As-built drawings are crucial pieces of information, and they should be recorded in every project. They may also be referred to as record drawings. These special drawings show how the contractor actually built the structure identified in the project. In addition to this, they show what types of changes were made during construction. Completed markups and transferred revisions must be copied to the final as-built drawings very carefully. The final drawings include field changes, modifications, design changes, extra tasks and any other type of change that might have been made during the construction process.
Helpful As-Built Drawing Recording Tips
Anyone who must complete this task should review the as-built drawings frequently to ensure accuracy. At all times, there should be at least one set of as-built drawings available on the job site. If any unspecific wording is used in the drawings, substitute such words with more precise details. Any installation, fabrication, erection, sizing, location and other data should be as exact as possible.
It is also important to detail the contractor's design systems. Grade modifications, inverted elevations and other data about earthwork or piping should be included. If any unexpected obstructions are encountered during the project, be sure to record those also. When additional sheets of paper are needed, it is helpful to use paper that is identical to the type of paper being added to or replaced.
For changes made during the final inspection, it is helpful to employ three colors in the as-built drawings. Be sure to include a legend that indicates what each color means. Red indicates deleted items, blue indicates special information and green indicates added items.
Instead of referring to related documents, refer to specific actions. Describe any changes with a written explanation, and always use clear lettering. If revisions and corrections are made, add relevant details to general notes, affected view page, specific notes, schedules and profiles. Be sure to update the index sheet to reflect recent changes. When making any notes about underground features, be very specific. After finishing the drawings, be sure to stamp the title sheet properly. Include the contractor's name, the current date and any other necessary information. If any sheets have been modified in any way, label them as revised as-built. Make a final CD that includes all of the as-built drawings. In some cases, contractors may request a monetary retainer until the drawings have been submitted. For answers to any questions, discuss concerns with an agent.