In 2008, the American Institute of Architects released its first BIM contract document—AIA E202 Building Information Modeling Protocol Exhibit—which outlined five “levels of development” (LOD 100-500) ...
Contractors have no way of knowing whether they can rely on the designer's LOD 300 information for layout in the field, for example. For the LOD spec, "we tried to be specific per element, regarding ...
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