Standard Specifications for Prefabricated Housing
The standard specifications for prefabricated housing cover aspects such as foundations and bases, main structures, material usage, construction specifications, acceptance criteria, and other related areas, as detailed below:
Foundations and Bases: The foundation must possess sufficient load-bearing capacity, with reinforcement measures such as pile foundations or soil replacement layers implemented based on geological conditions. The depth of foundation embedding should consider factors such as geology, groundwater levels, and permafrost depth to ensure stability. In terms of materials, cement, steel bars, etc., must comply with relevant national standards and design requirements to guarantee strength and durability.
Main Structures: Structural design should be reasonable, with the dimensions, reinforcement, and connection methods of structural components (such as beams, columns, and walls) meeting seismic fortification requirements and relevant specifications. The production of prefabricated components must adhere to standards to ensure dimensional accuracy, strength, and durability, with connections between components being secure and reliable to meet structural safety requirements.
Material Usage: Cement should be a quality-certified product, with its strength grade, soundness, and other indicators meeting national standards. Other materials such as sand, gravel, and steel bars should also comply with relevant national standards and design requirements. The use of flammable or combustible foam sandwich panels is strictly prohibited in crowded places; instead, non-combustible or difficult-to-ignite materials such as rock wool should be used to ensure fire safety.
Construction Specifications: The construction process should be reasonable, including foundation treatment, foundation construction, installation of prefabricated components, roofing, and waterproofing works. Attention should be paid to construction details, such as the splicing of prefabricated components and the laying of waterproof layers, to ensure that construction quality meets design requirements and relevant specifications. Construction should preferably be organized by professional construction teams or trained rural individual builders with housing construction capabilities, and a construction organization design and construction plan should be formulated.
Acceptance Criteria: After the completion of the house, a comprehensive quality inspection should be conducted, covering aspects such as structural safety and functionality. Quality testing should be carried out when necessary to verify whether the construction quality meets requirements.
Other Specifications: If prefabricated panel houses use flammable materials, they must strictly comply with fire safety regulations. Construction should conform to local land use plans and relevant laws and regulations, with applications for land use rights and building permits submitted before construction. Prefabricated rural houses should respect farmers' housing needs, with architectural styles reflecting regional characteristics and appropriate consideration given to aging-friendly design.
