Latest Standards for Prefabricated Housing Finished Products

The standards for prefabricated housing finished products vary depending on the type. Here are the latest standards for some major types:

Standards for Prefabricated Cement Houses

1. Building Material Standards: Cement must comply with the requirements of GB 175-2007 'General Purpose Portland Cement' to ensure that its strength, soundness, and other properties meet the standards. Steel bars should conform to the provisions of GB/T 1499.2-2018 'Steel for the Reinforcement of Concrete - Part 2: Hot-Rolled Ribbed Bars' to ensure that their mechanical properties and chemical composition are up to standard. Aggregates should meet the requirements of GB/T 14684-2011 'Sand for Construction' and GB/T 14685-2011 'Pebble and Crushed Stone for Construction', controlling indicators such as the particle size distribution and mud content of sand and gravel.
2. Structural Design Standards: It is necessary to follow GB 50010-2010 'Code for Design of Concrete Structures' and GB 50009-2012 'Load Code for the Design of Building Structures' to ensure the safety and stability of the house structure under various loads.
3. Construction Process Standards: They should comply with GB 50666-2011 'Code for Construction of Concrete Structures' and JGJ 1-2014 'Technical Specification for Prefabricated Concrete Structures' to standardize construction links such as concrete pouring and the installation of prefabricated components.
4. Acceptance Specifications: Acceptance should be carried out in accordance with GB 50204-2015 'Code for Acceptance of Constructional Quality of Concrete Structures', conducting strict inspections on items such as the concrete strength and the position of steel bars in the house.

Standards for Prefabricated Concrete Structure Buildings (Draft for Solicitation of Comments)

The main technical content includes general provisions, terms and symbols, basic requirements, integrated building design, structural design, interior decoration design, exterior enclosure design, production of components and parts, construction and installation, and acceptance, covering the entire process of prefabricated concrete structure buildings from design to acceptance.

Standards for Cement Prefabricated Houses for Rural Self-Built Houses

1. Foundation and Subgrade: The foundation must have sufficient bearing capacity. The buried depth of the foundation should take into account factors such as geological conditions, groundwater level, and frost depth to ensure the stability of the house foundation.
2. Main Structure: The structural design should be reasonable. The size, reinforcement, and connection methods of structural components should meet seismic fortification requirements and relevant specifications to improve the seismic performance of the house.
3. Material Use: Materials such as cement, sand and gravel, and steel bars should comply with relevant national standards and design requirements to ensure reliable material quality.
4. Construction Specifications: Construction should follow a reasonable process, including foundation treatment, foundation construction, installation of prefabricated components, roofing, and waterproofing works, to ensure construction quality.
5. Acceptance Standards: After the completion of the house, a comprehensive quality acceptance should be carried out, including aspects such as structural safety and usability, to ensure that the house can be used safely.