Understanding Families and Level of Development (LOD) - Family - Handout LOD Specification 2015 - Engineering Assignment Help

Assignment Task:

“Family: families are classes of elements in a category. A family group elements with a common set of parameters (properties), identical use, and similar graphical representation. Different elements in a family may have different values for some or all properties, but the set of properties—their names and meaning—is the same. For example, 6-panel colonial doors could be considered one family, although the doors that compose the family come in different sizes and materials. There are 3 kinds of families: 

System families 
System families are pre-defined within Revit Architecture and comprise principal building components such as walls, floors, and roofs. The basic walls system family, for example, has wall types that define the interior, exterior, foundation, generic, and partition wall styles. You can duplicate and modify existing system families, but you cannot create new system families. System families include walls, dimensions, ceilings, roofs, floors, and levels. They are not available for loading or creating as separate files. Revit Architecture predefines the set of properties and the graphical representation of system families. You can use the predefined types to generate new types that belong to this family within the project. For example, the behavior of a wall is predefined in the system. However, you can create different types of walls with different compositions. System families can be transferred between projects. 
Standard families: hosted and not hosted. Now called “loadable families.” Loadable families can be loaded into a project and created from family templates. You can determine the set of properties and the graphical representation of the family. 
Standard component families are loaded by default in project templates, while many more are stored in component libraries. You work with the Family Editor to create and modify components. You can either duplicate and modify an existing component family or create a new component family based on a variety of family templates. Family templates are either host-based or standalone. Host-based families have components that require hosts. An example is a door family hosted by a wall family. Standalone families include columns, trees, and furniture. Family templates assist you in creating and manipulating component families. Standard component families can exist outside of the project environment and have a .rfa extension. You can load them into projects, transfer them from one project to another, and save them from a project file to your library if needed. 

Objectives 

1. This set of exercises is to solidify your understanding of families and basic parameters. This assignment is meant to start easier and get harder as you get more proficient with the commands; the points will be distributed accordingly. Step 6 is the most difficult and is worth the most on this assignment. 

2. In order to complete the final part of the assignment, you will need to understand the handout LOD Specification 2015.pdf that is included with this assignment. Please review its contents so that you understand what level of development is. It also helps if you read pp. 29 - 33 in the Routledge book before doing step 6 of this assignment. 

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