The database incudes information about a project at different building life cycle phases from concept to construction to decommissioning. This may be called 4D CAD where time is the fourth dimension.
How Revit Works :-
Revit utilize .RVT files for accumulating BIM models. A building is constructed with 3D objects to generate walls, floors, roofs, structure, windows, doors and other objects as required. These parametric 3D building objects (windows or doors) or 2D drafting objects (surface patterns) are recognized as "families" and are saved in .RFA files, and imported into the RVT database.
A Revit model contains a single database file characterized with plans, sections, elevations, legends, and schedules. If any alteration occurred in one representation of the model (a plan) are circulated to other representation of the model (elevation) as alteration to each representation of the database model is provided to one central model. As a result, Revit drawings and schedules are constantly coordinated concerning the building objects exposed in drawings.
Revit can carry out conflict detection when different components of the building are taking up the same physical space. Like many BIM-software, Revit is compatible with open XML-based IFC standard which facilitates a general contractor to involve BIM-based workflow from the diverse discipline consultants of a building project.
Modeling with Revit :-
Revit includes a work environment that lets users to extrude, revolve, trace the path of, or morph shapes drawn on a 2D plane so as to create them into 3D objects, along with perform these actions already made solid objects to cut or reorganize them.
The users are able to generate realistic and precise models of objects, as well as import premade models from other programs. The reproductive components of an object are retained to be parametrically controlled.
Revit Families :-
Revit families are the pre- made reusable objects contained within a Revit model. These objects are compiled with different parameters & parallel visual graphical representation with engineering exactness related to an entire class or group (Generic). Revit families are made with dimensions controlled by parameters (parametric) facilitating users to revise the component by altering predefined values such as height and width. Revit families generate schedules & establish LEED ratings, lessen building costs & denote products directly in your model. Revit family consist of content in 3D & 2D Revit, 3D dwg & 3ds Max file formats.
It includes categories like walls, roofs, ceiling, stairs, railings, ramps, mullions, curtain panels and topography surfaces. Some predefined types are utilzed to form these families associated with each project. These families also contain creation methods specific to the type of family. The user will be able to generate new types of system families by replicating accessible types and editing their parameters.
These families will be formed outside of the project environment by means of the family editor. They are accumulated in an external library & will be loaded into a project for utilizing with any point. Every standard family refer to a specific Revit category so that when it’s loaded into a project, to approves the graphic rules defined for its category in the object styles dialog while loaded into a project. This will keep uniformity of graphic all through the project.
This also guarantees that when you schedule a category you will get all elements that belong to that category. Standard families have their own file format extension (.rfa) and can be stored outside the project environment for later use in other projects.
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