Hazard Factors of Prefabricated Houses Include

The hazard factors of prefabricated houses mainly include the following aspects:

I. Structural Safety Hazards
Prefabricated houses often adopt a design of spliced panels, which presents issues of low structural strength and poor seismic performance. The loose proportioning of hollow panels and steel bars makes them prone to collapse during natural disasters such as earthquakes. As the house ages, uneven settlement of the wall foundation can lead to cracking at the joints of the prefabricated panels. In severe cases, panel misalignment, detachment, or even partial collapse may occur. If residents privately modify the walls or damage the ring beams, it will further weaken the overall load-bearing structure and increase safety risks.

II. Service Life Issues
The designed service life of prefabricated houses is typically 30-50 years, but in actual use, due to factors such as material aging and process defects, issues such as structural fragility, increased cracks, and aggravated water leakage often emerge around 30 years. If improper materials are selected or the process is substandard during production, the house may age prematurely, shortening its service life.

III. Wall Cracks and Water Leakage
Wall cracks and water leakage are common problems in prefabricated houses, especially during the rainy season or heavy rainfall. If cracks are not repaired in a timely manner, they not only affect aesthetics but also weaken structural stability, posing a risk of collapse. Water leakage can cause water to seep into the walls and floors, corroding the internal structure and becoming a potential safety threat.

IV. Poor Thermal Insulation and Sound Insulation Performance
Prefabricated houses have weak thermal insulation performance, being cold in winter and hot in summer, and are unable to withstand extreme weather conditions. The sound insulation effect is also poor, with daily noises from neighbors likely to be clearly heard, affecting living comfort.

V. Difficulty in Internal Structure Adjustment
Unlike modern commercial housing, the walls of prefabricated houses mostly bear load-bearing functions, and large-scale modifications are restricted. Residents find it difficult to customize their living space according to their needs, resulting in low flexibility.

VI. Water Seepage Risk
Over time, cement components are prone to cracking, and the gaps between components increase, leading to an increased risk of water seepage between floors, which may trigger neighborhood disputes.

VII. Pipeline Aging Issues
In early prefabricated houses, water and electricity pipelines were often directly laid in the gaps between floor slabs or within walls without proper pipe protection. After more than 30 years of use, the insulation layer of the wires may age and crack, easily causing short circuits and electric leakage. If gas pipelines are attached to the walls, they may be pulled due to wall deformation, leading to gas leakage.

VIII. Quality Hazards in Production and Installation
If there are violations during the production, sales, or installation of prefabricated houses, such as the use of substandard materials or construction not in accordance with design requirements, it may result in the house having insufficient load-bearing capacity and posing structural safety hazards.