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As-built Documentation Explained

graphic of As-built Documentation Explained
As-built Documentation Explained

What is as-built documentation? How is it used? Why should you care? Writing for NavVis, independent technology writer Sean Higgins dives into the details.

What is as-built documentation? As-built documentation is a drawing or a 3D data set that depicts the building as it was actually built.

An as-built data set includes all modifications, additions, and other changes made during the construction process. It will also include the exact dimensions and surveyed locations of all building elements, including the facade, features such as doors and windows, and building systems like pipes, ducts, and cables.

Why is as-built documentation necessary?
The finished structure never matches the design model perfectly.

This happens due to a combination of real-world challenges like budget changes, scheduling squeezes, and the “surprises” that require re-designs and re-work. Even the smoothest building process—and the most advanced BIM or VDC methodology—will produce a building that differs from the original design.

What is as-built documentation used for?
As-built documentation has many applications for your AEC clients, including:

General contractors, who need up-to-date records to demonstrate that they have produced the contracted work to the specified standards
Owners and facility managers, who need access to all the building’s historical data—from original design up to its current state—for detailed maintenance, operational tasks, and sometimes advanced simulation
Companies that work on the building in the future, for instance, contractors, who need correct measurements and schematics in order to perform renovations or improvements

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