So What is an LOD Anyway?

Submitted by hastihejazi on Fri, 01/14/2022 - 19:13
{"version":"0.3.0","atoms":[],"cards":[],"markups":[["i"],["a",["href","https:\/\/\/resources\/69541-guide-instructions-and-commentary-to-the-2013-aia-digital-practice-documents"]],["strong"]],"sections":[[1,"p",[[0,[],0,"January 14, 2022"]]],[1,"p",[[0,[],0,"Long gone are the days of pencils, erasers, mylar, rulers,\ncompasses, and T-squares. Most construction projects these days are designed digitally,\nthrough a process known as Building Information Modeling, or \u201cBIM\u201d. When using\nBIM, it is important to have a very clear set of rules in place so everyone on\nthe project knows what the Model, and the \u201cModel Elements\u201d in a Model (such as\nan HVAC unit, a wall, an elevator, a door, a window, etc.), are meant to\nconvey. This is where LODs come in."]]],[1,"p",[[0,[],0,"LOD stands for \u201cLevel of Development.\u201d LODs range from LOD\n100 to LOD 500, with LOD 100 being less developed and LOD 500 being more\ndeveloped. The Level of Development (LOD) framework allows the Project\nParticipants to understand the progression of a Model Element from conceptual\nidea to precise definition and description. The LOD of a given Model Element\ninforms the other Project Participants about how developed the information is\nexpected to be, and the extent to which that information can be relied upon, at\na particular point in time in the development of the Model. Identifying the LOD\nfor each Model Element, along its development path, helps prevents other\nProject Participants from using the Model Element in an unintended manner or\ninferring greater precision than the Model Element Author intends."]]],[1,"p",[[0,[],0,"You might be thinking \u201cCan\u2019t I just tell how developed a\nModel Element is by looking at it?\u201d Not always! This is why LODs are an\nincredibly important aspect of a Model. Since many different Project\nParticipants can have access to a Model, LODs are the way by which the person\nModeling (the \u201cModel Author\u201d) tells everyone how much they can rely upon their\nModel Elements. By way of example, think of a door. When you zoom into the\nModel, this Model Element might look very developed \u2013 the Model Author included\nhinges, a handle, a deadbolt, and a color. But \u2013 "],[0,[0],1,"and here\u2019s the important\npart"],[0,[],0," \u2013 when it comes time to place an order with the door manufacturer, how\nwill you know whether all these components should be included in your order, or\nif they\u2019re just generic placeholders? An LOD gives you your answer. In this\nway, two Model Elements might look identical, but you can extract much\ndifferent information when you include the LOD. LODs should be defined in your\ncontract, so consult your contract to determine how your LODs are defined and\nhow they are intended to be used on your project."]]],[1,"p",[[0,[],0,"You can read more about the AIA\u2019s Digital Practice\nDocuments, including a deep dive into LODs, in the "],[0,[1],1,"Guide,\nInstructions, and Commentary"],[0,[],0,"."]]],[1,"p",[[0,[2,0],2,"AIA Contract Documents has provided this\narticle for general informational purposes only. The information provided is\nnot legal opinion or legal advice and does not create an attorney-client\nrelationship of any kind. This article is also not intended to provide guidance\nas to how project parties should interpret their specific contracts or resolve\ncontract disputes, as those decisions will need to be made in consultation with\nlegal counsel, insurance counsel, and other professionals, and based upon a\nmultitude of factors. "]]]]}
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