Chapter 13Creating Walls and Curtain Walls

When modeling in a building information modeling (BIM) process, different levels of information are required at specific stages of the project. A level of development (LOD) specification is a resource that architects can use to plan and deliver the correct geometry and information to the project team, whether they be the owner, contractor, or other consultants. You can basically think of it as a spreadsheet of model requirements. According to the American Institute of Architects (AIA) document “G202-2013 Project BIM Protocol Form,” there are five levels of model development, ranging from 100 to 500. If you examine excerpts from the model content requirements describing each LOD for the design professions—LOD ...

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