Is Prefabricated Housing Reliable?
The reliability of prefabricated housing cannot be generalized; it needs to be discussed on a case-by-case basis. There are both older types with lower reliability and newer products with higher reliability.
Low Reliability of Old Prefabricated Panel Houses
The prefabricated panel houses that were once popular across the country have serious reliability issues. In terms of earthquake resistance, their earthquake-resistant capacity is almost zero. When an earthquake occurs, the structure of such houses cannot withstand the impact of seismic waves and will directly collapse, posing a great threat to the lives of the occupants.
Regarding structural connections, the connection points of prefabricated panel houses are extremely fragile, belonging to a structure that 'falls apart at the slightest touch'. This type of structure is prone to connection breakage and overall structural instability when subjected to external forces such as strong winds or collisions.
In terms of materials, the phenomenon of cutting corners is relatively common in old prefabricated panel houses. The materials used are brittle and prone to breakage. Some unscrupulous manufacturers reduce the amount of key materials such as steel bars or use substandard concrete to cut costs, resulting in the inability to guarantee the strength and durability of the houses. Based on these numerous problems, the country is gradually phasing out such prefabricated panel houses.
High Reliability of New Prefabricated Houses
The new prefabricated houses that have emerged today, such as the cement 'prefabricated houses' in Henan, have high reliability. Their prefabricated components are manufactured in factories through precise calculations and mold forming, ensuring the dimensional accuracy and quality stability of the components.
The main body of the house adopts a reinforced concrete structure, which has high strength and good earthquake resistance, effectively withstanding the damage caused by natural disasters such as earthquakes. In terms of construction speed, new prefabricated houses adopt a factory-based production and on-site assembly method, greatly shortening the construction cycle and improving construction efficiency.
At the same time, new prefabricated houses also have the characteristics of environmental protection, energy efficiency, reusability, and high flexibility. Their costs are relatively low, and the house lifespan can reach 70 years, with a quality guarantee period also as long as 70 years. They have a wide range of applicability and can be used for various building types such as residences, dormitories, and office buildings.
