If a mechanical/electrical/plumbing engineer is going to provide as-built drawings for systems, the total cost could be as high as $2 to $2.50 per square foot. For example, just to field-measure and prepare architectural backgrounds can cost 40 to 45 cents per square foot.
I like the idea of having all maintenance operations tied into a system ensuring all required changes to drawings and manuals are made immediately.įor older buildings lacking good or up-to-date documentation, generating accurate as-built drawings can be expensive and problematic.
Going forward, the owners and operators of those buildings must have a process for keeping that documentation current. The documentation requirements now common on new construction projects-especially commissioned ones-are very detailed and specific.
They should be the basis for the design of future improvements, reduce the time and cost of due diligence should a building be sold, and be critical to developing emergency operations plans. These drawings should serve as a reference for efficiently operating and maintaining a building and provide an accurate description and the location of all major equipment and devices. "As-builts," as they’re known, shouldn’t be limited to changes to architects’ drawings made during construction they should include all changes made by contractors and in-house maintenance staff, even minor ones, such as moving and upgrading light fixtures and adding a HVAC drop.
How often do we go on a site visit and find there are no as-built drawings? Not only are there no as-built drawings, but there is also no original permit set of plans! Because most of my work is with existing buildings, many of them older buildings, I’ve become accustomed to this.
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