Process and documents for completion acceptance

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Process and documents for completion acceptance 1. Completion acceptance procedure: 1. Self-inspection – After the construction unit has completed the construction of a particular project (or sub-project) in accordance with the design documents and contract requirements, it shall organize relevant personnel to carry out inspections and acceptances (any issues found must be rectified promptly, especially ensuring that edges and corners are clean and well-maintained), and submit a project completion report to the client. (The completion acceptance report should be prepared as early as possible.) 2. The pre-acceptance supervision unit shall promptly organize professional supervision engineers to carry out a pre-completion inspection; once the quality standards specified in the design and contract are met, the supervision unit shall submit a quality assessment report to the project owner without delay. (Identify problems and address them promptly; have the organizational capability to rush work through. 3. Upon receiving the quality assessment report submitted by the supervision unit, the construction entity responsible for the project completion shall promptly organize the completion inspection of the individual project. The construction entity must submit the notice of project completion inspection, the inspection plan, a list of the inspectors, as well as all relevant project documents to the quality supervision office at least 7 working days before the inspection is scheduled. Once the relevant department at the quality supervision office verifies that everything meets the requirements, it will sign the notice of project completion inspection. Upon receiving the completion acceptance notice, the quality supervision station shall promptly inspect whether the project meets the conditions for completion acceptance, and inform the construction unit whether it is possible to organize the acceptance on schedule. Quality supervision personnel shall supervise the organizational format, procedures adopted by the construction unit for acceptance, and the compliance with mandatory standards for project construction. During the supervision of the completion acceptance of a project, if quality supervisors detect any violations of the regulations regarding construction project quality management or if the project quality does not meet the mandatory standards, they shall order the construction unit to make corrections or to organize another completion acceptance after such corrections have been carried out. After the construction unit completes the acceptance inspection successfully, the quality supervision station shall submit a report on project quality supervision to the competent construction administration department that commissioned the work within 5 working days. 2. Conditions required for the completion acceptance of a unit project: 1. Completion of all aspects specified in the construction project design and the contract. 2. There are complete technical records and construction management documents. 3. There are qualification certificates for the main building materials, building components, and equipment used in the project, as well as reports on the sampling tests conducted. 4. The inspection records related to safety and functionality for the various sub-projects within a unit (sub-unit) project must be complete; the results of random inspections on the main functional elements should comply with the requirements specified in the relevant professional quality acceptance standards; the visual quality must also meet the specified requirements. 5. All the issues ordered for rectification by the quality supervision station have been fully resolved. 6. Quality compliance documents signed separately by units such as survey, design, construction, and supervision. 7. Project quality warranty letter. 8. There are approval documents or permits for use issued by departments such as public security, fire protection, and environmental protection. 3. Items for inspection during the completion acceptance of the project 1. Roof: From top to bottom, from inside to outside or from outside to inside (1) Is the roof slope correct? Do the details such as water outlets, membrane joints, and flashing meet the relevant requirements? The slope within a radius of 500 mm around the water outlet should be no less than 5%; ideally, it should be 600–800 mm, with a depth of not less than 50 mm. It should also be coated with waterproof paint or sealing material, with a thickness of not less than 2 mm. (2) Are the roof ladders and access hatches installed in accordance with the design requirements? (3) Is the height of the roof parapet, as well as the construction of the cast-in-place concrete expansion joints and building deformation joints, correct? When there are no specific requirements in the design, expansion joints should be provided in exposed concrete structures such as cast-in-place overhangs and rain