Factory-Prefabricated Integral House Design

Factory-prefabricated integral house design is a construction model that involves disassembling a building into independent modules, prefabricating them in a factory, and then transporting them to the site for assembly. The design requirements, module composition, advantages, and application scenarios are as follows:

Design Requirements: Factory-prefabricated integral house design must adhere to the logic of industrial product manufacturing, demanding extremely high precision. During the design phase, the building must be divided into standardized modules, with the positions of each steel bar, pipeline, and connection node clearly defined, and error control measured in millimeters. This meticulous design ensures high-precision processing of modules during factory assembly line production, reducing the need for on-site adjustments and laying the foundation for subsequent assembly quality.

Module Composition: Modular design encompasses the prefabrication of all building elements. Structural components such as ceilings, floors, and walls, as well as附属设施 (ancillary facilities, here referring to water and electricity pipelines, doors, and windows), are all assembled in the factory. Some special houses, such as space capsule starry sky rooms, can be entirely prefabricated, meaning the main body of the house, interior decoration, and equipment systems are integrated in the factory and then transported to the site as a whole, requiring only simple connections to be put into use, significantly shortening the on-site construction period.

Advantages:

• Short Construction Period: Modular production and on-site construction proceed simultaneously, shortening the construction period by more than 60% compared to traditional buildings. For example, the Guangdong Shenzhen affordable housing project used 6,028 concrete modules for assembly, reducing the completion time from 2.5-3 years to just 1 year.
• Controllable Quality: Each module is equipped with a unique identification 'ID card' that records project name, model, production date, and other information, enabling full lifecycle quality traceability. The standardized factory production environment avoids the impact of weather and labor factors on construction quality.
• Energy Efficiency and Environmental Protection: By optimizing material usage and reducing on-site wet operations, construction waste is reduced by more than 70%. Regions such as Fujian Province have established industrial bases through policy guidance to promote the coordinated development of modular buildings and green building materials.
• Easy Maintenance: Modular design supports partial replacement or upgrading, allowing repairs without damaging the overall structure and reducing later operation and maintenance costs.

Application Scenarios: This technology is widely applicable in residential, commercial, and temporary building sectors. In residential construction, the Shenzhen affordable housing project achieved rapid delivery through modular assembly. In the commercial sector, expandable container houses meet the needs of exhibitions and emergency scenarios through modular combinations. Temporary buildings such as construction site dormitories and medical field hospitals achieve rapid deployment and recycling through integral prefabrication.