Specification and Standard for Repair of Prefabricated Houses

The specification and standard for the repair of prefabricated houses cover aspects such as renovation targets, methods, leakage treatment, repair scope, special requirements, and procedural and financial management, as detailed below:

Renovation Targets and Scope
The renovation of prefabricated houses requires professional assessment and is targeted at houses with severe structural damage, dangerous or unstable load-bearing components. The renovation targets primarily include residents living in prefabricated houses in urban and rural areas, with priority given to special disadvantaged groups such as low-income families, entitled groups, and families with disabled members.

Renovation Methods and Standards
Renovation methods include demolition and reconstruction, repair and reinforcement, and relocation. Demolition and reconstruction are suitable for houses that are entirely dangerous and have no repair value; repair and reinforcement are for houses with local damage but whose main structures can still be utilized; relocation is for residents of dilapidated houses in unsuitable living areas. After renovation, houses must meet basic living needs and safety requirements, including structural safety, good lighting and ventilation, complete living facilities, and compliance with energy conservation, environmental protection, and green building standards.

Leakage Repair Standards
Adhere to the principles of adapting to local conditions, combining prevention and drainage, selecting materials reasonably, and implementing comprehensive treatment. The waterproofing level after repair should not be lower than the original design requirements. Before repair, a design plan should be formulated, and on-site inspections should be conducted to identify the location, status, and causes of leakage. Inspection methods include visual inspection, instrumental detection, and water spraying or ponding tests.

Scope and Standards of House Repair

1. Repair Scope: Covers the main structure of the house (foundation, walls, beams, slabs, columns, etc.), public areas (roof, floor, staircase, corridor, etc.), and public facilities and equipment (water, electricity, sanitation, heating facilities, as well as elevators, fire protection equipment, etc.).
2. Repair Standards:
   • Structural Repair: For issues such as foundation settlement, wall cracks, and damage to beams, slabs, and columns, professional measures such as grouting reinforcement and carbon fiber sheet bonding should be adopted to ensure structural safety.
   • Roof Repair: For waterproof layer leakage or roof tile damage, re-laying of waterproof membranes or replacement of tiles should be carried out to restore waterproofing performance.
   • Interior Decoration Repair: Repair or replace damaged floors, doors, windows, and decoration parts to maintain indoor cleanliness and aesthetics.
   • Equipment and Facility Repair: Regularly inspect and repair water, electricity, sanitation, and heating facilities to ensure normal operation; special equipment such as elevators and fire protection equipment should be inspected and maintained regularly according to regulations.

Special House Repair Requirements

1. Historical Buildings: Repair should comply with protection plans, maintaining the original style, structure, and decoration to preserve historical heritage.
2. Rural Houses: Repair should adhere to the principle of 'one household, one residence', not exceeding the area of the homestead and building regulations to ensure legality and compliance.

Repair Procedures and Financial Management

1. Repair Procedures: Include application and approval, construction and supervision, acceptance and filing, etc., to ensure the orderly conduct of repair activities.
2. Financial Management: Funding sources include house owners, housing sales units, and government subsidies. Funds should be used exclusively for their intended purposes and be subject to supervision to ensure reasonable use.