guards, with the spacing between these joints not exceeding 12 meters. (4) Are the roof vent pipes, exhaust pipes, and flue pipes installed in a compliant manner? The ends of the waterproof layer on the pipes should be secured with metal clamps and sealed with sealing material. The height at which the flue ducts and ventilation ducts protrude from the flat roof shall be not less than 0.60 m, and shall not be lower than the height of the parapet wall. The waterproof layer of the roof drain should be seated within the drain cup by at least 50 mm. When it is difficult to dry the roof insulation layer, venting measures should be employed. When a vent pipe is used as there are no specific design requirements, its diameter should generally not exceed 32 mm to prevent local heat bridging in the roof panels. On flat roofs that are frequently occupied, the drainage vent should be 2 meters above the roof surface, and a lightning protection system should be installed. (5) Does the insulation method for the parapet wall meet the specification requirements? The moisture content of the insulation layer must meet the specified requirements, and its thickness must be at least as required by the design. (6) Does the construction of the membrane waterproofing protection layer meet the specification requirements? Polymer-modified asphalt waterproofing membranes with a thickness of less than 3 mm must not be installed using the hot-melting method. The long-edge lap width of polymer-modified asphalt waterproofing membranes should not be less than 80 mm. (7) Are the roof ancillary structures in compliance with regulations? Roof truss layout, partial mezzanines, roof structure, energy efficiency and insulation, lightning protection and grounding, and so on. (8) Is the lightning protection strip on the parapet wall installed correctly? (9) Are the expansion joints in the roof surface layer or waterproof protective layer of the building in compliance with the specification requirements? (10) The roof design has been changed from a pitched roof to a flat roof structure; there are no relevant documents such as design changes. 2. Top floor: (1) Are there any signs of leakage or moisture accumulation on the roof? (2) Are there any structural cracks in the walls and roof? (3) Do the height of the handrail on the top floor staircase and the spacing between the railings meet the specified requirements? When the length of the horizontal handrail on the side facing the stairwell exceeds 0.50 m, its height should not be less than 1.05 m. Anti-slip measures should be taken for the steps. 3. Equipment rooms and pipe shafts: (1) Are the fire sealing measures in equipment rooms and pipe shafts in compliance with regulations? (2) Are the walls and floors in the equipment rooms and pipe shafts smooth and clean? (3) Are the pipe supports installed firmly and reliably? (4) Are the right angles square? (5) Does the equipment base meet the design requirements? 4. Middle layer (1): Are the height of the stair handrails and the spacing between the railings in compliance with requirements? Are the protective measures for low windows in accordance with regulations? When no specific requirements are specified in the design, protective railings at heights of not less than 1.05 m should be installed at areas exposed to the air such as building balconies, exterior corridors, indoor atriums, interior courtyards, walkable rooftops, and outdoor stairs (within 24 m height). There should be no gaps within 0.10 m above the floor or roof surface beneath the railings. In residences, primary and secondary schools, kindergartens, and other places where children are allowed to be present, the railings must be designed in such a way as to prevent children from climbing up them. When vertical bars are used as railings, the spacing between these bars should not exceed 0.11 meters. When there are no specific requirements in the design, the height of the handrail on indoor stairs, measured from the front edge line of the tread, should not be less than 0.90 m. When the length of the horizontal handrail on the side of the stairwell exceeds 0.50 m, its height shall not be less than 1.05 m. Anti-slip measures should be taken for the steps. When the clear height from the floor or ground to the window sill of exterior residential windows is less than 0.90 m, protective measures shall be taken. The clear width of residential corridors and passages in public areas should not be less than 1.20 m, and the local clear height should not be lower than 2.00 m. The doors of residential stairwells and vestibules shall open in the direction of evacuation. The guardrail glass should be tempered glass or tempered laminated glass with a nominal thickness of not less than 12 mm. The clear height at the landing of a building staircase should not be less than 2.2 m. (2) Are there any leaks in the bathroom and rooms requiring waterproofing? Bathrooms equipped with a radiant floor heating system must have two separate insulation layers (waterproof layers) as required by the