Revit MEP Family Creation 16th November, 2022 Table of Contents 1 Overview of Family Creation 2 Parameters 3 Creating 3D forms 4 Creating MEP families 5 Creating Anotation Families Overview – Our Goal Families that will help us: Showcase objects close to the real view Present buildable 2D Sheets to site Ensure correct placement of MEP equipment and systems Detailed Equipment Schedule and Datasheet Perform engineering Calculations Carry out Automated Quantity and Cost Calculations Can aid ease of coordination Assist Project managers in project scheduling, monitoring and control Assist Facility managers in building and equipment maintenance Overview – Sample Information Overview – Our Goal Overview – Revit Element 2 What Drives a Revit family Geometry Connectors Parameters Formulas Family Template Types of Parameters FAMILY PARAMETERS Family parameters only exist within a Revit family. All Revit family templates (RFT) contain standard parameters that cannot be removed. Typically, family parameters are used to constrain the dimensional properties of a component, control the visibility of components, or material of modelled elements. PROJECT PARAMETERS A project parameter only exists within a Revit project. If a family is selected in a project, the parameter will be shown. If the family is opened for editing, it will not be available. An example of a project parameter would be a custom classification code. This would not need to be edited with the RFA file itself as it does not need to control geometry only scheduled in a project. SHARED PARAMETERS SHARED PARAMETERS ARE MAINTAINED IN A TEXT FILE AND CAN BE LOADED INTO ANY REQUIRED REVIT FAMILY FILES AND REVIT PROJECTS ALLOWING CONSISTENCY OF PARAMETER NAMING. CALCULATED VALUES Calculated values can be used to derive some schedulable properties in the project GLOBAL PARAMETERS Global parameters can control multiple components with the same parameter within a Revit project. Revit Family Creating MEP Families Family Creation Family Creation Creating 3D forms Creating 3D forms • Exercise 1 – simple 3D form 3D massing to which LOD As much as possible use generic families that still convey dimensional requirements. However, where necessary and/or generic families may not convey the actual LOD requirement, manufacturer’s families can be downloaded but with care to clean it up and remove unnecessary parameters, while company standard parameters are to be added Level Of Development LOD LOD 100 Model Element may be Graphically represented in the model with a symbol or other generic representation, but does not satisfy the requirements for LOD 200. Information related to the Model Element (i.e. cost per sqm, cooling per sqm of HVAC, etc.) can be derived from other Model Elements Level Of Development LOD LOD 100 Model Element may be Graphically represented in the model with a symbol or other generic representation, but does not satisfy the requirements for LOD 200. Information related to the Model Element (i.e. cost per sqm, cooling per sqm of HVAC, etc.) can be derived from other Model Elements Schematic Design stage Level Of Development - LOD LOD 200 – Approximate Geometry Model Element is graphically represented within the Model as a generic system, object, or assembly with approximate quantities, size, shape, location, and orientation. Non‐graphic information may also be attached to the Model Element. Preliminary design stage Level Of Development - LOD LOD 300 – Precise geometry The Model Element is graphically represented within the Model as a specific system, object or assembly in terms of quantity, size, shape, location, and orientation. Non‐graphic information may also be attached to the Model Element. Detailed Design Stage Level Of Development - LOD LOD 350 - Precise Geometry with Connections The Model Element is graphically represented within the Model as a specific system, object, or assembly in terms of quantity, size, shape, location, orientation, and interfaces with other building systems. Non‐graphic information may attached to the Model Element. also be Detailed Design stage including information for coordination Level Of Development - LOD LOD 400 - Fabrication-ready Geometry Model Element graphically represented within the Model as a specific system, object or assembly in terms of size, shape, location, quantity, and orientation with detailing, fabrication, assembly, and installation information. Non‐graphic information may also be attached to the Model Element. Construction stage (exact equipment has been agreed) Used for installation, The model can be used for sequencing of installation and capture of as installed information LOD Definition LOD 500 • LOD 500: This level is known as “AS-BUILT”. • In other words, it refers to a level in which the model is a close replica of the already built building. • This LOD generally contains 100% of the necessary information for Operations. • Regarded as an Facility Management (FM) model. • Geometry precision is not as important in an LOD 500 as it is on an LOD 400. • At this stage, FM data is more relevant than geometry. Summary - LOD Creating 3D forms – Complex Shape Creating 3D forms – Complex Shape Creating 3D forms – Complex Shape NESTED FAMILIES • Nested families in Revit are basically families inside of other families. • Shared nested families help save time and make workflows simpler and easier, especially when you're using families that are almost always put together or assembled together. MEP Connectors • Contains important information utilized in the design of MEP systems • Connectors can be face based or work plane based • The connector has an arrow that points in the direction of the other family that will be connected Creating MEP Family – System Connectors Creating Type Catalogs Type Catalogues helps create different family types in Revit without having to do it in the family It also help keep the model lighter Procedure: • • • • • Create the family and populate all parameters that will change according to varying type (do not populate parameters that need not change) Export family type as txt Open the Text file in excel csv file and add other types as may be required Save and change file format to .txt Import new family types Creating Annotation Families Creating Annotation Families Creating Annotation Families Creating Annotation Families Notes • An annotation is always a view specific element in 2D • Both generic annotations and tags have in common that they have a fixed dimension (absolute printing size) in the project while detail Items change of size depending on the scale of the view. • Annotation families can be classified into two groups: annotations that report data from the model (tags) and those that do not (generic annotations and detail items).
