We have drawings that are available for the building in CAD (computer added drafting); can I assume they are accurate enough to measure the building?
The simple answer is no. Because the drawings are drawn in Cad does not make them correct. The drawings are only as accurate as the draftsman that produced them. Another common misconception on the accuracy of CAD drawings is that they are more accurate than that of the old pencil and paper drawings. They are not. Stevenson Systems, Inc. uses the dimensions on the drawings, not the graphical depiction shown on the drawings, when measuring. Furthermore with the production of CAD drawings and modern construction techniques, many of the construction drawing are missing key elements of information that are necessary to measure a building. These key elements are generally found on the manufacturer’s specifications and dimensions that are rarely found within the CAD drawings.