technical specifications, and a water stop wall must be installed at the entrance to the bathroom. After laying the indoor waterproofing materials, it is necessary to conduct a water retention test. The water storage depth should be 20–30 mm; it is considered acceptable if there is no leakage within 24 hours, and this should be recorded. (3) Check the flatness of the floor surface, its color, and the uniformity of the seams. The surfaces of marble and granite slabs are clean, smooth, free of scratches, with clear patterns and uniform color. The joints are even, the edges are straight, the inlays are properly fitted, and the slabs have no defects such as cracks, chipped corners, or missing edges. Is there any bulging, cracking, or sanding of the overall floor surface? Is the distribution of the stones in the terrazzo floor even, are the dividing strips visible, and is the color consistent? The skirting boards should have a clean surface, be firmly attached, have consistent heights, and an equal thickness protruding from the wall; they should also match the style of the floor tiles. Additionally, check whether the entrance and exit areas on the exterior wall of the balcony are consistent. The sleeves installed in bathrooms and kitchens should have their tops 50 mm above the finished floor level. (4) Are the modular decorative materials and tile veneers pre-arranged or do they come with a decorative installation design before being fitted, and is the cleanliness of the wall surfaces as well as the uniformity of the joints excellent and precise? (5) Check the levelness and perpendicularity of door and window installation, as well as their inner and outer depths; assess the stability of the installation and whether the quality of the sealant meets the requirements for waterproofing and aesthetics; check for any signs of contamination; examine the tightness of the gaps around the doors and windows; verify that the small hardware components are properly installed; and assess the quality of the paint both visually and by touch. Additionally, check whether the division of the exterior windows conforms to the design specifications, and whether the materials used for assembling them meet the required standards (6) Has fireproof paint been applied to the surface of the fire door as required? (7) Are the door hinges properly selected and installed? Are plywood and fiberboard doors securely attached, and are the ventilation holes unobstructed? (8) Check whether the fabrication and installation of the woodwork are meticulous, whether the paint color is uniform, if there are any cracks or hollow areas, and whether the embossing is even (9) Does the arching and installation of the ceiling comply with the regulatory requirements? (10) Are the water baffle on the upper surface of the stair tread and the drip edge at the lower part of the tread in compliance with the regulations? 5. On the first floor, (1) Is the layout of the hallway or entrance area in compliance with the regulations? (2) Does the anti-theft railing on the exterior windows on the first floor meet the requirements? (3) Are the waterproofing methods for the canopies and the downspouts in compliance with regulations? (4) Is the fire seal between the first floor and the basement in compliance with the design requirements? 6. Basement: (1) Is the height of the basement in line with the design requirements? (2) Is proper insulation provided for the ceiling in unheated basements? (3) Are the openings around the pipes in the basement sealed as required? (4) Are anti-theft bars installed on the exterior windows of the basement? The diameter of these anti-theft bars should be no less than 10 mm, and the spacing between them should not exceed 110 mm. (5) Is there any leakage on the basement ceiling? (6) Does the installation of fire walls in the basement meet the design requirements?
7. Exterior finishes
(1) Check whether there are any cracks, tilting, or deformations in the main structure caused by quality issues related to the foundation and substructure. Also, check whether there is any settlement of the backfill soil around the foundation that has led to damage of the apron. Are the placement and construction of expansion joints and seismic joints reasonable?
(2) Examine the color, joint alignment, and flatness of the exterior wall finishes. Determine whether stone materials were installed using dry-hanging or wet-bonding techniques; look for signs of discoloration, efflorescence, or moisture infiltration. Check the horizontal and vertical alignment of interior and exterior walls, beams, slabs, columns, and decorative moldings. Assess the flatness of walls and ceilings; check for any cracks or warping in the ceilings, as well as whether openings are square and properly shaped.
(3) Verify whether the building’s energy-saving insulation measures (including at the plinth level) comply with relevant regulations.
(4) Are the expansion joints in outdoor stairways and aprons correctly positioned? Additionally, is there any sign of subsidence?
