What is an As-built drawing?

Answer 1

The phrase "as-built" in construction is equivalent to "as-is." Drawings deemed "as-built" are thus drawings that show the EXISTING conditions as they are, or "as-is" — these are the actual existing conditions as opposed to designs or proposed conditions, which are more common for the content of drawings. As-built drawings can be documented either after or during construction. When it's after construction, a qualified technician collects accurate data to reconstruct the drawings. When it's during construction, the design drawings are redmarked for editing. For example, if you are a Contractor installing sewer pipe in the road at a buried depth of 5.00' and you suddenly encounter an abandoned pipe and must change your buried depth to 6.50' , then you should be responsible for the as-built conditions. The installing contractor should redmark his set of drawings to show how the sewer line was actually installed so that a draftsman can later edit the drawings into an "as-built" set.