Besides being very costly and inefficient, this process is prone to errors and almost always leaves the owner with two disconnected sets of data at the end of a project. The design team would continually issue addendums, revisions and bulletins, which the fabricators would reference to adjust their drawings. In a simple 2D world this fractured environment, although very inefficient, can be managed. From this moment on, you have a fractured model environment. The fabricators will begin developing fabrication level data from that original dataset. Often a project team will hand over a copy of their 2D and 3D data to the fabricators as soon as the fabricators become involved in the project. This disconnect occurs as soon as the project fabricators become involved with the project. For years a disconnect has existed between design and construction documents.
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