Regarding accessibility requirements for residential buildings: The height of thresholds at building entrances and the difference in elevation between the ground inside and outside the door should not exceed 15 mm; a ramp should be provided for smooth transition. (5) Is the dripping water line constructed correctly? Does the drainage slope meet the design requirements? The width and depth of the drip groove should both be no less than 10 mm. (6) Is the installation of exterior windows and the filling of gaps between window frames and walls with sealant done in a proper and adequate manner? According to fire safety requirements, the horizontal distance between the nearest edges of the windows in stairwells and those in suites should not be less than 1.0 m. (7) Are the construction methods for outdoor building energy conservation up to standard? Do the wall flatness and lines meet the requirements? Under conditions of proper use and regular maintenance, the service life of external wall thermal insulation systems should be no less than 25 years. When the building height exceeds 20 m, anchor bolts should be used to provide supplementary fixation at locations subjected to relatively high negative wind pressure. During the construction of external insulation works and within 24 hours after completion, the temperature of the substrate and the ambient air should not be lower than 5°C. Avoid exposure to sunlight in the summer. Construction is not permitted in conditions of winds above level 5 or during rainy days. The strict construction regulations for building energy-saving projects require that the thickness of insulation materials meet the design specifications. 8. Others: (1) Check the quality of installation of water, heating, gas, ventilation, and air conditioning pipes and fixtures; verify the flow direction of the fluids, as well as the labeling on the pipes. Ensure that the pipes are horizontal and vertical, that the supports are firmly fixed, that the hangers are straight, that the paint color is consistent, that everything is properly attached, that the labels are clear, and that the valves are installed correctly. The welds on the pipes should be sound, and the ventilation openings should fit tightly against the ceiling and walls. The fire sprinklers should be arranged neatly. Is the orientation of the fire hydrant nozzles correct? When the length of a radiator branch pipe exceeds 1.5 meters, pipe clamps should be installed on that branch pipe. In the inspection of building ventilation duct specifications, both air ducts and air channels are evaluated based on their outer diameter or outer dimension. Before the initial heating of a ground radiant heating system, the curing period for the concrete filling layer should not be less than 21 days. The sensors of the indoor temperature control device for low-temperature hot water floor radiant heating systems in buildings should be installed on the inner wall, away from direct sunlight and heat-generating equipment, at a height of 1.4 meters above the floor. The Technical Specifications for Ground Radiant Heating state that, in order to prevent excessive variations in the ground temperature distribution, the maximum spacing between heating pipes should not exceed 300 mm. (2) Check that the pipes and connections show no leaks, that the equipment is installed in an orderly manner in the correct positions, that the connections are secure, that the quality is excellent, that there are no safety hazards, that operation is smooth, and that the performance meets the design requirements. The insulation, heat insulation, corrosion protection of the pipes, as well as their thread and flange connections, all meet the technical standard requirements; furthermore, the accessories for PVC pipes are appropriate and comply with the standard specifications. (3) Check the quality of electrical wiring installation and device mounting, for any issues such as unclear connections, mixed usage of wires, or lack of grounding. Also verify whether the lightning protection facilities, distribution boxes, cable trays, and equipotential bonding meet the specified standards. (4) Check whether the elevator operates in accordance with the design requirements and can function properly; verify that the company that installed the elevator possesses the necessary qualifications, and that the labor department (or in some cases, the technical supervision bureau) has approved its operation. In physical construction, it is common to find that the leveling of some elevators is not consistent enough. Due to the uneven tracks of the elevator, it generates a lot of noise during operation and feels shaky. During the re-inspection, the civil engineering work in the top elevator shaft cannot be ignored either. 4. Completion acceptance documents (I) Acceptance of completion documents – Supervision documents: 1. Supervision plan; 2. Detailed supervision implementation rules; 3. Information on quality issues in the monthly supervision reports; 4. Information on quality issues in the minutes of supervision meetings; 5. Approval forms for project commencement/resumption; 6. Orders to suspend project commencement/resumption; 7. Notices regarding non-compliant items; 8. Reports on quality incidents and suggestions for handling them; 9. Opinions on the audit of the final project cost; 10. Reports on project delays and related approvals; 11. Reports on contract disputes and breaches, along with suggestions for resolution; 12. Documents related to contract changes; 13. Summary report on project supervision; 14. Preliminary quality assessment report for project completion. (II) Acceptance of completion