Employee Prefabricated Housing

Employee prefabricated housing is a construction method that involves breaking down a building into independent modules, prefabricating them in a factory, and then transporting them to the site for assembly. The following provides a detailed introduction from multiple aspects:

Construction Method: The building is divided into independent modules such as wall panels, floor slabs, and stairs, which are manufactured in a factory and then transported to the construction site for assembly. For example, at a construction site in Qixian, Henan, a crane precisely hoisted a 30-ton concrete module, completing the main installation of a three-story villa with an area of 200 square meters in just 4 hours.

Construction Speed: The construction period is significantly shortened, with a reduction of over 60% compared to traditional construction. In Henan, it takes only 4 hours to hoist a complete house, and a 100-square-meter house can be ready for occupancy in just 5 days from a bare site. In a public housing project in Shenzhen, Guangdong, five residential buildings nearly 100 meters high were assembled from 6,028 concrete modules, with the completion and delivery period reduced from 2.5 to 3 years to just 1 year.

Cost: The cost is relatively low. In Henan, the cost per square meter is just over 300 yuan, with the rough construction cost of a 200-square-meter house being approximately 60,000 yuan, and even a large villa can be built with a budget of just over a hundred thousand yuan. The labor cost for a 100-square-meter house is reduced by 60% compared to traditional construction.

Quality and Lifespan: The main structure of the house is made of reinforced concrete, making it sturdy and reliable. The quality guarantee period for prefabricated houses in Henan is as long as 70 years. Prefabricated concrete houses adopt a full-frame shear wall structure, using C35 concrete and Φ14 threaded steel bars, with a reinforcement ratio of 1.2% per module. The wall thickness is 200mm, and the compressive strength reaches 30MPa, equivalent to being able to withstand 3,000 tons per square meter. The modules are connected using prestressed bolts (with a tensile strength of 25 tons) and traditional Chinese architectural mortise-and-tenon joints. In a simulated Wenchuan earthquake test, the overall displacement was only 3cm under a seismic intensity of 9 degrees.

Environmental Protection and Energy Efficiency: The construction process is environmentally friendly and energy-efficient, with the ability to be reused and high flexibility. Compared to traditional construction, prefabricated concrete houses significantly reduce construction waste, with a 98% reduction in waste for a 100-square-meter house. The walls are embedded with EPS insulation layers, saving 50% on heating costs in winter. The roof is预留 (reserved) with interfaces for photovoltaic panels, and a 200-square-meter house can generate up to 3,000 kWh of electricity per year, meeting household electricity needs.

Applicable Scenarios: It has a wide range of applicability, suitable for cozy residences, practical dormitories, and neat office buildings alike.