Prefabricated PC House Construction

The construction of prefabricated PC houses mainly adopts the method of factory-prefabricated components and on-site assembly, achieving efficient construction through modular design.

I. Core Processes

1. Factory Prefabrication

   • The building is disassembled into independent modules (such as walls, floors, ceilings, water and electricity pipelines, etc.), and standardized production is completed on the factory assembly line. Some projects achieve full-house prefabrication, including interior decoration and water and electricity installation. For example, the China Construction Hailong Intelligent Construction Industrial Park in Shenzhen, Guangdong, can deliver 20,000 to 30,000 modules per year through automated final assembly and parallel operations, with a construction period more than 60% shorter than that of traditional buildings.
   • Prefabricated components use high-precision molds and concrete pouring techniques to ensure dimensional uniformity and structural strength, reducing on-site construction errors.

2. On-site Assembly

   • The prefabricated components are transported to the construction site by transport vehicles and lifted using equipment such as cranes. The assembly process is similar to 'building blocks'. Initial fixation is achieved through methods such as snap-fit designs with protrusions and recesses and nut tightening. Secondary grouting and steel mesh pouring techniques are used at the connections to enhance overall integrity.
   • For example, a South Korean construction team once completed the main structure assembly of a prefabricated house in 14 days, fixing the load-bearing structure with anchor bolts and integrating the prefabricated components with concrete pouring to ensure seismic performance.

II. Technical Advantages

• Quality Controllability: Factory production avoids problems such as exterior wall leakage and cracks caused by weather and manual operations in traditional construction, with component precision reaching the millimeter level.
• Efficiency Improvement: Taking the public housing project in Shenzhen, Guangdong, as an example, 6,028 concrete modules were assembled into five residential buildings nearly 100 meters high. The construction period was shortened from 2.5 - 3 years to 1 year, and the on-site labor force was reduced by about 50%.
• Environmental Performance: It reduces on-site wet operations (such as concrete pouring), lowers dust and noise pollution, and keeps the material waste rate within 5%.

III. Application Scenarios

Prefabricated PC houses have been widely used in fields such as residential buildings, office buildings, hotels, schools, and data centers, and have been exported to more than 20 countries and regions including Indonesia, Vietnam, the United Kingdom, and Australia. Their modular design supports flexible expansion. For example, data centers can quickly expand their capacity by stacking prefabricated modules to meet the needs of digital development.

This technology provides an efficient and sustainable solution for the construction industry through standardized and industrialized production models, especially suitable for projects with high requirements for construction period and quality.