documents – Construction documents 1. Civil engineering (1) Documents related to construction technical preparation, records of drawing reviews. (2) Materials for setting up the control network at the construction site along with the corresponding submission forms; materials for engineering positioning measurements along with the corresponding submission forms; materials for measuring the excavation lines for the foundation trench along with the corresponding submission forms. (3) Records of foundation treatment and corresponding submission forms: records of foundation augering and the plan layout for augering; records of trench inspection and foundation treatment records; records of pile construction; records of pile testing. (4) Records of changes to engineering drawings, records of design review meetings; records of design changes; records of project consultations. (5) Quality certification documents for construction materials and precast components, retest reports, and corresponding inspection forms for use upon arrival at the site: ① Test results for sand, stone, bricks, cement, steel bars, waterproof materials, insulation materials, anti-corrosion materials, and lightweight aggregates; summary tables of radiation tests for stones and floor tiles; ② Factory certification documents for sand, stone, bricks, cement, steel bars, waterproof materials, insulation materials, anti-corrosion materials, and lightweight aggregates; ③ Test results for sand, stone, bricks, cement, steel bars, waterproof materials, insulation materials, anti-corrosion materials, and lightweight aggregates, as well as retest reports for electrodes and asphalt, and radiation retest reports for stones and floor tiles, along with corresponding inspection forms for use upon arrival at the site; ④ Factory certificates of conformity for precast components (steel, concrete), test records, and corresponding inspection forms for use upon arrival at the site. (6) Test reports: ① Test report on the dry density of soil (plain soil, lime soil); ② Test report on the compaction of soil (plain soil, lime soil); ③ Test report on the compressive strength of mortar (test blocks); ④ Test report on the compressive strength of concrete (test blocks); ⑤ Test report on the water resistance of concrete; ⑥ Certificate of conformity and retest report for commercial concrete; ⑦ Test report on steel bar joints (welding); ⑧ Summary table of test reports for soil, mortar, concrete, steel bar connections, and concrete water resistance. (7) Inspection records for concealed works and corresponding submission forms: ① Reinforcement work for foundations and main structures; ② Steel structure work; ③ Waterproofing work; ④ Elevation control. (8) Construction records and corresponding inspection applications: ① Records of engineering positioning and surveying; ② Settlement monitoring records; ③ Records of structural lifting; ④ On-site construction prestress records; ⑤ Final engineering survey records; ⑥ New building materials; ⑦ New construction technologies. (9) Documents for evaluating project quality and corresponding submission forms; (10) Records of handling project quality incidents; (11) Project quality inspection records: ① Quality acceptance records for foundations and main structure; ② Acceptance records for curtain wall projects; ③ Quality acceptance records for individual sections (sub-sections) of the project. 2. Electrical systems, water supply and drainage systems, fire protection systems, heating systems, ventilation systems, air conditioning systems, gas systems, building automation systems, elevator projects: (1) Records of drawing changes: ① Drawing reviews; ② Design modifications; ③ Project consultations. (2) Inspection records of equipment and product quality, as well as corresponding inspection application forms: ① Certificates of conformity and quality assurance documents for equipment and products; ② Equipment installation records; ③ Equipment commissioning records; ④ Detailed lists of equipment. (3) Inspection records of concealed works and corresponding inspection application forms. (4) Construction test records and corresponding inspection application forms: ① Test records related to electrical grounding resistance, insulation resistance, structured cabling, cable TV endpoints, etc.; ② Commissioning records for building automation, monitoring, audio-visual systems, telephone systems, etc.; ③ Installation, inspection, power-up, and full-load testing records for power distribution and transformation equipment; ④ Test records regarding the strength, tightness of pipes in water supply and drainage, fire protection, heating, ventilation, air conditioning, gas systems, as well as tests for water filling, pressure testing, cleaning, air leakage detection, and ball testing for valves; ⑤ Commissioning and trial operation records for electrical lighting, power systems, water supply and drainage systems, fire protection systems, heating systems, ventilation systems, air conditioning systems, gas systems, etc.; ⑥ Test records for elevator grounding resistance and insulation resistance; trial operation records under no-load, partial-load, full-load, and overload conditions; tests for balancing, speed control, and noise reduction. (5) Records of quality accident handling; (6) Records of engineering quality inspection, as well as records of quality acceptance for individual sections (sub-sections) of the project. 3. Completion acceptance documents (1) Project completion summary: ① Project overview table; ② Project completion summary. (2) Completion acceptance records: ① Project quality completion acceptance records for the unit (sub-unit); ② Completion acceptance certificate; ③ Completion acceptance report; ④ Completion acceptance filing form (including documents confirming the acceptance of various specific aspects); ⑤ Project quality warranty letter. 