What Does Prefabricated House Mean

Prefabricated houses, also known as prefabricated assembled buildings or modular buildings, refer to a form of construction where building components are industrially produced and assembled on-site. Specifically, its core lies in disassembling the building into independent modules, which are manufactured in a factory and then transported to the construction site for assembly, covering the entire process of prefabrication from the structure to the internal systems. The following explains from three aspects: definition, production process, and common types.

1. Core Definition and Industrial Characteristics

The essence of prefabricated houses is the combination of building industrialization and modular design. Traditional buildings require all construction processes to be completed on-site, while prefabricated houses break down the building into standardized independent modules (such as walls, floors, stairs, etc.). Each module is produced on an assembly line in the factory, including structural frames, water and electricity pipelines, insulation layers, and even interior decoration. This production method significantly improves construction efficiency and reduces the complexity and uncertainty of on-site operations. For example, the factory can produce multiple modules simultaneously, while only precise对接 (docking, here it means connection) between modules is required on-site, shortening the construction period by 30%-50%.

2. Standardized Production and On-site Assembly Process

The production process of prefabricated houses is divided into two stages: factory prefabrication and on-site assembly. In the factory stage, modules are formed using high-precision molds to ensure dimensional uniformity and structural stability. Taking ceiling modules as an example, their interiors may be pre-embedded with lighting circuits, ventilation ducts, and even ceiling decorations, possessing complete functionality upon leaving the factory. After being transported to the site, construction personnel use lifting equipment to拼接 (splice, here it means assemble) the modules according to the design drawings, fixing them through bolts, welding, or buckles to ultimately form a complete building. This process is similar to 'building blocks', but it must strictly adhere to building mechanics and safety regulations to ensure the overall structure's earthquake and wind resistance.

3. Diverse Common Types

Prefabricated houses come in a variety of types to suit different scenarios:

• Panel-assembled: Using prefabricated wall panels and floors as the main body, with on-site pouring to connect the nodes, commonly used in multi-story residential buildings;
• Box-assembled: Prefabricating entire rooms (such as bedrooms, kitchens) as independent modules and stacking them directly for assembly, suitable for hotels and apartments;
• Modular housing: Emphasizing the flexible combination of modules, which can be expanded or disassembled, often used for temporary housing or post-disaster reconstruction;
• Container houses: Utilizing standard shipping containers for modification, featuring strong mobility and low cost, mostly used for construction site dormitories or commercial exhibition halls;
• Wood-framed prefabricated houses: Using wood as the frame, with walls and roofs prefabricated in the factory, suitable for low-rise villas or vacation homes.

Prefabricated houses reduce reliance on manual labor through industrial production, decrease construction waste and noise pollution, and align with the trend of green buildings. With technological advancements, their application scope is expanding from temporary buildings to permanent residences and commercial complexes.