As-built drawings are inconsistent with actual site conditions and, once archived, cannot reflect the true state of the works.

As-built drawings are inconsistent with actual site conditions and, once archived, cannot reflect the true state of the works.

As-built drawings are the foundational technical records for O&M management, repair and renovation, and alteration and expansion after a project passes completion acceptance and is delivered for use, and are also one of the core archival documents explicitly stipulated in the Code for Archiving of Construction Project Documents (GB/T 50328). Under current regulations, as-built drawings shall be prepared by the contractor synchronously during construction based on technical documents such as design changes, construction negotiations, and concealed works acceptance records, so as to achieve consistency between drawings and objects and conformity between drawings and actual conditions. However, in a large number of actual projects, significant discrepancies between as-built drawings and on-site physical conditions are a common phenomenon. The causes of this problem are manifold. First, design change management during construction is not sufficiently standardized; change instructions are often issued and executed in the form of verbal notices or temporary handwritten negotiation slips, and change information is not promptly transmitted to the personnel preparing as-built drawings. Second, contractors attach insufficient importance to the preparation of as-built drawings, often treating as-built drawing work as the final process before completion acceptance, failing to accumulate change records in normal times, and rushing to supplement drawings before the archiving deadline by modifying the original design drawings from memory and scattered partial records, making omissions and errors inevitable. Furthermore, the supervision units of some projects conduct as-built drawing review as a mere formality, failing to check as-built drawings item by item against design change orders, concealed works acceptance records, and on-site measured data. From the perspective of codes and standards, Section 4.2 of GB/T 50328 explicitly requires that as-built drawings be stamped with an as-built drawing seal, which shall include the contractor, preparer, reviewer, preparation date, and other contents, and that modifications to as-built drawings shall use leader-line annotation to indicate the document number and date of the change basis. From the perspective of operational impact, the direct consequence of inconsistency between as-built drawings and on-site conditions is that later O&M management faces numerous difficulties. When a building requires repair and renovation after several years of use, because the as-built drawings are inaccurate, the design unit must first conduct on-site survey and verification before issuing renovation drawings, increasing preliminary consulting costs and time costs. A more serious hidden risk lies in scenarios involving structural strengthening, fire protection renovation, and MEP pipeline maintenance that require accurate knowledge of existing engineering conditions, where erroneous as-built drawings may lead construction personnel to make wrong judgments and even cause safety accidents. At the cost level, although the workload of redrawing and modifying as-built drawings is not high, the indirect costs caused by unqualified as-built drawings—such as rectification for archival acceptance, penalties imposed by archival administrative authorities, and later renovation survey costs—far exceed the cost of drawing preparation itself. The core measure to solve such problems is to establish a synchronous update system in which as-built drawings accompany the entire construction process, with the project construction department designating dedicated personnel responsible for as-built drawing management, updating the corresponding as-built drawings simultaneously whenever each design change order and construction negotiation slip is issued, and with the supervision unit synchronously verifying the conformity of as-built drawings with on-site conditions during concealed works acceptance. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management. From the systems engineering perspective of engineering management, solving this problem requires the coordinated advancement of four dimensions: institutional design, process control, technical support, and cultural development. At the institutional design level, clear responsibility boundaries and operating procedures must be established, translating code requirements into executable job responsibilities and work standards. At the process control level, full-lifecycle quality supervision and dynamic correction must be implemented to ensure that the work results of each stage meet expected objectives. At the technical support level, information-based methods and intelligent tools must be actively introduced to improve the precision and efficiency of management. At the cultural development level, quality awareness and compliance awareness must be cultivated among all staff to create an organizational atmosphere that pursues excellence. Only by organically combining these four dimensions can the quality common problems and management chronic issues that repeatedly occur in engineering construction be fundamentally solved, achieving continuous improvement and excellent performance in project management.