As-built drawings are the documents that are prepared at the end of the construction process to reflect the built and installed conditions of the project. The as-built drawings should incorporate the design drawings as well as detailed drawings of the installation of the elements of each system (e.g., mechanical, electrical, plumbing, sprinkler and life safety, etc.) into a coordinated drawing reflecting the as-built conditions for the project. These documents are called for in the contract documents, and must be turned over to the owner in a timely manner for the owner to properly operate and maintain the building after acceptance and occupancy.
Many CM/GCs keep track of the as-built conditions by taking the design drawings, especially the architectural, structural, mechanical, electrical, plumbing, sprinkler, and life safety documents and marking them up with changes as they occur. These documents are often placed on the wall of the CM/GC's field office to allow the field personnel to mark them up and have an ongoing record of the as-built conditions. By doing this, one does not have to try to recapture from memory what changes were actually made. With today's technology, these documents are often developed and delivered as CAD files, thus being more environmentally conscious and making the documentation easily available to all. Each subcontractor should be contractually responsible for preparing their own as-built documents, and submitting them to the CM/GC for review, coordination with the other trades, and submission. Many contracts call for the submission
Recommendations for preparation of as-built drawings.
1. The preparation of as-built documentation should start from day one on the project with a set of marked-up drawings to reflect the as-built conditions, as the project is being built.
2. Keep a separate set of the contract documents in the CM/GC's construction field office, so that they can be marked up and used as living documents throughout the construction process.
3. Collect all approved shop drawings, catalog cuts, and equipment specification sheets.
4. Collect, compile, organize, and distribute documentation of the as-installed conditions for the equipment on the project and any modifications made to them.
5. Collect all of the coordination drawings prepared by the trades to coordinate the installation of their work and the established rights of way for each trade.
6. Have the subcontractors prepare the as-built documentation for their trade, as per the contract documents, which is often an AutoCAD file.
7. Submit a sample of one of the trades' as-built documentation to the consultants, for review, format, and approval, prior to finalizing all of the trades' as-built documents.
of these documents using AutoCAD systems, to facilitate the archiving, review, and distribution of the information. Exhibit 21-5 contains the checklist for the preparation of as-built documentation.
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