by-footstep instructions. Explanations are given in line with the steps, merely the steps are highlighted to assist them stand out. Many of the concepts discussed in the preceding topics will be showcased in the tutorial.
Source: https://www.autodesk.com/autodesk-university/article/Revit-Families-Step-Step-Introduction-2018
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