4. Outdoor projects (1) Outdoor installation (water supply, rainwater, sewage, heating, gas, telecommunications, electricity, lighting, television, fire protection, etc.) – construction documents (including submission forms). (2) Outdoor architectural environment (architectural features, water features, roads, landscaping, etc.). 5. Process for the “completion” of construction projects (I) First, prepare the documents required for building inspection: 1. Fire safety inspection report 2. Completion drawings of the construction project 3. Planning layout of the construction project 4. Copy of the building permit 5. Copy of the land use permit 6. Topographic map related to planning and construction (copy of the building boundary lines) 7. Application form for planning inspection upon project completion (two copies) 8. Construction drawings of the project (one copy) (II) Application for completion inspection of residential buildings and municipal infrastructure projects (provided by the general affairs department of the local quality inspection station when submitting a completion application): 1. All tasks specified in the project design and contract have been completed. 2. The construction unit submits the “Project Completion Report”. 3. The supervision unit submits the “Project Quality Assessment Report”. 4. The survey and design unit submits the “Quality Inspection Report”. 5. There are complete technical archives, construction management documents, as well as test reports for the main building materials, components, and equipment used in the project. 6. There is a quality warranty letter signed by the construction unit. 7. The project complies with the acceptance requirements set by the planning, fire safety, and environmental protection authorities. 8. All issues identified by the project quality supervision agency that required rectification have been addressed. 9. A letter from the construction unit confirming that all taxes related to this project have been paid (as required by local regulations). (III) List of items to be transferred in the project completion archives 1. Documents from the Planning Commission ； 2. Land acquisition site map, planning map ； 3. Land expropriation documents, use permits ； 4. Construction Project Planning Permit ； 5. Construction land use planning permit ； 6. Geotechnical investigation report ； 7. Construction Project Contract ； 8. Construction Project Design Contract ； 9. Contract for Engineering Survey ； 10. Construction project construction permit ； 11. Certificate of approval for construction drawing review ； 12. Business license for corporate entities ； 13. Completion and Acceptance Filing Form ； 14. Design Document Inspection Report ； 15. Application Receipt for Quality Supervision ； 16. Contract for Entrusting Supervision of Construction Projects ； 17. Notice of Award ； 18. Opinions on fire safety inspection of construction projects ； 19. Construction Project Planning and Acceptance Certificate ； 20. Project Quality Assessment Report ； 21. Project completion acceptance report ； 22. Warranty Letter for the Quality of Building Construction Projects ； 23、As-built drawings ； 24. As-built topographic map ； 25. House area calculation report ； 26. Technical documents ； 27. Management documents (environmental protection, municipal affairs, landscaping). (IV) Documents and materials required to apply for the \"Record-Filing for Project Completion Acceptance\": 1. Quality supervision report (from the local quality supervision agency); 2. Project completion acceptance report (to be prepared by the applicant); 3. Project construction permit or start-up report (from the local urban construction bureau); 4. Review opinion on construction drawing design documents (from the local drawing review agency); 5. Comprehensive acceptance documents for the quality of the project components (to be prepared by the applicant), including: acceptance documents for the foundation and its treatment, records and test reports regarding the acceptance of the foundation and base structure, records and test reports regarding the acceptance of the main structure, the project completion assessment report signed by the construction unit, the project quality assessment report signed by the supervision unit, and the project quality assessment reports signed by the surveying and design units; 6. Data on quality evaluation and functional testing of building and municipal infrastructure projects (from testing agencies); 7. Approval documents or permits for use issued by departments such as planning, public security fire protection, environmental protection, archives, health and epidemic prevention, and labor protection. (For various departments) 8. Warranty letter for project quality signed by the construction unit (to be provided by the contractor). 9. “Quality Guarantee Letter” and “User Manual for Residential Buildings” for commercial residential properties (to be provided by the contractor). 10. “Construction Land Use Permit” and “Construction Project Planning Permit” (issued by the Land and Resources Bureau and the Planning Bureau). 11. Other documents required by laws and regulations (such as elevator operation permits, transformer operation permits, etc.). 12. Civil air defense-related documents (issued by the Civil Air Defense Office). 13. Final topographic map of the site (prepared by a surveying and mapping agency). 14. Double-clearance receipt form (issued by the Urban Construction Bureau)