Inspection lot → subdivisional → divisional → unit: how to organize and implement the acceptance of construction projects at all levels?


The construction project is divided into “inspection lot → subdivisional works → divisional works → unit works” and the method of gradual acceptance has been adopted and standardized by the industry.

Four unit project unit project quality acceptance, also known as quality completion acceptance, is the last acceptance and the most important acceptance before the construction project is put into use.

➤   After the completion of the subcontracted works in the unit project of the acceptance organization, the subcontractor shall conduct self inspection on the contracted projects and conduct acceptance according to the procedures specified in this standard.

For the general items of counting sampling, the primary and secondary sampling of normal inspection can be determined according to the unified standard for construction quality acceptance of construction engineering.

In case of construction quality problems, the construction unit shall rectify them.

Unit works shall be divided according to the following principles: buildings or structures that have independent construction conditions and can form independent use functions are a unit project; For large-scale unit projects, the part that can form independent use function can be divided into a sub unit project.

(4) The spot check results of main functions shall comply with the provisions of relevant professional acceptance specifications.

(3) The inspection data related to safety, energy conservation, environmental protection and main use functions in the included divisional works shall be complete.

➤   During the acceptance organization, under the organization of the professional supervision engineer, the project technical director of the construction unit can summarize the acceptance records of all inspection batches, report them to the professional supervision engineer for review after verification, and sign the quality acceptance records of subdivisional works by the project technical director of the construction unit after confirming that they meet the requirements, Then the professional supervision engineer shall sign and pass the acceptance.

➤   Acceptance contents: the quality acceptance of divisional works shall comply with the following provisions: (1) the quality of sub divisional works shall be accepted.

➤   Acceptance contents the quality acceptance of subdivisional works shall comply with the following provisions: (1) the quality of the included inspection lots shall be accepted.

One inspection lot is the smallest unit of project acceptance and the basis of quality acceptance of subdivisional works, divisional works and unit works.

The acceptance of subdivisional works is based on the inspection batch.

➤   Acceptance record the quality acceptance record of the inspection lot can be filled in according to Appendix E of the unified standard for construction quality acceptance of building engineering, and the original record of on-site acceptance inspection shall be provided when filling in.

When counting sampling is adopted, the qualified point rate shall comply with the provisions of relevant professional acceptance specifications, and there shall be no serious defects.

The engineer must be clear that the construction project quality shall be organized by the responsible party for project quality acceptance on the basis of the self inspection and qualification of the construction unit, with the participation of relevant units of project construction The quality of unit works and concealed works shall be subject to sampling inspection, the technical documents shall be reviewed, and the project quality shall be confirmed in writing according to the design documents and relevant standards.

After the construction unit receives the project completion report, the project leader of the construction unit shall organize the project leaders of supervision, construction, design, survey and other units to conduct unit project acceptance.

➤   Acceptance records unit project quality completion acceptance records, quality control data verification records, safety and function inspection data verification and random inspection records of main functions and appearance quality inspection records shall be filled in accordance with appendix h of unified standard for construction quality acceptance of building projects.

Divisional works shall be divided according to the following principles: it can be determined according to the nature of discipline and project location; When the divisional works are large or complex, the divisional works can be divided into several sub divisional works according to material types, construction characteristics, construction procedures, professional systems and categories.

The subcontractor shall complete the quality control data of the subcontracted project and hand it over to the general contractor.

(3) Since the main structure directly affects the use safety, building energy conservation is a basic national policy, which is directly related to the national resource strategy and sustainable development, it is stipulated that the project leader of the design unit shall participate in the acceptance of these two divisional projects, and the person in charge of the technology and quality Department of the construction unit shall also participate in the acceptance.

The chief supervision engineer shall organize the supervision engineers of all disciplines to conduct completion pre acceptance of the project quality.

(2) Quality control data shall be complete.

The general contractor shall send personnel to participate in the acceptance.

(3) Have complete construction operation basis and quality acceptance records.

➤   Acceptance contents: the quality acceptance of unit works shall comply with the following provisions: (1) the quality of the included divisional works shall be accepted.

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(2) The quality of general items is qualified through sampling inspection.

(2) The quality acceptance records of the included inspection lots shall be complete.

➤   Acceptance records quality acceptance records of subdivisional works can be filled in according to Appendix F of unified standard for construction quality acceptance of building works.

The acceptance of divisional works is based on the acceptance of all divisional works.

Subdivisional works can be divided according to main types of work, materials, construction technology and equipment categories.

The inspection lot can be divided according to the quantities, floors, construction sections and deformation joints according to the needs of construction, quality control and professional acceptance.

The professional supervision engineer shall organize the project professional quality inspector and professional foreman of the construction unit to conduct acceptance.

(5) The appearance quality shall meet the requirements.

After the completion of unit works, the construction unit shall organize relevant personnel to conduct self inspection.

➤   Acceptance organization for divisional works, the chief supervision engineer shall organize the project leader and project technical leader of the construction unit to conduct acceptance.

In the acceptance of subdivisional works, if there is doubt or objection to the acceptance conclusion of the inspection batch, corresponding on-site inspection and verification shall be carried out.

(2) Quality control data shall be complete.

➤   Acceptance contents: the quality acceptance of the inspection lot shall comply with the following provisions: (1) the quality of the main control items shall be qualified through sampling inspection.

Among the ten divisional works included in the construction project, the personnel participating in the acceptance can be in the following three situations: (1) except for the three divisional works of foundation, main structure and building energy conservation, the acceptance organization of the other seven divisional works is the same, that is, it is organized by the chief supervision engineer and attended by the project leader and project technical leader of the construction unit.

The project is divided into four parts: the recommendation of the high quality public number to the project management center, the recruitment of the central enterprises, the engineering technical knowledge, the construction management experience, and the official account..

(3) The sampling inspection results of safety, energy conservation, environmental protection and main use functions shall comply with the corresponding regulations.

After rectification, the construction unit shall submit the project completion report to the construction unit and apply for project completion acceptance.

➤ before acceptance, the construction unit shall complete self inspection, rectify and deal with the existing problems by itself, and then apply to the professional supervision engineer for acceptance.

(4) The appearance quality shall meet the requirements.

(2) As the foundation and foundation divisional works are complex, highly professional and related to the safety of the whole project, in order to ensure the quality and strictly control the quality, it is stipulated that the project leader of the survey and design unit shall participate in the acceptance, and the person in charge of the technology and quality department of the construction unit shall also participate in the acceptance.

➤   Acceptance records the quality acceptance records of divisional works can be filled in according to appendix g of unified standard for construction quality acceptance of building works.

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