Prefabricated House Quality Inspection Report

The prefabricated house quality inspection report typically includes core content such as house overview, inspection content and methods, inspection results, existing problems, and recommendations, as detailed below:

House Overview: This covers basic information such as the house's location, floor area, building structure, year of construction, number of floors, wall material, and roof type, providing background support for subsequent inspections. For example, clarifying whether the house is a prefabricated panel structure helps in conducting targeted inspections for issues like panel joint cracking and support loosening.

Inspection Content and Methods:

1. Structural Safety: Focus on inspecting cracks and deformations in load-bearing components (beams, columns, floor slabs), recording data using crack width gauges and laser leveling tools. For prefabricated panel houses, inspections for panel joint cracking, support loosening, and steel bar corrosion should be conducted in accordance with the 'General Code for Appraisal and Strengthening of Existing Buildings'.
2. Walls and Foundation: Inspect issues such as wall cracking, water seepage, and peeling, and analyze foundation settlement and uneven settlement in conjunction with geological reports. For example, approximately 23% of prefabricated panel houses built before 1980 in the Chengdu area have defects where the panel end support length is less than 120mm, requiring classification as hazardous points according to the 'Standard for Appraisal of Dangerous Houses'.
3. Waterproof Performance: Conduct integrity and leakage inspections of waterproof layers on roofs, bathrooms, balconies, and other areas, using infrared thermal imaging cameras and water pressure tests for auxiliary confirmation.
4. Electrical System: Inspect whether distribution boxes, leakage protection devices, and lighting circuits comply with safety standards.
5. Water Supply and Drainage System: Check the rationality of pipeline layout, leakage and blockage issues, and test water pressure and drainage smoothness.
6. Indoor Environment: Sample and test for harmful gas content such as formaldehyde and benzene to ensure compliance with national residential environment standards.

Inspection Results: It is necessary to specify whether structural safety, walls and foundation, waterproof performance, electrical system, water supply and drainage system, and indoor environment meet standards on an item-by-item basis. For example, in structural safety, the floor slab flatness complies with regulations, and beams and columns have no cracks or corrosion; in waterproof performance, the roof and bathroom waterproof layers are intact with no leakage.

Existing Problems and Recommendations: Propose improvement measures for issues such as fine cracks and wall peeling discovered during inspections. For example, it is recommended to regularly re-inspect crack widths and undertake structural reinforcement if they exceed standards; enhance ventilation during renovation to prevent wall peeling; and regularly maintain waterproof layers.

In addition, the appraisal of house danger must comprehensively consider the foundation, foundation, superstructure, and hazardous components, and classify them into four levels according to the 'Standard for Appraisal of Dangerous Houses': A (safe), B (individual hazardous components), C (local danger), and D (overall danger). The appraisal report must be stamped with the CMA certification mark and the practice seal of a registered structural engineer to be legally valid.